 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| sicofi ? 2-c two channel codec filter with pcm and microcontroller interface peb 2266 version 2.2 pef 2266 version 2.2 hardware reference manual, ds 1, feb. 2001 wired communications never stop thinking.
edition 2001-02-20 published by infineon technologies ag, st.-martin-strasse 53, d-81541 mnchen, germany ? infineon technologies ag 2001. all rights reserved. attention please! the information herein is given to describe certain components and shall not be considered as warranted characteristics. terms of delivery and rights to technical change reserved. we hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and charts stated herein. infineon technologies is an approved cecc manufacturer. information for further information on technology, delivery terms and conditions and prices please contact your nearest infineon technologies office in germany or our infineon technologies representatives worldwide (see address list). warnings due to technical requirements components may contain dangerous substances. for information on the types in question please contact your nearest infineon technologies office. infineon technologies components may only be used in life-support devices or systems with the express written approval of infineon technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect the safety or effectiveness of that device or system. life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. if they fail, it is reasonable to assume that the health of the user or other persons may be endangered. wired communications sicofi ? 2-c two channel codec filter with pcm and microcontroller interface peb 2266 version 2.2 pef 2266 version 2.2 hardware reference manual, ds 1, feb. 2001 never stop thinking. for questions on technology, delivery and prices please contact the infineon technologies offices in germany or the infineon technologies companies and representatives worldwide: see our webpage at http://www.infineon.com abm ? , aop ? , arcofi ? , arcofi ? -ba, arcofi ? -sp, digitape ? , epic ? -1, epic ? -s, elic ? , falc ? 54, falc ? 56, falc ? -e1, falc ? -lh, idec ? , iom ? , iom ? -1, iom ? -2, ipat ? -2, isac ? -p, isac ? -s, isac ? -s te, isac ? -p te, itac ? , iwe ? , musac ? -a, octat ? -p, quat ? -s, sicat ? , sicofi ? , sicofi ? -2, sicofi ? -4, sicofi ? -4 c, slicofi ? are registered trademarks of infineon technologies ag. ace?, asm?, asp?, potswire?, quadfalc?, scout? are trademarks of infineon technologies ag. peb 2266 pef 2266 revision history: current version 2001-02-20 ds 1 previous version: data sheet 07.97 ds1 (v 1.1) delta sheet 11.98 ds2 (v 1.4) errata sheet 05.98 ds1 (v 1.4) page subjects (major changes since last revision) peb 2266 pef 2266 table of contents page hardware reference manual 2001-02-20 preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 1 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 1.1 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1.2 logic symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 1.3 typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2 pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2.1 pin diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2.2 pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 3 functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 3.1 dsp-based architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 3.2 programming and control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 4 operational description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 4.1 operating states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 4.1.1 power on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 4.1.2 hardware reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 4.2 transmission characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 4.2.1 overload point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 4.2.2 0 dbm0-levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 4.2.3 compressor gain relative to coding law . . . . . . . . . . . . . . . . . . . . . . . .15 4.2.4 operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 4.2.5 gain accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 4.2.6 gain tracking (receive and transmit) . . . . . . . . . . . . . . . . . . . . . . . . . .17 4.2.7 frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 4.2.8 group delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 4.2.8.1 group delay, absolute values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 4.2.8.2 group delay distortion with frequency . . . . . . . . . . . . . . . . . . . . . . . .19 4.2.9 noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 4.2.10 harmonic and intermodulation distortion . . . . . . . . . . . . . . . . . . . . . . . .20 4.2.11 total distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 4.2.12 single frequency distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 4.2.13 overload compression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 4.2.14 crosstalk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 4.2.15 out-of-band discrimination in transmit direction . . . . . . . . . . . . . . . . . .23 4.2.16 out-of-band discrimination in receive direction . . . . . . . . . . . . . . . . . . .24 4.2.17 out-of-band idle channel noise at analog output . . . . . . . . . . . . . . . . .25 4.2.18 transhybrid loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 5 interface description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 5.1 analog interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 5.1.1 coupling capacitors at the analog interface . . . . . . . . . . . . . . . . . . . . . .27 peb 2266 pef 2266 table of contents page hardware reference manual 2001-02-20 5.1.2 analog interface pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 5.2 pcm interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 5.2.1 pcm interface pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 5.2.2 pcm receive and transmit example . . . . . . . . . . . . . . . . . . . . . . . . . . .30 5.3 signaling interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 5.3.1 signaling interface pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 5.3.2 debouncing functions and interrupt generation . . . . . . . . . . . . . . . . . . .33 5.3.3 clock output signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 5.4 serial microcontroller interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 5.4.1 serial microcontroller interface pins . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 5.4.2 write access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 5.4.3 read access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 5.4.4 three-wire access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 6 programming overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37 6.1 programming overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37 6.1.1 register model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37 6.1.2 register maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 6.1.3 cram structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39 6.2 types of commands and data bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 7 application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 7.1 support tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 7.1.1 development board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 7.2 guidelines for board design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42 7.2.1 filter capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42 7.3 proposal for sicofi ? 2-c board design . . . . . . . . . . . . . . . . . . . . . . . . . .43 8 electrical characteristics and timing diagrams . . . . . . . . . . . . . . . . . .44 8.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44 8.2 operating range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45 8.3 digital interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45 8.4.1 coupling capacitors at the analog interface . . . . . . . . . . . . . . . . . . . . . .46 8.5 reset timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46 8.4 analog interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46 8.6 pcm-interface timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47 8.6.1 single clocking mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47 8.6.2 double clocking mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48 8.7 microcontroller interface timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49 8.8 signaling interface timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 8.8.1 timing from the c interface to the so/sb-pins . . . . . . . . . . . . . . . . . . .50 8.8.2 timing from the si/sb-pins to the c interface . . . . . . . . . . . . . . . . . . . .50 peb 2266 pef 2266 table of contents page hardware reference manual 2001-02-20 9 test modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51 9.1 analog loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51 9.2 digital loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 9.3 cut-off ? s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53 10 package outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54 11 glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55 index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 peb 2266 pef 2266 list of figures page hardware reference manual 2001-02-20 figure 1 sicofi ? 2-c architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 figure 2 sicofi ? 2-c logic symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 figure 3 pin configuration of sicofi ? 2-c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 figure 4 sicofi ? 2-c block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 figure 5 sicofi ? 2-c state diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 figure 6 analog and pcm signal levels in a-law mode . . . . . . . . . . . . . . . . . .15 figure 7 analog and pcm signal levels in -law mode . . . . . . . . . . . . . . . . . . .15 figure 8 simplified signal flow diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 figure 9 total distortion measured with sine-wave, receive and transmit . . . .20 figure 10 total distortion receive (noise) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 figure 11 total distortion transmit (noise) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 figure 12 overload compression (-law coding, transmit direction) . . . . . . . . .22 figure 13 out-of-band discrimination in transmit direction . . . . . . . . . . . . . . . . .23 figure 14 analog output: out-of-band signals . . . . . . . . . . . . . . . . . . . . . . . . . . .24 figure 15 analog output: out-of-band idle channel noise . . . . . . . . . . . . . . . . . .25 figure 16 analog interface to two subscriber line interface circuits (slics) . . .28 figure 17 pcm interface example: location of time slots . . . . . . . . . . . . . . . . . .31 figure 18 pcm interface example: detail a . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 figure 19 signaling example: two subscriber lines. . . . . . . . . . . . . . . . . . . . . . .32 figure 20 serial microcontroller interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 figure 21 example for a two-byte write access. . . . . . . . . . . . . . . . . . . . . . . . . .35 figure 22 example for a one-byte read access . . . . . . . . . . . . . . . . . . . . . . . . .35 figure 23 example for a read access with byte-by-byte transfer . . . . . . . . . . . .36 figure 24 bi-directional data signal: din and dout strapped together. . . . . . .36 figure 25 channel-specific and common coefficients . . . . . . . . . . . . . . . . . . . . .39 figure 26 development system with stut 2466 evaluation board . . . . . . . . . . .41 figure 27 sicofi ? 2-c test circuit configuration . . . . . . . . . . . . . . . . . . . . . . . .42 figure 28 proposal for a ground concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 figure 29 pcm interface timing in single clocking mode. . . . . . . . . . . . . . . . . . .47 figure 30 pcm interface timing in double clocking mode . . . . . . . . . . . . . . . . . .48 figure 31 timing of the microcontroller interface. . . . . . . . . . . . . . . . . . . . . . . . . .49 figure 32 signaling output timing (data downstream) . . . . . . . . . . . . . . . . . . . . .50 figure 33 analog loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51 figure 34 digital loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 figure 35 cut-off ? s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53 peb 2266 pef 2266 list of tables page hardware reference manual 2001-02-20 table 1 pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 table 2 register values and accessibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 table 3 input and output pin behavior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 table 4 power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 table 5 maximum signal levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 table 6 analog voltage levels corresponding to 0 dbm0-level . . . . . . . . . . . 14 table 7 gain accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 table 8 gain deviations with input level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 table 9 attenuation with frequency in transmit and receive direction. . . . . . 18 table 10 group delay, absolute values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 table 11 group delay distortion with frequency . . . . . . . . . . . . . . . . . . . . . . . . 19 table 12 idle channel noise in transmit direction. . . . . . . . . . . . . . . . . . . . . . . 19 table 13 idle channel noise in receive direction . . . . . . . . . . . . . . . . . . . . . . . 19 table 14 harmonic and intermodulation distortion. . . . . . . . . . . . . . . . . . . . . . . 20 table 15 signal-to-total distortion ratio measured with sine wave . . . . . . . . . 20 table 16 signal-to-total distortion ratio measured with noise . . . . . . . . . . . . . 21 table 17 crosstalk between channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 table 18 out-of-band signals applied to the analog inputs (vinx) . . . . . . . . . . 23 table 19 out-of-band signals at the analog outputs (voutx) . . . . . . . . . . . . . 24 table 20 transhybrid loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 table 21 analog interface pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 table 22 pcm interface pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 table 23 pcm register configuration example . . . . . . . . . . . . . . . . . . . . . . . . . 30 table 24 signaling interface: pins and functions for slic interfaces . . . . . . . . 33 table 25 clock programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 table 26 serial microcontroller interface: pins and functions . . . . . . . . . . . . . . 34 table 27 register model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 table 28 read access to common configuration register (xr) map . . . . . . . . 38 table 29 write access to common configuration register (xr) map . . . . . . . . 38 table 30 channel-specific configuration register (cr) map (read & write) . . 38 table 31 coefficient ram (cram) structure per channel . . . . . . . . . . . . . . . . . 39 table 32 coefficient ram (cram) structure per set . . . . . . . . . . . . . . . . . . . . . 40 table 33 types of commands and data bytes. . . . . . . . . . . . . . . . . . . . . . . . . . 40 table 34 analog loop programming in register cr3, bits 7 to 4 . . . . . . . . . . . 51 table 35 digital loop programming in register cr3, bits 7 to 4 . . . . . . . . . . . . 52 table 36 cut-off programming in register cr2, bits 7 to 5. . . . . . . . . . . . . . . . 53 peb 2266 pef 2266 hardware reference manual 1 2001-02-20 preface this document provides detailed technical information about the sicofi ? 2-c. it is intended for anyone considering or using the device for system design or board layout for a broad range of analog telephony applications. all content applies to both the standard peb 2266 and the extended temperature version, pef 2266, unless specified. organization of this document this hardware reference manual is organized as follows: chapter 1, overview includes a general description of the architecture, feature list, and logic symbol. chapter 2, pin descriptions illustrates the pin configuration and provides detailed functional descriptions. chapter 3, functional description provides a block diagram and summarizes the major functional blocks. chapter 4, operational description begins with a state diagram and description of the operating states of all two channels and concludes with detailed transmission characteristics. chapter 5, interface descriptions describes the analog, pcm, signaling, and serial microcontroller interfaces. chapter 6, programming overview illustrates the register model and coefficient ram structure, provides a register map and summary, and identifies the programming command sequences. chapter 7, application hints describes the development system available for the peb 2266, and provides guidelines and schematics for board layout. chapter 8, electrical characteristics and timing diagrams provides detailed tables for the electrical characteristics and includes timing diagrams for the analog, pcm, serial microcontroller, and signaling interfaces. chapter 9, test configuration describes the test loops and cut-offs available for functional tests and diagnostics. chapter 10, package outlines illustrates the p-mqfp-64 package in which the peb 2266 is manufactured. the appendix includes a glossary and an index. related documentation other documentation for the peb 2266 includes a product brief , a product overview , a programmer?s reference manual , and assorted application notes . similar documentation is also available for the other members of the sicofi codec family including the psb 2132, psb 2134, and peb 2466. documentation is available by accessing our website: http://www.infineon.com/sicofi peb 2266 pef 2266 overview hardware reference manual 2 2001-02-20 1 overview the two-channel codec filter peb 2266 sicofi ? 2-c is built around a central dsp-core which provides independent filter structures for all channels. its analog i/o pins are used to connect to external subscriber line interface circuits (slics). their signals are internally routed to the analog-to-digital and digital-to-analog converters (adc, dac). the signaling pins carry line status and control information to and from the slics. two programmable clock outputs are available. the sicofi ? 2-c connects to the digital switching and transmission system through two pcm highways. the digitized voice band signals are available as a-law or -law codes within selectable 8-bit time slots. the sicofi ? 2-c modes, features, and filter characteristics are programmed through a serial interface to a microcontroller. the access mechanism is very simple, and can be implemented with as few as three i/o ports. the peb 2266 is available for standard temperature range applications (0 c to +70 c); the pef 2266 is available for extended temperature range applications (-40 c to +85 c). figure 1 sicofi ? 2-c architecture slic 1 adc - dac signaling slic 2 adc - dac signaling highway a highway b status and control registers cram pll, clocking serial microcontroller interface t/r t/r peb 2266 sicofi2-c digital filters channel 1 digital filters channel 2 dsp core pcm interface 2266_201 p-mqfp-64 hardware reference manual 3 2001-02-20 two channel codec filter with pcm and microcontroller interface sicofi ? 2-c peb 2266 pef 2266 version 2.2 cmos type package peb 2266 version 2.2 p-mqfp-64 pef 2266 version 2.2 p-mqfp-64 1.1 features two-channel single chip codec with digital filters high analog driving capability (300 ? , 50 pf) for direct driving of transformers digital signal processing (dsp) technique programmable digital filters to adapt transmission behavior, especially for: ? ac impedance matching ? transhybrid balancing ? frequency response ? signal levels ? a/-law compression and expansion fulfills international (e.g. itu-t q.552, g.712) and country-specific requirements high performance adc and dac for excellent linearity and dynamic gain programmable analog interface to electronic slics or transformer solutions seven slic-signaling i/o pins per channel with programmable debouncing two pcm highways accessible by on-chip pcm interface with programmable time slot assignment and variable data rates from 128 kbit/s to 8 mbit/s easy to use 4-pin serial microcontroller interface (spi compatible) for read/write access single supply voltage (5 v) advanced low-power mixed-signal cmos technology two programmable tone generators (dtmf possible) level metering function for system tests and for analog input signal testing advanced on-chip functions for device and system diagnostics and manufacturing test ? five digital loops ? four analog loops support tools include: ? hardware development board ? stut 2466 ? qsicos coefficient calculation and register configuration software standard p-mqfp-64 package peb 2266 pef 2266 overview hardware reference manual 4 2001-02-20 1.2 logic symbol figure 2 sicofi ? 2-c logic symbol 1.3 typical applications many applications will benefit from the versatility of the sicofi ? 2-c codec and filter. the inherent flexibility enables several products to be developed around one basic architecture, thus affording potentially significant savings in time to market, inventory costs, and support administration. the following list represents some of the typical applications for which the sicofi ? 2-c codec was designed: analog linecards for central offices and pbxs, small pbx or key systems, digital loop carrier (dlc) systems, digital added main lines (daml) systems, pair-gain systems, fiber-to-the-curb (fttc) systems, radio-in-the-loop (ritl) systems, and any multi-channel, digital voice processing, storage, or communication applications. refer to the product overview , chapter 5 application hints for more information. analog interface int12 reset# v out2 channel 2 channel 1 v in2 v out1 v in1 sicofi ? 2-c peb 2266 chclk2 chclk1 microcontroller interface dout din dclk cs# si1_0 si1_1 so1_0 so1_1 sb1_0 sb1_1 sb1_2 si2_0 si2_1 so2_0 so2_1 sb2_0 sb2_1 sb2_2 signaling interface ch. 1&2 channel 2 channel 1 pclk drb dxb tcb# dxa tca# mclk dra fsc pcm clocks master clock highway a highway b pcm interface 2266_203 peb 2266 pef 2266 pin descriptions hardware reference manual 5 2001-02-20 2 pin descriptions 2.1 pin diagram (top view) figure 3 pin configuration of sicofi ? 2-c 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 1 2 345 6 78 9 10 11 12 13 14 15 16 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 sicofi ? 2-c peb 2266-h 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 chclk1 int12 si1_1 si1_0 sb1_2 sb1_1 sb1_0 so1_1 so1_0 so2_0 so2_1 sb2_0 sb2_1 sb2_2 si2_0 si2_1 pclk fsc drb dxb tcb# dra dxa tca# v ddd reset# mclk gndd dout din dclk cs# chclk2 nc nui nui nuio nuio nuio nc nc nc nc nuio nuio nuio nui nui nc nc v in2 v in1 gnda nc v dda nc gnda v ddref v ref gnda2 v out2 v dda12 v out1 gnda1 2266_204 p-mqfp-64 peb 2266 pef 2266 pin descriptions hardware reference manual 6 2001-02-20 2.2 pin definitions and functions table 1 pin definitions and functions pin symbol type function ch. 1, 2 nui i non usable input pins tie directly to digital ground (pin 21) 3, 4, 5 nuio i/o non usable input/output pins tie via a pull-down-resistor to digital ground (pin 21) 6, 7, 8, 9 nc not connected pins not connected in this device. 10, 11, 12 nuio i/o non usable input/output pins tie via a pull-down-resistor to digital ground (pin 21) 13, 14 nui i non usable input pins tie directly to digital ground (pin 21) 15 nc not connected pins not connected in this device. 16 chclk2 o chopper clock output 2 provides 256, 512, or 16,384 khz signal; sync. to mclk. both 17 cs# i chip select microcontroller interface chip select, enable to read or write; active low. both 18 dclk i data clock microcontroller interface data clock, shifts data from or to device; maximum clock rate 8192 khz. both 19 din i data input microcontroller interface control data input pin; dclk determines data rate. both 20 dout o data output microcontroller interface control data output pin; dclk determines data rate: dout is high impedance "z" if no data is transmitted from the sicofi ? 2-c. both 21 gndd i digital ground ground reference for all digital signals. internally isolated from gnda1 (pin 50), gnda2 (pin 54), and gnda (pins 59 and 63). both peb 2266 pef 2266 pin descriptions hardware reference manual 7 2001-02-20 22 mclk i master clock input 1536, 2048, 4096 or 8192 khz must be applied for any operation (selected in register xr5). mclk, pclk, fsc must be synchronous. both 23 reset# i reset input forces the device to default setting mode; active low. both 24 v ddd i digital supply voltage +5 v supply for digital circuits (use 100 nf blocking cap.). both 25 tca# o transmit control output a pcm interface: active if data is transmitted via dxa; active low, open drain. both 26 dxa o data transmit to pcm-highway a pcm interface: pcm data for each channel is transmitted in 8-bit bursts every 125 s. both 27 dra i data receive from pcm-highway a pcm interface: pcm data for each channel is received in 8-bit bursts every 125 s. both 28 tcb# o transmit control output b pcm interface: active if data is transmitted via dxb; active low, open drain. both 29 dxb o data transmit to pcm-highway b pcm interface: data for each channel is transmitted in 8-bit bursts every 125 s. both 30 drb i data receive from pcm-highway b pcm interface: data for each channel is received in 8-bit bursts every 125 s. both 31 fsc i frame synchronization clock 8 khz; reference for individual time slots, indicates start of pcm frame; mclk, pclk, fsc must be synchronous. both 32 pclk i pcm data clock 128 to 8192 khz; determines the rate at which pcm data is shifted into or out of the pcm-ports. mclk, pclk, fsc must be synchronous. both 33 chclk1 o chopper clock output 1 provides programmable (2 ? 28 ms) output signal (synchronous to mclk). both pin symbol type function ch. peb 2266 pef 2266 pin descriptions hardware reference manual 8 2001-02-20 34 int12 o interrupt output, channels 1 and 2 active high. both 35 si1_1 i signaling input channel 1, pin 1 1 36 si1_0 i signaling input channel 1, pin 0 1 37 sb1_2 i/o bi-directional signaling, channel 1 pin 2 1 38 sb1_1 i/o bi-directional signaling, channel 1 pin 1 1 39 sb1_0 i/o bi-directional signaling, channel 1 pin 0 1 40 so1_1 o signaling output, channel 1, pin 1 1 41 so1_0 o signaling output, channel 1, pin 0 1 42 so2_0 o signaling output, channel 2, pin 0 2 43 so2_1 o signaling output, channel 2, pin 1 2 44 sb2_0 i/o bi-directional signaling, channel 2 pin 0 2 45 sb2_1 i/o bi-directional signaling, channel 2 pin 1 2 46 sb2_2 i/o bi-directional signaling, channel 2 pin 2 2 47 si2_0 i signaling input, channel 2, pin 0 2 48 si2_1 i signaling input, channel 2, pin 1 2 49 v in1 i analog voice (voltage) input, channel 1 requires a coupling capacitor >39 nf to the slic. 1 50 gnda1 i analog ground, channel 1 not internally connected to gndd or gnda2 or gnda. 1 51 v out1 o analog voice (voltage) output, channel 1 requires a coupling capacitor to the slic. the capacitor value depends on the slic ? s input impedance. (see chapter 5.1 , "analog interface" on page 27). 1 52 v dda12 i analog supply voltage , channels 1 and 2 +5 v (100 nf blocking capacitor required). both 53 v out2 o analog voice (voltage) output, channel 2 requires a coupling capacitor to the slic. the capacitor value depends on the slic ? s input impedance. (see chapter 5.1 , "analog interface" on page 27). 2 54 gnda2 i analog ground, channel 2 not internally connected to gndd or gnda1 or gnda. 2 55 v in2 i analog voice (voltage) input , channel 2 requires a coupling capacitor >39 nf to the slic. 2 pin symbol type function ch. peb 2266 pef 2266 pin descriptions hardware reference manual 9 2001-02-20 56 v ref i/o reference voltage must connect to a 220 nf cap. to ground. both 57 v ddref i analog supply reference voltage +5 v (100 nf blocking capacitor required). both 58 nc not connected pin not connected in this device. 59 gnda i analog ground internally isolated from gndd (pin 21), gnda1(pin 50), and gnda2 (pin 54). 60 nc not connected pin not connected in this device. 61 v dda i analog supply voltage +5 v (100 nf blocking capacitor required). 62 nc not connected pin not connected in this device. 63 gnda i analog ground internally isolated from gndd (pin 21), gnda1(pin 50), and gnda2 (pin 54). 64 nc not connected pin not connected in this device. pin symbol type function ch. peb 2266 pef 2266 functional description hardware reference manual 10 2001-02-20 3 functional description the telephone subscriber loop is a bi-directional two-wire line. the subscriber line interface circuit (slic) on the network side converts the two-wire interface to a four-wire interface which communicates with the sicofi ? 2-c via separate receive and transmit signals, v in and v out . the slic can be either a transformer or an electronic circuit with operational amplifiers. it must have a defined input impedance towards the subscriber line for maximum signal power transfer and return loss. the requirements for the input impedance vary from country to country and demand impedance matching to the different environments. country-specific adaptations are also required for the transhybrid loss, which is a loss between the transmit and the receive ports of the two- wire to four-wire hybrid. 3.1 dsp-based architecture the impedance matching and transhybrid balancing functions are performed by loop filters between the transmit path (analog to pcm) and the receive path (pcm to analog). the filter characteristics must be adjusted according to the local requirements of each market. in the analog domain, filters must be optimized in hardware; this is generally both tedious and time-consuming. this is not the case with the dsp-based sicofi ? 2- c two-channel codec. its integrated signal processor implements the impedance matching and transhybrid balancing functions as digital, programmable filters. it also performs frequency response corrections and level adjustments to enable the design of a truly universal and internationally applicable telephone linecard. transmission characteristics and frequency behavior are enhanced by the accuracy of the digital filters, which do not fluctuate over temperature or with age. as an additional benefit of its dsp-based architecture, the peb 2266 also provides two tone generators per channel. an on-chip level-metering unit allows line-characterization without extra hardware; it can also be used to detect specific tones, e.g., modem tones. 3.2 programming and control a very simple microcontroller interface is used to program the sicofi ? 2-c functions. the same port provides access to 14 general purpose i/o pins of the signaling interface. this allows efficient and convenient monitoring and control of other linecard functions, such as on-/off-hook detection, ground-key detection, switching of ring signals and test relays. the serial microcontroller interface provides a programming and control interface and is generic and non-proprietary for use with any microcontroller. it can be implemented with as few as three signal lines, since the data receive and data transmit pins may be strapped together. peb 2266 pef 2266 functional description hardware reference manual 11 2001-02-20 figure 4 sicofi ? 2-c block diagram figure 4 shows the functional blocks and the interface pins of the sicofi ? 2-c: two independent bi-directional voice channels; oversampling sigma-delta a/d and d/a converters with excellent resolution, dynamic range, linearity, accuracy and signal-to-noise performance; hardware filters for decimation and interpolation of the adc and dac bit stream, and pre-processing of the voice data to reduce the load of the dsp; dsp core with programmable, channel-independent filter structures for impedance matching, transhybrid balancing, frequency correction and level adjustments; configurable a-law or -law compressor and expander units; two pcm port with data rates from 128 kbps to 8 mbps per highway; programmable time slot assignment for each channel; fourteen signaling input and output pins, accessible through registers; on-chip pll for an internal 16,384 khz clock; two programmable versatile clock outputs; eight common configuration registers (xr-registers) affecting all two channels; two sets of six channel-specific registers (cr-registers); and coefficient ram (cram) for filter coefficients storage for each channel. peb 2266, sicofi2-c pcm- interface with time slot assignment adc dac programmable filters and gain hardware filters digital signal processing adc dac programmable filters and gain hardware filters a-law or -law signaling interface serial microcontroller interface compander a-law or -law v in1 v out1 v in2 v out2 fsc pclk dxa dra tca# highway a dxb drb tcb# highway b dout din cs# dclk int12 registers and cram six_y sox_y sbx_y pll, clocking mclk chclk2 chclk1 2266_205 peb 2266 pef 2266 operational description hardware reference manual 12 2001-02-20 4 operational description each channel of the sicofi ? 2-c can be in one of two stable states: ? standby ? and ? operating ? . these states can be switched by programming bit 0 (pu) in the channel-specific configuration register cr1. ? standby ? is a power-saving state. keeping any unused channels in this state reduces the overall system power dissipation. the third state, ? reset ? , is transient and is reached after applying power to the device (power on), after asserting a logic low signal to the reset#-pin (hw-reset), or after issuing an xop command with bit 7 (rst) set to "1" (sw-reset). both channels would be affected in any case. 4.1 operating states figure 5 sicofi ? 2-c state diagram 4.1.1 power on all input pins must be at gnd level before applying vdd to the sicofi ? 2-c. otherwise, the device may not enter the reset state. in this case, the sicofi ? 2-c can be reset by hw- or sw-reset, or can be initialized by setting all registers to zero. 4.1.2 hardware reset voltage levels lower than 1.2 v applied to pin 23 (reset#) for more than 3 s will reset the sicofi ? 2-c. spikes that are shorter than 1 s will be ignored. when reset# is released the sicofi ? 2-c will enter standby state. 2266_206 reset (both channels) power-on hw-reset sw-reset power up ch.2 power down ch.2 power up ch.1 power down ch.1 operating ch.1 standby ch.1 operating ch.2 standby ch.2 peb 2266 pef 2266 operational description hardware reference manual 13 2001-02-20 table 2 register values and accessibility table 3 input and output pin behavior table 4 power dissipation register sicofi ? 2-c state reset standby operating cr0 ... cr4 00 h user configurable user configurable xr0 ... xr7 00 h user configurable user configurable cram unchanged user configurable user configurable pin sicofi ? 2-c state reset standby operating din ignored serial input serial input dout high impedance serial output serial output dra, drb ignored ignored active receive time slot dxa, dxb high impedance high impedance active transmit time slot tca#, tcb# high high low during active transmit time slot v out1 , v out2 high impedance high impedance analog output v in1 , v in2 ignored ignored analog input sbx_y configured as input programmable as input or output programmable as input or output sox_y gndd digital output digital output six_y ignored digital input digital input chclk1 high programmable frequency programmable frequency chclk2 high programmable freq. (not 16,384 khz) programmable frequency no. of channels operating typical power dissipation none 2.5 mw 1 70 mw 2 90 mw peb 2266 pef 2266 operational description hardware reference manual 14 2001-02-20 4.2 transmission characteristics 4.2.1 overload point the overload point of the sicofi ? 2-c a/d converters is at 2.223 v. this is the peak amplitude of a sine wave level of 1.572 vrms. higher input signal levels will be distorted. theoretical load capacities for a-law and -law encoded signals are defined in itu-t recommendation g.711. these values correspond to the sicofi ? 2-c overload point: table 5 maximum signal levels 4.2.2 0 dbm0-levels the analog voltage levels corresponding to a 0 dbm0 sine wave signal can be calculated from the maximum signal levels shown in table 5 . the results are shown in table 6 . table 6 analog voltage levels corresponding to 0 dbm0-level note: periodic pcm codes for a 1 khz sine wave signal with 0 dbm0 level can be found in itu-t g.711. encoding law pcm interface analog interface theoretical load capacity (according to itu-t g.711) max. sine wave level (sicofi ? 2-c overload point) a-law 3.14 dbm0 1.572 vrms -law 3.17 dbm0 encoding law analog sine wave level corresponding to 0 dbm0 pcm level a-law 1.572 vrms*10^(-3.14/20) = 1.095 v rms -law 1.572 vrms*10^(-3.17/20) = 1.091 v rms peb 2266 pef 2266 operational description hardware reference manual 15 2001-02-20 4.2.3 compressor gain relative to coding law the -law compressor unit of the sicofi ? 2-c automatically adds 1.94 db gain, which has to be considered for the total gain calculation. the accumulated gain of all programmable transmit filters (ax1+ax2+frx) must not exceed 7 db if the device is set to -law operation. if the device is set to a-law operation, then the accumulated gain must not exceed 9 db. figure 6 analog and pcm signal levels in a-law mode figure 7 analog and pcm signal levels in -law mode a-law compressor transmit a-law expander receive 0dbm0 1014 hz 0dbm0 dxa/b dxa/b a/d 0db gain d/a 0db gain v out v in 1014 hz 1.095 v rms 1.095 v rms 2266_207 a/d -law compressor [+1.94 db] transmit d/a -law expander receive v out v in 1014 hz 1.091 v rms 1.091 v rms 1.94 dbm0 1014 hz 0dbm0 dxa/b dxa/b 0db gain 0db gain 2266_208 peb 2266 pef 2266 operational description hardware reference manual 16 2001-02-20 4.2.4 operating conditions the specifications to which the sicofi ? 2-c are tested are tighter than the itu-t q.552 specification to guardband various slic implementations. the guaranteed transmission characteristics of the sicofi ? 2-c under test conditions ensure that the final linecard design will meet the itu-t specification. the figures in this document are based on the subscriber-line board requirements. proper adjustment of the programmable filters (transhybrid balancing, impedance matching, frequency-response correction) requires a complete knowledge of the analog environment in which the sicofi ? 2-c is to be used. unless otherwise stated, the transmission characteristics are guaranteed within the following operating conditions: t a = 0 c to 70 c ( peb 2266), t a = -40 c to 85 c ( pef 2266 ); v dd = 5 v 5%; gnda1,2,3,4 = gndd = 0 v; load on v out : r l > 300 ? ; c l < 50 pf; h(im) = h(th) = 0; h(r1) = h(frx) = h(frr) = 1; hpr and hpx enabled; ar = 0 to ? 9 db (ar = ar1 + ar2 + frr + r1); ax = 0 to +9 db for a-law, ax = 0 to +7 db for -law (ax = ax1 + ax2 + frx); f = 1014 hz; 0 dbm0; a-law or -law; agx = 0 db, +6.02 db; and agr = 0 db, ? 6.02 db. figure 8 simplified signal flow diagram 2266_209 adc dac receive path transmit path analog output analog input pcm input pcm output im agr r1 ar2 frr ar1 exp cmp ax1 frx ax2 agx th hpx hpr peb 2266 pef 2266 operational description hardware reference manual 17 2001-02-20 4.2.5 gain accuracy table 7 gain accuracy 4.2.6 gain tracking (receive and transmit) the gain deviation for a 1014 hz sine-wave input signal will stay within limits shown in table 8 . all values are relative to the gain of a 0 dbm0 input signal. table 8 gain deviations with input level parameter symbol limit values unit test conditions min. typ. max. absolute gain g ? 0.20 0.10 +0.20 db t a =25 c, v dd =5v, agx = agr = 0 db variation with temperature 0.05 db t a = ? 40 c to 85 c variation with supply voltage 0.05 db v dd = 5 v 5% variation with analog gain 0.05 db agx= +6.02 db, agr= ? 6.02 db input level symbol gain deviation unit test conditions min. typ. max. -55 to -50 dbm0 ? g 1.4 db 1014 hz sine-wave test signal. reference level is at 0 dbm0. -50 to -37 dbm0 ? g0.5db -37 to 3 dbm0 ? g 0.25 db peb 2266 pef 2266 operational description hardware reference manual 18 2001-02-20 4.2.7 frequency response table 9 attenuation with frequency in transmit and receive direction 4.2.8 group delay 4.2.8.1 group delay, absolute values table 10 shows the limit values for the absolute group delay. the maximum delays are valid when the sicofi ? 2-c is operating with h(th) = h(im) = 0, and h(frr) = h(frx) = 1, and include the delay through the a/d and d/a converters. the typical delays are the average of all different time slot delays during one pcm frame. table 10 group delay, absolute values input frequency receive loss transmit loss unit test conditions min. max. min. max. 0 hz to 100 hz 0 > 2 db 0 dbm0 input signal level. 1014 hz reference frequency 100 hz to 200 hz 0 0 db 200 hz to 300 hz -0.125 -0.125 1 db 300 hz to 3.0 khz -0.125 0.125 -0.125 0.125 db 3.0 khz to 3.2 khz -0.125 0.3 -0.125 0.3 db 3.2 khz to 3.4 khz -0.125 0.65 -0.125 0.65 db > 3.4 khz 0 0 db parameter symbol limit values unit test conditions min. typ. max. transmit delay d xa 300 375 450 s 0 dbm0 input signal level, f test at t g min. receive delay d ra 300 375 450 s peb 2266 pef 2266 operational description hardware reference manual 19 2001-02-20 4.2.8.2 group delay distortion with frequency the group delay distortion in transmit and receive direction will stay within the limits shown in table 11 . group delay distortion values are referenced to the minimum value of group delay (t g min). table 11 group delay distortion with frequency 4.2.9 noise table 12 idle channel noise in transmit direction table 13 idle channel noise in receive direction frequency symbol limit values unit test conditions min. typ. max. 500 hz to 600 hz ? t g 300 s 0 dbm0 input signal level, reference point is at t g min. 600 hz to 1.0 khz ? t g 150 s 1.0 khz to 2.6 khz ? t g 100 s 2.6 khz to 3.0 khz ? t g 300 s parameter symbol limit values unit min. typ. max. a-law, psophometric ( v in =0v) n tp ? 67.4 dbm0p -law, c-message ( v in =0v) n tc 17.5 dbmc -law, c-message ( v in =0v) n tc 17.5 dbrnc0 parameter symbol limit values unit min. typ. max. a-law, psophometric (idle code + 0) n rp ? 85 ? 78.0 dbm0p -law, c-message (idle code + 0) n rc 5 12.0 dbmc -law, c-message (idle code + 0) n rc 5 12.0 dbrnc0 peb 2266 pef 2266 operational description hardware reference manual 20 2001-02-20 4.2.10 harmonic and intermodulation distortion table 14 harmonic and intermodulation distortion 4.2.11 total distortion table 15 signal-to-total distortion ratio measured with sine wave figure 9 total distortion measured with sine-wave, receive and transmit parameter symbol limit values unit test conditions min. typ. max. harmonic distortion 2 nd , 3 rd order hd ? 50 ? 44 db 0 dbm0; f = 1014 hz intermodulation r 2 r 3 imd imd ? 46 ? 56 db db equal-level, 4-tone method (eia-464) at composite level of -13 dbm0; f = 300 hz to 3400 hz input level symbol min. values unit test conditions a-law -law -45 db s/d 24.5 27 db sine wave f=1014 hz, receive and transmit, -law: c-message weighted, a-law: psophometrically weighted. -40 db s/d 29.5 31 db -30 db s/d 35.5 35.5 db > -28 db s/d 36.4 36.4 db 2266_210 -60 0 input level 10 20 30 40 -50 -40 -30 -20 -10 0 dbm0 db 27 24.5 -45 -28 35.5 29.5 31 a-law -law 36.4 s/d peb 2266 pef 2266 operational description hardware reference manual 21 2001-02-20 table 16 signal-to-total distortion ratio measured with noise figure 10 total distortion receive (noise) figure 11 total distortion transmit (noise) input level symbol min. value, peb 2266 min. value, pef 2266 unit receive transmit receive transmit -55 db s/d 14.7 13.7 14.7 12 db -40 db s/d 29.7 28.7 29.7 27 db -34 db s/d 34.3 33.3 34.3 33.3 db -27 db s/d 36 35.4 36 35.4 db -24 to -6 db s/d 36.7 36.3 36.7 36.3 db -3 db s/d 28.4 27.4 28.4 27.4 db 2266_211 -60 0 input level 10 20 30 40 -50-40-30-20-10 0 dbm0 db -55 -34 -24 -27 -3 -6 14.7 28.4 29.7 36.7 34.3 36 s/d 2266_212 -30 20 13.7 -60 0 12 10 -55 -50 -40 -34 35.4 28.7 27.0 33.3 30 db 40 -10 -20 input level -24 -27 dbm0 -6 -3 0 27.4 36.3 s/d peb 2266 pef 2266 peb 2266 pef 2266 operational description hardware reference manual 22 2001-02-20 4.2.12 single frequency distortion any resulting signal with a frequency different from the test input signal will stay at least 28 db below the input signal level. 4.2.13 overload compression this is measured with a 1014 hz sine-wave signal. the overload point in -law mode is at 3.17 dbm0. figure 12 overload compression ( - law coding, transmit direction) 4.2.14 crosstalk table 17 crosstalk between channels test input signal frequency range max. input level receive direction 300 hz to 3.4khz 0 dbm0 transmit direction 0 hz to 12 khz 0 dbm0 parameter symbol limit values unit test conditions min. typ. max. crosstalk, 0dbm0 ct ? 85 ? 80 db f= 200 hz to 3400 hz, any combination of directions and channels 2266_213 0 fundamental input power -1 fundamental 0 1 2 3 4 5 6 7 8 dbm0 10 0.25 -0.25 1234567dbm09 output power peb 2266 pef 2266 operational description hardware reference manual 23 2001-02-20 4.2.15 out-of-band discrimination in transmit direction with any 0 dbm0 sine-wave signal below 100 hz and in the range from 3.4 khz to 100 khz (out-of-band signal) applied to an analog input (v inx ), the level of any resulting frequency component at the digital output will stay at least x db (see table 18 ) below the output level of a 0 dbm0 1khz sine-wave reference signal at the analog input. table 18 out-of-band signals applied to the analog inputs (v inx ) the hardware filters behind the a/d converters reject teletax pulses with their poles at 12 khz 150 hz and 16 khz 150 hz. figure 13 out-of-band discrimination in transmit direction input frequency min. output signal rejection x unit test conditions 0 hz to 60 hz 25 db 0 dbm0 sine-wave input signal on v in 60 hz to 100 hz 10 db 3.4 khz to 4 khz db 4 khz 15 db 4 khz to 4.6 khz db 4.6 khz to 100 khz 40 db 14 ? 4000 f ? 1200 -------------------- - ?? ?? sin 1 ? ?? ?? 18 ? 4000 f ? 1200 -------------------- - ? ? ? ? sin 7 9 -- - ? ?? ?? 0 0 khz f 10 0 0.06 0.1 3.4 4 4.6 6 10 18 10 20 30 40 db transmit out-of-band discrimination x 25 32 15 2266_214 peb 2266 pef 2266 operational description hardware reference manual 24 2001-02-20 4.2.16 out-of-band discrimination in receive direction with any 0 dbm0 sine-wave frequency in the range from 300 hz to 3.99 khz applied to the digital input (pcm time slot), the level of any resulting out-of-band signal at the analog output will stay at least x db (see table 19 ) below the output level of a 0 dbm0 1khz sine-wave reference signal at the digital input. table 19 out-of-band signals at the analog outputs (v outx ) figure 14 analog output: out-of-band signals output frequency min. output signal rejection x unit test conditions 3.4 khz to 4.6 khz db 0 dbm0 sine-wave input signal on digital input (pcm time slot) 4.6 khz to 10.55 khz db 4 khz 15 db 4.6 khz 28 db >10.55 khz 57 db 14 ? 4000 f ? 1200 -------------------- - ?? ?? sin 1 ? ?? ?? 35 22 f 4600 ? 5950 -------------------- - + 0 0 khz f 10 0 0.06 0.1 3.4 4 4.6 6 10 18 db receive out-of-band discrimination x 10 20 30 40 50 60 15 35 10.55 8 16 28 57 2266_215 peb 2266 pef 2266 operational description hardware reference manual 25 2001-02-20 4.2.17 out-of-band idle channel noise at analog output with an idle code (any sequence of constant pcm octets) applied to the digital input, the level of any resulting out-of-band power spectral density at the analog output, measured with 3 khz bandwidth, will be not greater than the limit curve shown in figure 15 . figure 15 analog output: out-of-band idle channel noise -100 f 10 12 10 3 10 4 10 khz -90 -80 -70 -60 -50 -40 dbm0 -55 -78 out of band noise 2266_216 peb 2266 pef 2266 operational description hardware reference manual 26 2001-02-20 4.2.18 transhybrid loss the quality of transhybrid-balancing is very sensitive to deviations in gain, group delay, and deviations inherent to the a/d- and d/a-converters, as well as to all external components used on a linecard (slic, op ? s etc.). transhybrid loss test setup: the sicofi ? 2-c test loop ? dlb-ana ? is selected (see figure 34 ), which connects the analog output with the analog input. the programmable filters frr, ar, frx, ax are by-passed. the im-filter is disabled, (h(im)=0). the balancing filter th is enabled with optimized coefficients for this configuration ( v out = v in ). a 0 dbm0 sine wave signal with a frequency in the range of 300 hz to 3400 hz is applied to the digital input. the signal levels of the resulting echo at the digital output will stay below the values shown in table 20 . table 20 transhybrid loss input frequency symbol transhybrid loss unit test condition min. typ. 300 hz thl 300 27 40 db t a = 25 c; v dd = 5 v agx = agr = 0 db; typical variation of amplitude: 0.15 db delay: 0.5 s. 500 hz thl 500 30 45 db 2500 hz thl 2500 29 40 db 3000 hz thl 3000 27 35 db 3400 hz thl 3400 27 35 db peb 2266 pef 2266 interface description hardware reference manual 27 2001-02-20 5 interface description the sicofi ? 2-c provides four interfaces: analog interface, pcm interface, signaling interface, and serial microcontroller interface. a general description of these interface is given in the product overview , chapter 4 . refer to the programmers reference manual for information on the configuration and operation of the four interfaces. the subsequent chapters in this manual explain how to connect the sicofi ? 2-c to subscriber line interface circuits (slics), microcontrollers, and pcm highways. 5.1 analog interface the analog interface in combination with a subscriber line interface circuit (slic) forms a configurable tip & ring (t/r) telephone line. the ac transmission characteristic of the sicofi ? 2-c ? slic combination can be controlled by programming the digital filter structures inside the sicofi ? 2-c. the correct filter coefficients are determined by the targeted ac transmission behavior (e.g. telco specification) and by the transfer functions of the slic. the sicofi ? 2-c can be interfaced directly to electronic slics or transformer solutions. the high driving capability of up to 300 ohms eliminates the need for an external amplifier that is normally used with transformer slics. the peak amplitude of the analog inputs and outputs is at 2.223 v (overload point). out-of-band signals applied to the analog inputs are suppressed by the on-chip digital hardware filters. the poles of these filters are fixed at 12 khz and 16 khz which suppresses the echo signal from teletax pulses very efficiently: as long as the amplitude of the teletax echo stays below the overload threshold of 2.223 vp (1.57 vrms), the voice signal in the transmit path will not be disturbed. thus, the on-chip hardware filters can eliminate the need for external teletax filters. 5.1.1 coupling capacitors at the analog interface a coupling capacitor >39 nf must be used on the v in -pins in the transmit direction. the required value for the coupling capacitor on the v out -pins depends on the input resistance of the slic-circuitry ( r load ). it has to be chosen to fulfil the frequency response requirement in the receive direction. figure 16 can be used to determine an appropriate value for the coupling capacitor ( c ext1 ). peb 2266 pef 2266 interface description hardware reference manual 28 2001-02-20 figure 16 analog interface to two subscriber line interface circuits (slics) r load ext1 c 10 -3 10 23 10 4 10 -2 10 -1 10 1 10 2 10 0 10 f ? 5 10 6 10 c ext1 = f min r load 1 f min = 250 hz 57 56 51 49 50 54 53 55 v dda12 v ref v ddref 52 sicofi2-c 100nf 220nf channel 1 v in1 v out1 gnda1 channel 2 v in2 v out2 gnda2 c ext1 c ext1 > 39nf > 39nf 100nf 100nf slic 1 t/r r load slic 2 t/r r load 2266_217 peb 2266 pef 2266 interface description hardware reference manual 29 2001-02-20 5.1.2 analog interface pins table 21 analog interface pins channel symbol pin function v in1 49 analog input. requires a coupling capacitor >39 nf to the slic (see figure 16 ). v out1 51 analog output. requires a coupling capacitor to the slic. the capacitor?s value depends on the input impedance of the slic, (see figure 16 ). gnda1 50 analog ground. internally isolated from gndd, gnda, or gnda2. v in2 55 analog input. requires a coupling capacitor >39 nf to the slic (see figure 16 ). v out2 53 analog output. requires a coupling capacitor to the slic. the capacitor?s value depends on the input impedance of the slic, (see figure 16 ). gnda2 54 analog ground. internally isolated from gndd, gnda, or gnda2. v dda12 52 analog supply voltage. +5 v (100 nf blocking capacitor required, see figure 16 ). v ddref 57 analog supply reference voltage. +5 v (100 nf blocking capacitor required, see figure 16 ). v ref 56 reference voltage must connect to a 220 nf cap. to ground, see figure 16 . peb 2266 pef 2266 interface description hardware reference manual 30 2001-02-20 5.2 pcm interface the sicofi ? 2-c provides an industry ? standard pcm interface with access to one pcm highways. the pcm interface has the following features: data rate from 128 kbit/s to 8 mbit/s per highway, 2 to 128 time slots per frame per highway, pcm data format serialized 8 bits with msb first, configurable a-law or -law coding, independently configurable time slot and highway for each channel and direction, pcm clock speed of once or twice the bit rates, programmable sampling slopes, and programmable frame delay. 5.2.1 pcm interface pins table 22 pcm interface pins 5.2.2 pcm receive and transmit example figure 17 and figure 19 illustrate the time slot and bit positions resulting from the programming example below: table 23 pcm register configuration example symbol pin function pclk 32 pcm-clock, 128 khz to 8192 khz; shared for both highways. fsc 31 frame synchronization clock, 8 khz; shared for both highways. dra 27 receive data input for pcm-highway a. drb 30 receive data input for pcm-highway b. dxa 26 transmit data output for pcm-highway a, open drain. dxb 29 transmit data output for pcm-highway b, open drain. tca# 25 transmit control output for highway a, low when dxa is active. tcb# 28 transmit control output for highway b, low when dxb is active. channel cr4 receive setting cr5 transmit setting 1 0000 0000 dra, time slot 0 0000 0000 dxa, time slot 0 2 0000 1111 dra, time slot 15 0001 0010 dxa, time slot 18 all xr6=0000 0000; single clock mode, no pcm offset; pclk=2048 khz. peb 2266 pef 2266 interface description hardware reference manual 31 2001-02-20 figure 17 pcm interface example: location of time slots figure 18 pcm interface example: detail a the pins dra/b and dxa/b may be strapped together to form a multiplexed bi-directional pcm port. 2266_218 tca# detail a fsc dxa dra pclk 23 high 'z' high 'z' time slot 01 125 s 31 15 18 0 dra pclk fsc dxa tca# high 'z' high 'z' voice data voice data clock01234567 0 1 2 3 4 5 6 7 bit 2266_219 peb 2266 pef 2266 interface description hardware reference manual 32 2001-02-20 5.3 signaling interface the sicofi ? 2-c signaling interface is used to monitor and control supervision and signaling functions on up to four subscriber lines. the device generates interrupt signals to indicate signaling status changes on any of the input pins. the signaling interface consists of the following i/o pins and functions: 14 signaling pins (2 input pins, 2 output pins, and 3 user-configurable bi-directional pins per channel), debouncing functions, 1 interrupts (one for each channel-pair), and 2 clock output signals (user configurable). 5.3.1 signaling interface pins figure 19 signaling example: two subscriber lines subscriber lines si1_0 si1_1 sb1_2 so1_1 sb1_1 channel 1 so1_0 sb1_0 channel 2 si2_0 si2_1 sb2_2 so2_1 sb2_1 so2_0 sb2_0 sicofi2-c int 12 t/r t/r operating mode off-hook det. ring relay status led ring relay status led ground key det. slic 2 slic 1 operating mode off-hook det. ground key det. chclk1 chclk2 39 38 37 36 35 41 40 43 42 48 47 46 45 44 33 16 34 microcontroller 2266_220 peb 2266 pef 2266 interface description hardware reference manual 33 2001-02-20 table 24 signaling interface: pins and functions for slic interfaces 5.3.2 debouncing functions and interrupt generation all signaling inputs are sampled at programmable intervals (field n in register xr4). if all the inputs assigned to one channel-pair (1&2) have been stable for two subsequent samples their values are stored in the signaling registers and the associated interrupt output (int12) is set high. refer to the programmer?s reference manual for further details on this function. 5.3.3 clock output signals two programmable chopper clock output signals are provided by the peb 2266: chclk1 (pin 33) is configured in register xr4.field t (bits xr4.3 to xr4.0) chclk2 (pin 16) is configured in register xr5.chclk2 (bits xr5.3 and xr5.2) both chopper clock output signals are only available if a valid master clock signal is applied to pin mclk. chclk2 = 16,384 khz: requires at least one channel in power-up state. table 25 clock programming channel 1 channel 2 pin symbol function pin symbol function 36 si1_0 signaling input 0 47 si2_0 signaling input 0 35 si1_1 signaling input 1 48 si2_1 signaling input 1 41 so1_0 signaling output 0 42 so2_0 signaling output 0 40 so1_1 signaling output 1 43 so2_1 signaling output 1 39 sb1_0 bi-directional signaling 0 44 sb2_0 bi-directional signaling 0 38 sb1_1 bi-directional signaling 1 45 sb2_1 bi-directional signaling 1 37 sb1_2 bi-directional signaling 2 46 sb2_2 bi-directional signaling 2 34 int12 interrupt output, channels 1+2, active high chclk1 chclk2 xr4.field t output (pin 33) xr5.chclk2 output (pin 16) 0000 high level (+5v) 00 high level (+5v) 0001 to 1110 clock period = t *2ms (min. 2 ms, max. 28 ms) 01 512 khz signal 10 256 khz signal 1111 low level (0v) 11 16,384 khz signal peb 2266 pef 2266 interface description hardware reference manual 34 2001-02-20 5.4 serial microcontroller interface the serial microcontroller interface is used to access the sicofi ? 2-c ? s internal registers and the coefficient ram (cram). the serial microcontroller interface consists of four pins: two data pins (din, dout), one clock pin (dclk) and one pin for chip select (cs#). if din and dout are strapped together, only three microcontroller i/o pins are required to build this interface. figure 20 serial microcontroller interface 5.4.1 serial microcontroller interface pins table 26 serial microcontroller interface: pins and functions symbol pin function cs# 17 chip select, enable to read or write data, active low. dclk 18 data clock, shifts data from or to device; max. clock rate is 8192 khz. din 19 control data input; sampled with rising edge of dclk. dout 20 control data output; bits are shifted with the falling edge of dclk; dout is in high impedance state when no data is transmitted from the sicofi ? 2-c. sicofi2-c microcontroller out in out out cs# dout dclk din sicofi2-c microcontroller out out i/o cs# dout dclk din configuration a: separate din, dout configuration b: bi-directional data 2266_221 peb 2266 pef 2266 interface description hardware reference manual 35 2001-02-20 5.4.2 write access following a falling edge of cs#, the first eight bits received on din specify the type of command. the data bytes following a write command are stored in the selected configuration registers or the selected part of the coefficient ram. the number of data bytes depends on the type of command. after every command cs# must be set to ? 1 ? . . figure 21 example for a two-byte write access 5.4.3 read access if the first eight bits received via din represent a read command, the sicofi ? 2-c will initiate its response via dout. an identification byte (81 h ) is followed by the requested number of data bytes (contents of configuration registers or contents of the cram). during execution of a read command, the device will ignore data on din. after every command cs# must be set to ? 1 ? . . figure 22 example for a one-byte read access 2266_222 76543210 0 1 2 3 4 5 6 70 1 2 3 4 5 6 7 din dout dclk cs# write command data byte 1 data byte 2 high 'z' 2266_223 76543210 din dout dclk cs# read command data byte 1 high 'z' 7654321076543210 high 'z' identification 81 h peb 2266 pef 2266 interface description hardware reference manual 36 2001-02-20 for byte-by-byte transfer, the high time of dclk can be prolonged, resulting in a user-defined ? waiting time ? between bytes. this mechanism can be used for writing to and reading from the device. figure 23 example for a read access with byte-by-byte transfer read and write commands can be chained by leaving cs# low after the completion of each command sequence. for read or write access to individual registers, the command sequence may be terminated by rising cs# after the transmission of any number of bytes. 5.4.4 three-wire access din and dout may be strapped together and connected to a single i/o pin of the microcontroller. the interface remains fully functional with only three wire connections. after every command cs# must be set to ? 1 ? . figure 24 bi-directional data signal: din and dout strapped together 76543210 din dout dclk cs# read command data byte 1 high 'z' high 'z' 7654321 0 76543210 identification 81 h 2266_224 data dclk cs# read command identification 81 h high 'z' data byte 1 76543210 76543210 76543210 2266_225 peb 2266 pef 2266 programming overview hardware reference manual 37 2001-02-20 6 programming overview the transmission characteristics and interfaces of the peb 2266 can be adapted to various environments. configuring the functional blocks and programming the digital filter behavior is accomplished by loading values to the configuration registers and the coefficient ram (cram). software utilities are available to determine the appropriate register and cram values (see programmer?s reference manual ). 6.1 programming overview the sicofi ? 2-c has eight common configuration registers (xr0 to xr7). settings in these registers affect all two channels. each of the two channels has six channel-specific configuration registers (cr0 to cr5). settings in these registers affect only the designated channel. the filters of each channel are individually programmable through channel-specific coefficients in cram. there are two global sets of th filter coefficients that can be assigned to any channel. 6.1.1 register model channel-specific and common configuration registers and coefficients are shown in table 27 . table 27 register model configuration registers and cram channel usage xr0 to xr7 (8 bytes) common cr0 to cr5 (6 bytes) channel-specific im/r1 coefficients (16 bytes) frr, frx coefficients (16 bytes) ar1, ar2, ax1, and ax2 coefficients (8 bytes) tg1 and tg2 coefficients (8 bytes) th coefficient set 1 (24 bytes) one coefficient set per channel th coefficient set 2 (24 bytes) peb 2266 pef 2266 programming overview hardware reference manual 38 2001-02-20 6.1.2 register maps table 28 read access to common configuration register (xr) map table 29 write access to common configuration register (xr) map table 30 channel-specific configuration register (cr) map (read & write) bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 xr0 0 0 0 0 si2_1 si2_0 si1_1 si1_0 xr1 0 0 0 0 sb2_1 sb2_0 sb1_1 sb1_0 xr2 0 0 0 0 psb2_1 psb2_0 psb1_1 psb1_0 xr3 0 0 sb2_2 sb1_2 0 0 psb2_2 psb1_2 xr4 signal debounce chclk1 xr5 mclk-sel crsh-a crsh-b chclk2 version xr6 c-mode x-s r-s drv_0 shift pcm-offset xr7 of7of6of5of4of3of2of1of0 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 xr0 0 0 0 0 so2_1 so2_0 so1_1 so1_0 xr1 0 0 0 0 sb2_1 sb2_0 sb1_1 sb1_0 xr2 0 0 0 0 psb2_1 psb2_0 psb1_1 psb1_0 xr3 0 0 sb2_2 sb1_2 0 0 psb2_2 psb1_2 xr4 signal debounce chclk1 xr5 mclk-sel crsh-a crsh-b chclk2 version xr6 c-mode x-s r-s drv_0 shift pcm-offset xr7 of7of6of5of4of3of2of1of0 bit 7bit 6bit 5bit 4bit 3bit 2bit 1bit 0 cr0 th im/r1 frx frr ax ar th-sel cr1 etg2 etg1 ptg2 ptg1 law 0 0 pu cr2 cot/r 0 idr lm lmr v+t cr3 test-loops agx agr d-hpx d-hpr cr4 r-way rs6 rs5 rs4 rs3 rs2 rs1 rs0 cr5 x-way xs6 xs5 xs4 xs3 xs2 xs1 xs0 peb 2266 pef 2266 programming overview hardware reference manual 39 2001-02-20 6.1.3 cram structure coefficient ram (cram) is used to store the individual coefficients calculated for each channel. the coefficients can be written and read through the microcontroller interface. the im, frx, frr, ax, ar, tg1, tg2, and th coefficients are accessed through the coefficient operation (cop) command sequences which include the channel address (see programmer?s reference manual chapter 6.5 ). channel-specific coefficients always belong to their designated channel. common coefficients (th) can be assigned to any of the two channels through field th-sel in cr0 (see figure 25 ). figure 25 channel-specific and common coefficients table 31 coefficient ram (cram) structure per channel im part 1 8 coefficient bytes im part 2 8 coefficient bytes frx 8 coefficient bytes frr 8 coefficient bytes ax 4 coefficient bytes ar 4 coefficient bytes tg1 4 coefficient bytes tg2 4 coefficient bytes 2266_226 common coefficients channel specific coefficients set 1 th part 1, 2, 3 set 2 th part 1, 2, 3 channel 2 im part 1 & 2, frx, frr, ax, ar, tg1, tg2 channel 1 im part 1 & 2, frx, frr, ax, ar, tg1, tg2 channel specific coefficients peb 2266 pef 2266 programming overview hardware reference manual 40 2001-02-20 table 32 coefficient ram (cram) structure per set 6.2 types of commands and data bytes coefficients and register contents are programmed and accessed through command sequences via the microcontroller interface. there are three types of command sequences: e x tended op eration (xop) for access to the common configuration registers (xr0 to xr7) including the control registers for the signaling interface. s tatus op eration (sop) for access to the channel-specific registers (cr0 to cr5), e.g. enabling and disabling of filters, time slot assignment, and test loops. c oefficient op eration (cop) for access to the cram structures. coefficients can be written to the sicofi ? 2-c, and also read back. table 33 types of commands and data bytes. with the first byte received via din, a command type is selected through bits 3 and 4. a two-bit address field (ad) in the cop and sop commands allows access to the channel-specific structures (cram and cr registers). since the xr registers are common for all channels, no address field is required within the xop command byte. all three commands allow read and write access, which is indicated by bit 5 (rw). the bit fields lsel and code specify the type and the length of data that follows the command. th part 1 8 coefficient bytes th part 2 8 coefficient bytes th part 3 8 coefficient bytes 76543210 xop rst 0 rw 11 lsel sop ad rw 10 lsel cop ad rw 0 code peb 2266 pef 2266 application hints hardware reference manual 41 2001-02-20 7 application hints 7.1 support tools 7.1.1 development board the evaluation package easy 2466 includes the following hardware: one sicofi ? 2-c evaluation board stut 2466 with connectors for four optional slic daughter cards and bnc connectors to a pcm backplane. one microcontroller board evc50x with rs-232 interface that translates data from a pc to sicofi ? 2-c format. two slic babyboards stut 5502 with harris slic hc 5502 mounted. the qsicos software enables the calculation of the coefficients and the download of the setup file to the evaluation board. this setup allows measurements and optimization of the actual behavior of a complete transmission system. the easy 2466 evaluation system connects directly to industry-standard test equipment. figure 26 development system with stut 2466 evaluation board pcm in pcm out clock out 4 wire in 2 wire 4 wire out slc2 slc1 slc4 slc3 s1 out in in/ out in/ out st2 st1 sicofi2/4 -c/-te pcm pclk fsc evaluation board evc50x sw1 p4 power supply reset evc slic (stut5502) st3 com 1 dc loop-holding circuit fsc in tip ring pc sicofix -c/-te eval. board v1.4 stut 2466 pcm-4 peb 2266 pef 2266 application hints hardware reference manual 42 2001-02-20 7.2 guidelines for board design 7.2.1 filter capacitors for high frequency noise rejection, use 100 nf smd ceramic capacitors on pins v dda12 , v dda and v ddref and connect to gnda. additional 2.2 f tantalum capacitors are recommended. use one 100 nf smd ceramic capacitor on pin v ddd and connect to gndd. use a 1 f ? 10 f tantalum capacitor from +5 v supply to gnd (central blocking). note: all blocking capacitors must be placed as close as possible to the sicofi ? 2-c pins. . figure 27 sicofi ? 2-c test circuit configuration sicofi2-c peb 2266-h pclk fsc drb dxb tcb# dra dxa tca# v ddd reset# mclk gndd dout din dclk cs# nc nc v in2 gnda nc v dda nc gnda v ddref v ref gnda2 v out2 v dda12 v out1 gnda1 v in1 chclk1 int12 si1_1 si1_0 sb1_2 sb1_1 sb1_0 so1_1 so1_0 so2_0 so2_1 sb2_0 sb2_1 sb2_2 si2_0 si2_1 chclk2 nc nui nui nuio nuio nuio nc nc nc nc nuio nuio nuio nui nui 1-10f 100nf 10k pcm interface micro- controller interface signaling interface, channels 1&2 analog interface 2.2f 100nf 116 17 32 33 48 49 64 5v 5 x 680k 5 x 680k 10f 1f 2.2f 100nf 1f 220nf 2.2f 100nf 100nf 100nf 5v 5v 5v 10f 6 x 680k 5v 4.7k 5v 4.7k 2266_228 peb 2266 pef 2266 application hints hardware reference manual 43 2001-02-20 7.3 proposal for sicofi ? 2-c board design for a new layout design it is recommended to use a separate ground-layer which gives the possibilty to connect all ground-pins of the sicofi ? 2-c (gnda and gndd) low- ohmic together. furthermore, an optimum board layout should follow these recommendations separate all digital supply lines from analog supply lines as far as possible applying the standard practice regarding blocking capacitors is recommended place all slic circuits as close as possible to the vinx/voutx pins of the sicofi separate all analog circuitry (especially slic and vinx/voutx) as far as possible from any digital signal source (esp. clock signals) figure 28 proposal for a ground concept vdd is the grey colored layer and the ground-plane is the black colored layer. the ground-plane should be on both sides of the board on the top and on the ground layer. 49 51 53 52 55 56 58 57 60 62 61 64 100 nf gnd 1-10 f tantal v dd peb 2266 h ground- plane ddd gndd v 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 17 18 19 20 24 22 23 25 26 27 28 29 30 31 32 gnda2 gnda gnda v dda12 gnda1 v ddref v ref connector connector next to the connector pins 21 50 dda v ceramic nf ceramic nf 100 nf 100 nf 220 63 59 54 ceramic 100 ceramic the ground-plane should be used for shielding sicofi2-c v2.2 peb 2266 pef 2266 electrical characteristics and timing diagrams hardware reference manual 44 2001-02-20 8 electrical characteristics and timing diagrams note: stresses above those listed here may cause permanent damage to the device. exposure to absolute maximum rating conditions for extended periods may affect device reliability. 8.1 absolute maximum ratings parameter symbol limit values unit test condition min. max. v dd referred to gndd ? 0.3 7.0 v gnda to gndd ? 0.6 0.6 v analog input and output voltage referred to v dd = 5 v; referred to gnda = 0 v ? 5.3 ? 0.3 0.3 5.3 v v all digital input voltages referred to gndd = 0 v; ( v dd =5v) referred to v dd = 5 v; (gndd = 0 v) ? 0.3 ? 5.3 5.3 0.3 v v dc input and output current at any input or output pin (free from latch-up) 10 ma storage temperature t stg ? 60 125 c ambient temperature under bias t a ? 10 80 c power dissipation (package) p d 1w peb 2266 pef 2266 electrical characteristics and timing diagrams hardware reference manual 45 2001-02-20 8.2 operating range v dd = 5 v 5%; gndd = 0 v; gnda = 0 v; t a = 0 c to +70 c (pef 2266: -40 c to +85 c) parameter symbol limit values unit test condition min. typ. max. v dd supply current: i dd fsc = 8 khz, standby (peb 2266) 0.5 1.0 ma pclk = mclk = standby (pef 2266) 0.5 1.5 ma 2.048 mhz, 1 channel operating 14 25 ma no loads, 2 channels operating 18 30 ma pcm idle codes, power supply rejection ratio (either direction) psrr 30 db ripple: sine wave 1014 hz, 70 mvrms, on every supply pin, agx=agr=ax=ar=0db (see chapter 4.2.4 ) 8.3 digital interface v dd = 5 v 5%; gndd = 0 v; gnda = 0 v t a = 0 c to +70 c (pef 2266: -40 c to +85 c); parameter symbol limit values unit test condition min. max. input voltages: low level v il ? 0.3 0.8 v high level v ih 2.0 v output voltages: low level v ol 0.45 v i ol = ? 2ma low level v ol 0.8 v i ol = ? 5ma high level v oh 4.4 v i oh = 0.4 ma high level v oh 4.0 v i oh = 2 ma high level v oh 2.4 v i oh = 5 ma input leakage current v il 1a ? 0.3 v in v dd peb 2266 pef 2266 electrical characteristics and timing diagrams hardware reference manual 46 2001-02-20 8.4.1 coupling capacitors at the analog interface coupling capacitors are required on pins v in and v out . the recommended value for v in is >39 nf. the required value for the v out capacitor depends on the input impedance of the slic (see figure 16 in chapter 5.1 ). 8.5 reset timing to reset the sicofi ? 2-c to reset state, logic low pulses applied to pin reset# must be below 1.2 v (ttl-schmitt-trigger input) and must persist longer than 3 s. note: spikes shorter than 1 s will be ignored. 8.4 analog interface v dd = 5 v 5%; gndd = 0 v; gnda = 0 v; t a = 0 c to +70 c (pef 2266: -40 c to +85 c) parameter symbol limit values unit test condition min. typ. max. input resistance pef 2266 peb 2266 r i 160 160 270 270 500 380 k ? k ? 0 v in v dd output resistance r o 0.25 ? output load r l c l 300 50 ? pf input leakage current i il 0.1 1.0 a 0 v in v dd input offset voltage v io 50 mv output offset voltage v oo 50 mv input voltage range (ac) v in 2.223 v peb 2266 pef 2266 electrical characteristics and timing diagrams hardware reference manual 47 2001-02-20 8.6 pcm-interface timing 8.6.1 single clocking mode figure 29 pcm interface timing in single clocking mode parameter symbol limit values unit min. typ. max. period of pclk t pclk 1/8192 1/128 ms pclk high time t pclkh 0.4* t pclk t pclk /2 0.6* t pclk s period fsc t fsc 125 s fsc setup time t fsc_s 10 50 ns fsc hold time t fsc_h 40 50 ns dra/b setup time t dr_s 10 50 ns dra/b hold time t dr_h 10 50 ns dxa/b delay time 1) 1) min. delay times: intrinsic time, caused by internal processing. max. delay times: min. time + delay caused by external components c load and r pullup. : t c_load = 0.4ns*c load /pf, t c*r = r pullup *c load ; r pullup >1.5k ? t ddx 25 t ddx_min + t c_load ns dxa/b delay time to high z t ddxhz 25 50 ns tca#/tcb# delay time on t dtcon 25 t dtcon_min + t c_load ns tca#/tcb# delay time off t dtcoff 25 t dtcoff_min + t c*r ns 2266_229 t pclk pclk fsc dra/b dxa/b fsc_s t pclkh t high imp. t dr_s dr_h t t ddx ddxhz t t fsc_h fsc t tca#/tcb# dtcon t t dtcoff 50% peb 2266 pef 2266 electrical characteristics and timing diagrams hardware reference manual 48 2001-02-20 8.6.2 double clocking mode figure 30 pcm interface timing in double clocking mode parameter symbol limit values unit min. typ. max. period of pclk t pclk 1/8192 1/256 ms pclk high time t pclkh 0.4* t pclk t pclk /2 0.6* t pclk s period fsc t fsc 125 s fsc setup time t fsc_s 10 50 ns fsc hold time t fsc_h 40 50 ns dra/b setup time t dr_s 10 50 ns dra/b hold time t dr_h 10 50 ns dxa/b delay time 1) 1) min. delay times: intrinsic time, caused by internal processing. max. delay times: min. time + delay caused by external components c load and r pullup. : t c_load = 0.4ns*c load /pf, t c*r = r pullup *c load ; r pullup >1.5k ? t ddx 25 t ddx_min + t c_load ns dxa/b delay time to high z t ddxhz 25 50 ns tca#/tcb# delay time on t dtcon 25 t dtcon_min + t c_load ns tca#/tcb# delay time off t dtcoff 25 t dtcoff_min + t c*r ns 2266_230 t pclk pclk fsc dra/b dxa/b fsc_s t pclkh t high imp. t dr_s dr_h t t ddx ddxhz t t fsc_h fsc t tca#/tcb# dtcon t t ddtcoff 50% peb 2266 pef 2266 electrical characteristics and timing diagrams hardware reference manual 49 2001-02-20 8.7 microcontroller interface timing figure 31 timing of the microcontroller interface parameter symbol limit values unit min. typ. max. period of dclk t dclk 1/8192 ms dclk high time t dclkh 0.4* t dclk t dclk /2 0.6* t dclk s cs# setup time t cs_s 10 50 ns cs# hold time t cs_h 30 50 ns din setup time t din_s 10 50 ns din hold time t din_h 10 50 ns dout delay time 1) 1) all delay times are made up by two components: an intrinsic time (min-time), caused by internal processing, and a second component t c_load = 0.4ns*c load /pf, caused by external circuitry (c-load). t ddout 30 t ddout_min + t c_load ns dout delay time to high z t ddouthz 30 50 ns 2266_231 dclk cs# din dout cs_s t high imp. t din_s din_h t t ddout ddouthz t t dclkh dclk t t cs_h 50% peb 2266 pef 2266 electrical characteristics and timing diagrams hardware reference manual 50 2001-02-20 8.8 signaling interface timing 8.8.1 timing from the c interface to the so/sb-pins figure 32 signaling output timing (data downstream) 8.8.2 timing from the si/sb-pins to the c interface the register update and interrupt behavior resulting from signaling input changes (data upstream ? pins si and sb, if programmed as signaling inputs) depend on internal sampling clocks, counters and register settings. see chapter 5.3.2 for a functional description. parameter symbol limit values unit min. typ. max. so/sb delay time 1) 1) all delay times are made up by two components: an intrinsic time (min-time), caused by internal processing, and a second component t c_load = 0.4ns*c load /pf, caused by external circuitry (c-load). t dsout 30 t dsout_min + t c_load ns sb to ? z ? - time t dsbz 40 100 ns sb to ? drive ? -time t dsbd 40 t dsbd_min + t c_load ns dclk bit 2 din so/sb output old value new value sb (output input) output) (input sb dsbd t high imp. t dsbz t dsout high imp. bit 1 bit 0 2266_232 peb 2266 pef 2266 test modes hardware reference manual 51 2001-02-20 9test modes each sicofi ? 2-c channel has four test loops that feed the analog input signal back to the analog output (analog test loops), and five test loops that feed the pcm input signal back to the pcm output. note: the signal path can also be cut off at two different points per receive and transmit direction. 9.1 analog loops the four analog loops feed signals from the transmit path back into the receive path. figure 33 shows the locations of the analog loops. figure 33 analog loops table 34 analog loop programming in register cr3, bits 7 to 4 test-loops analog loops (cr3.7 = 0) 0000 all loops are disabled (normal operation). 0001 alb-pfi analog loop back via prefi-pofi is selected. 0011 alb-4m analog loop back via 4 mhz is selected. 0100 alb-pcm analog loop back via 8 khz (pcm) is selected and in all channels active . (required slope setting in xr6.6, xr6.5 = 00 or 11). 0101 alb-8k analog loop back via 8 khz (linear) is selected. 2266_233 receive path transmit path analog output analog input pcm input pcm output im1 th digital gain 2 digital gain 2 im2 frequency response digital gain 1 frequency response digital gain 1 hpx hpr adc dac agx agr cmp exp alb-pfi alb-4m alb-8k alb-pcm peb 2266 pef 2266 test modes hardware reference manual 52 2001-02-20 9.2 digital loops the digital loops feed signals from the receive path back to the transmit path. there are five digital loops, which are shown in figure 34 . figure 34 digital loops table 35 digital loop programming in register cr3, bits 7 to 4 test-loops digital loops (cr3.7 = 1) 1000 dlb-ana digital loop back via analog port is selected. 1001 dlb-4m digital loop back via 4 mhz is selected. 1100 dlb-128k digital loop back via 128 khz is selected. 1101 dlb-64k digital loop back via 64 khz is selected. 1111 dlb-pcm digital loop back via pcm registers is selected. receive path transmit path analog output analog input pcm input pcm output im1 th digital gain 2 digital gain 2 dlb-pcm dlb-64k dlb-ana dlb-4m im2 dlb-128k frequency response digital gain 1 frequency response digital gain 1 hpx hpr adc dac agx agr cmp exp 2266_234 peb 2266 pef 2266 test modes hardware reference manual 53 2001-02-20 9.3 cut-off ? s the transmit path and the receive path can be cut off at two locations each. figure 35 shows the locations in the signal paths. figure 35 cut-off ? s table 36 cut-off programming in register cr2, bits 7 to 5. cot/r cut-off ? s in the transmit and the receive paths 000 all cut-offs disabled (normal operation). 001 cot16 cut off transmit path at 16 khz (input of th-filter). 010 cot8 cut off transmit path at 8 khz (shortens the input of the compressor unit to ground, resulting in pcm idle codes in the transmit time slot). 101 cor4m cut off receive path at 4 mhz (pofi-output). 110 cor64 cut off receive path at 64 khz (im-filter input). 2266_235 receive path transmit path analog output analog input pcm input pcm output im1 th digital gain 2 digital gain 2 im2 frequency response digital gain 1 frequency response digital gain 1 hpx hpr adc dac agx agr cmp exp cot8 cot16 cor64 cor4m peb 2266 pef 2266 package outlines hardware reference manual 54 2001-02-20 10 package outlines p-mqfp-64 (plastic metric quad flat package) gpm05250 sorts of packing package outlines for tubes, trays etc. are contained in our data book ? package information ? . dimensions in mm smd = surface mounted device peb 2266 pef 2266 glossary hardware reference manual 55 2001-02-20 11 glossary ac a lternating c urrent adc a nalog-to- d igital c onverter cmos c omplementary m etal o xide s emiconductor cram c oefficient ram dac d igital-to- a nalog c onverter dc d irect c urrent dlc d igital l oop c arrier dsp d igital s ignal p rocessor dtmf d ual t one m ulti f requency fir f inite i mpulse r esponse fttc f iber- t o- t he- c urb iir i nfinite i mpulse r esponse iom-2 i sdn- o riented m odular 2 nd generation itu i nternational t elecommunication u nion itu-t i nternational t elecommunication u nion- t elecommunication standardization sector (formerly ccitt) pbx p rivate b ranch e x change pcm p ulse c ode m odulation pstn p ublic s witched t elephone n etwork ptt p ost t elephone t elegraph qsicos q uad si cofi co efficient s oftware ritl r adio- i n- t he- l oop rt r emote t erminal sicofi si gnal processor co dec fi lter slic s ubscriber l ine i nterface c ircuit t/r t ip/ r ing peb 2266 pef 2266 hardware reference manual 56 2001-02-20 index symbols -law . . . . . . . . . . . . . . . 2, 11, 14, 19, 30 -law mode . . . . . . . . . . . . . . . . . . 15, 22 numerics 0 dbm0-levels . . . . . . . . . . . . . . . . . . . 14 2-wire to 4-wire conversion. . . . . . . . . . 10 8-bit time slots. . . . . . . . . . . . . . . . . . . . . 2 a a/-law. . . . . . . . . . . . . . . . . . . . . . . . . . 3 a/d and d/a converters . . . . . . 11, 18, 26 a/d converters . . . . . . . . . . . . . . . . 14, 23 absolute gain . . . . . . . . . . . . . . . . . . . . 17 absolute group delay . . . . . . . . . . . . . . 18 absolute maximum ratings . . . . . . . . . . 44 ac transmission characteristics . . . . . . 27 accuracy of digital filters . . . . . . . . . 10, 11 adc . . . . . . . . . . . . . . . . . . . . . . . 2, 3, 11 a-law . . . . . . . . . . . . . . . 2, 11, 14, 19, 30 a-law mode . . . . . . . . . . . . . . . . . . . . . 15 ambient temperature . . . . . . . . . . . . . . 44 analog ground pins. . . . . . . . . . . . 8, 9, 29 analog i/o. . . . . . . . . . . . . . . . . . . . . . . . 2 analog input . . . . . . . . . . . . . . . . . . . . . 13 analog input/output pins . . . . . . . . . . . . 29 analog interface . . . . . . . . . . . . . 3, 27, 28 analog interface . . . . . . . . . . . . . . . 14, 46 analog interface pins . . . . . . . . . . . . . . 29 analog loop programming. . . . . . . . . . . 51 analog loops . . . . . . . . . . . . . . . . . . . 3, 51 analog output . . . . . . . . . . . . . . . . . . . . 13 analog supply reference voltage . . . . . . 9 analog supply voltage. . . . . . . . . . . . . . . 8 analog voice input/output . . . . . . . . . . . . 8 analog voltage levels . . . . . . . . . . . . . . 14 application hints . . . . . . . . . . . . . . . . . . 41 application notes . . . . . . . . . . . . . . . . . . 1 ar . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 architecture . . . . . . . . . . . . . . . . . . . . . . 2 attenuation . . . . . . . . . . . . . . . . . . . . . 18 ax . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 b balancing filter . . . . . . . . . . . . . . . . . . . 26 bi-directional signaling pins . . . . . . . 8, 33 blocking capacitors . . . . . . . . . . . . . . . 42 board design . . . . . . . . . . . . . . . . . . . . 42 board layout . . . . . . . . . . . . . . . . . . . . 43 byte-by-byte transfer . . . . . . . . . . . . . . 36 c ceramic capacitors . . . . . . . . . . . . . . . 42 channel operating ranges . . . . . . . . . . 45 channel-pair . . . . . . . . . . . . . . . . . . . . 33 channels . . . . . . . . . . . . . . . . . . 2, 22, 37 channel-specific coefficients . . . . . . . . 39 channel-specific registers. . . .11, 12, 37, 38 chip select . . . . . . . . . . . . . . . . . . . 6, 34 clock . . . . . . . . . . . . . . . . . 11, 32, 33, 34 clock output signals . . . . . . . . . . . . . . . 2 clock programming . . . . . . . . . . . . . . . 33 c-message . . . . . . . . . . . . . . . . . . . . . 19 codec filter . . . . . . . . . . . . . . . . . . . . . . 2 coefficient calculation & configuration software . . . . . . . . . . . . . . 3 coefficient operation (cop) command . .40 coefficient operation commands . . . . . 39 coefficient ram. . . . . . 11, 34, 35, 37, 39 command sequences . . . . . . . . . . 36, 40 command type . . . . . . . . . . . . . . . . . . 40 commands . . . . . . . . . . . . . . . . . . . . . 35 common configuration registers . . . 11, 37, 38 compression . . . . . . . . . . . . . . . . . . . . . 3 compressor . . . . . . . . . . . . . . . . . . . . . 11 configuration of interfaces. . . . . . . . . . 27 configuration registers . . . . . . . . . 35, 37 control data input/output pins . . . . . . . 34 peb 2266 pef 2266 hardware reference manual 57 2001-02-20 control data input/output pins. . . . . . . . 34 conversion utilities . . . . . . . . . . . . . . . . 41 cop . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 cop command sequences. . . . . . . . . . 39 country-specific adaptations . . . . . . . . 10 coupling capacitors . . . . . . . . . 27, 29, 46 cr0 to cr5 . . . . . . . . . . . . . . . . . . . . . 37 cr0 to cr7 . . . . . . . . . . . . . . . . . . . . . 38 cram . . . . . . . . . . . 11, 34, 35, 37, 39, 40 cram structure . . . . . . . . . . . . . . . . . . 39 crosstalk. . . . . . . . . . . . . . . . . . . . . . . . 22 cr-registers . . . . . . . . . . . . . . . . . . . . 11 cs#. . . . . . . . . . . . . . . . . . . . . . . . . 34, 49 cut-off programming . . . . . . . . . . . . . . 53 cut-off ? s . . . . . . . . . . . . . . . . . . . . . . . . 53 d dac . . . . . . . . . . . . . . . . . . . . . . . 2, 3, 11 data bytes. . . . . . . . . . . . . . . . . . . . . . . 35 data clock . . . . . . . . . . . . . . . . . . . . . . . 6 data clock . . . . . . . . . . . . . . . . . . . . . . . 34 data input pins . . . . . . . . . . . . . . . . . . . . 6 data output pins . . . . . . . . . . . . . . . . . . . 6 data pins. . . . . . . . . . . . . . . . . . . . . . . . 34 data rates . . . . . . . . . . . . . . . . . . 3, 11, 30 data receive pins . . . . . . . . . . . . . . . . . . 7 data transmit pins. . . . . . . . . . . . . . . . . . 7 dclk . . . . . . . . . . . . . . . . . . . . . . . . . . 49 debouncing functions . . . . . . . . . . . 32, 33 decimation . . . . . . . . . . . . . . . . . . . . . . 11 detect specific tones. . . . . . . . . . . . . . . 10 development boards. . . . . . . . . . . . . 3, 41 digital filters . . . . . . . . . . . . . . . . . . . . . . 3 digital ground pins . . . . . . . . . . . . . . . . . 6 digital input . . . . . . . . . . . . . . . . . . . . . . 13 digital interface . . . . . . . . . . . . . . . . . . . 45 digital loop programming . . . . . . . . . . . 52 digital loops . . . . . . . . . . . . . . . . . . . 3, 52 digital output. . . . . . . . . . . . . . . . . . . . . 13 digital supply voltage . . . . . . . . . . . . . . . 7 digital switching & transmission system . . . . 2 digital, programmable filters . . . . . . . . 10 din . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 dlc . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 double clocking mode timing. . . . . . . . 48 dout . . . . . . . . . . . . . . . . . . . . . . . . . 49 driving capability . . . . . . . . . . . . . . . 3, 27 dsp core . . . . . . . . . . . . . . . . 2, 3, 10, 11 dtmf. . . . . . . . . . . . . . . . . . . . . . . . . . . 3 dynamic gain. . . . . . . . . . . . . . . . . . . . . 3 dynamic range . . . . . . . . . . . . . . . . . . 11 e easy 2466 . . . . . . . . . . . . . . . . . . . 3, 41 easy 2466 evaluation system . . . . . . 41 echo . . . . . . . . . . . . . . . . . . . . . . . . . . 26 electrical characteristics . . . . . . . . . . . 44 evaluation boards . . . . . . . . . . . . . . . . 41 evc50x . . . . . . . . . . . . . . . . . . . . . . . . 41 expander . . . . . . . . . . . . . . . . . . . . . . . 11 expansion . . . . . . . . . . . . . . . . . . . . . . . 3 extended operation (xop) command . . .40 extended temperature range. . . . . . . . . 2 external amplifier. . . . . . . . . . . . . . . . . 27 external components. . . . . . . . . . . . . . 26 f fiber-to-the-curb systems . . . . . . . . . . 4 filter capacitors . . . . . . . . . . . . . . . . . . 42 filter characteristics. . . . . . . . . . . . . . . 10 filter coefficients . . . . . . . . . . . . . . . . . 27 filter coefficients storage. . . . . . . . . . . 11 filter structures . . . . . . . . . . . . . . . . . . 11 flow diagram . . . . . . . . . . . . . . . . . . . . 16 fluctuation . . . . . . . . . . . . . . . . . . . . . . 10 four-wire interface. . . . . . . . . . . . . . . . 10 frame . . . . . . . . . . . . . . . . . . . . . . . . . 30 frame delay. . . . . . . . . . . . . . . . . . . . . 30 frame synchronization clock . . . . . . 7, 30 frequency correction. . . . . . . . . . . . . . 11 frequency response . . . . . . . . . 3, 18, 27 peb 2266 pef 2266 hardware reference manual 58 2001-02-20 frequency response corrections . . 10, 16 frr . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 frx. . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 fsc. . . . . . . . . . . . . . . . . . . . . . . . . 47, 48 functional blocks . . . . . . . . . . . . . . . . . 37 g gain . . . . . . . . . . . . . . . . . . . . . . . . 15, 26 gain accuracy. . . . . . . . . . . . . . . . . . . . 17 gain deviations with input level . . . . . . 17 gain tracking. . . . . . . . . . . . . . . . . . . . . 17 ground layer . . . . . . . . . . . . . . . . . . . . . 43 ground pins . . . . . . . . . . . . . . . . . . . . . 43 ground plane . . . . . . . . . . . . . . . . . . . . 43 ground-key detection . . . . . . . . . . . . . . 10 group delay . . . . . . . . . . . . . . . . . . 18, 26 group delay absolute values . . . . . . . . 18 group delay distortion. . . . . . . . . . . . . . 19 h hardware filters. . . . . . . . . . . . . . . . 11, 23 hardware reset . . . . . . . . . . . . . . . . . . . 12 harmonic distortion. . . . . . . . . . . . . . . . 20 high impedance state . . . . . . . . . . . . . . 34 highway . . . . . . . . . . . . . . . . . . . . . . . . 11 hw-reset . . . . . . . . . . . . . . . . . . . . . . . 12 i i/o pins . . . . . . . . . . . . . . . . . . . . . . . . . 32 identification byte . . . . . . . . . . . . . . . . . 35 idle channel noise. . . . . . . . . . . . . . . . . 19 im-filter . . . . . . . . . . . . . . . . . . . . . . 26, 39 impedance matching . . . . . . 3, 10, 11, 16 independent filter structures . . . . . . . . . . 2 industry ? standard pcm interface . . . . . 30 input impedance . . . . . . . . . . . . 10, 29, 46 input leakage current . . . . . . . . . . . 45, 46 input offset voltage . . . . . . . . . . . . . . . . 46 input pins . . . . . . . . . . . . . . . . . . . . 12, 32 input resistance . . . . . . . . . . . . . . . 27, 46 input voltage range (ac) . . . . . . . . . . . 46 input voltages . . . . . . . . . . . . . . . . . . . 45 int12. . . . . . . . . . . . . . . . . . . . . . . . . . 33 interface description . . . . . . . . . . . . . . 27 interfaces. . . . . . . . . . . . . . . . . . . . . . . 37 intermodulation . . . . . . . . . . . . . . . . . . 20 intermodulation distortion . . . . . . . . . . 20 internal registers . . . . . . . . . . . . . . . . . 34 interpolation. . . . . . . . . . . . . . . . . . . . . 11 interrupt generation . . . . . . . . . . . . . . . 33 interrupt output pins. . . . . . . . . . . . . . . 33 interrupt pins . . . . . . . . . . . . . . . . . . . . 32 interrupts . . . . . . . . . . . . . . . . . . . . . . . . 8 inventory costs . . . . . . . . . . . . . . . . . . . 4 itu-t . . . . . . . . . . . . . . . . . . . . . 3, 14, 16 k key systems . . . . . . . . . . . . . . . . . . . . . 4 l level adjustments . . . . . . . . . . . . . 10, 11 level metering . . . . . . . . . . . . . . . . . 3, 10 line characterization . . . . . . . . . . . . . . 10 linearity . . . . . . . . . . . . . . . . . . . . . . 3, 11 linecard functions . . . . . . . . . . . . . . . . 10 load capacities . . . . . . . . . . . . . . . . . . 14 local requirements . . . . . . . . . . . . . . . 10 loop filters . . . . . . . . . . . . . . . . . . . . . . 10 m manufacturing test . . . . . . . . . . . . . . . . . 3 master clock . . . . . . . . . . . . . . . . . . 7, 33 maximum signal levels . . . . . . . . . . . . 14 measurements. . . . . . . . . . . . . . . . . . . 41 microcontroller . . . . . . . . . . . . . . . . . . . 10 microcontroller interface . . 10, 34, 39, 40 microcontroller interface timing . . . . . . 49 microcontrollers . . . . . . . . . . . . . . . . . . 27 peb 2266 pef 2266 hardware reference manual 59 2001-02-20 n noise. . . . . . . . . . . . . . . . . . . . . . . . . . . 19 noise rejection . . . . . . . . . . . . . . . . . . . 42 non usable input. . . . . . . . . . . . . . . . . . . 6 non usable input/output . . . . . . . . . . . . . 6 not connected pins . . . . . . . . . . . . . . . 6, 9 o on-/off-hook detection . . . . . . . . . . . . . 10 operating conditions. . . . . . . . . . . . . . . 16 operating range . . . . . . . . . . . . . . . . . . 45 operating state . . . . . . . . . . . . . . . . 12, 13 operating states . . . . . . . . . . . . . . . . . . 12 operation of interfaces . . . . . . . . . . . . . 27 operational description. . . . . . . . . . . . . 12 optimization . . . . . . . . . . . . . . . . . . . . . 41 out-of-band discrimination . . . . . . . 23, 24 out-of-band idle channel noise. . . . . . . 25 out-of-band signals . . . . . . . . . 23, 24, 27 output load . . . . . . . . . . . . . . . . . . . . . . 46 output offset voltage. . . . . . . . . . . . . . . 46 output resistance . . . . . . . . . . . . . . . . . 46 output voltages. . . . . . . . . . . . . . . . . . . 45 overload compression . . . . . . . . . . . . . 22 overload point . . . . . . . . . . . . . 14, 22, 27 oversampling . . . . . . . . . . . . . . . . . . . . 11 p package . . . . . . . . . . . . . . . . . . . . . . . . . 3 package outlines . . . . . . . . . . . . . . . . . 54 pair-gain systems . . . . . . . . . . . . . . . . . 4 pclk . . . . . . . . . . . . . . . . . . . . . . . 47, 48 pcm clock. . . . . . . . . . . . . . . . . . . . . . . 30 pcm data clock. . . . . . . . . . . . . . . . . . . . 7 pcm data format. . . . . . . . . . . . . . . . . . 30 pcm highway a . . . . . . . . . . . . . . . . . . . 7 pcm highway b . . . . . . . . . . . . . . . . . . . 7 pcm highways . . . . . . . . . . . . 2, 3, 27, 30 pcm interface . . . . . . . . . . . . . . . 3, 14, 27 pcm interface pins . . . . . . . . . . . . . . . . 30 pcm interface timing . . . . . . . . . . . 47, 48 pcm ports . . . . . . . . . . . . . . . . . . . . . . 11 peak amplitude . . . . . . . . . . . . . . . 14, 27 peb 2466 . . . . . . . . . . . . . . . . . . . . . . . 1 pin configuration . . . . . . . . . . . . . . . . . . 5 pin definitions and functions . . . . . . . . . 6 pin descriptions . . . . . . . . . . . . . . . . . . . 5 pin diagram . . . . . . . . . . . . . . . . . . . . . . 5 pll . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 power dissipation . . . . . . . . . . . . . 12, 13 power dissipation (package) . . . . . . . . 44 power on. . . . . . . . . . . . . . . . . . . . . . . 12 power spectral density . . . . . . . . . . . . 25 power supply rejection ratio . . . . . . . . 45 power-saving state . . . . . . . . . . . . . . . 12 power-up state . . . . . . . . . . . . . . . . 33 product brief . . . . . . . . . . . . . . . . . . . . . 1 product overview . . . . . . . . . . . . . . . . . 1 programmable debouncing . . . . . . . . . . 3 programmable digital filters . . . . . . . . . . 3 programmable filters . . . . . . . . . . . . . . 26 programmable frequency . . . . . . . . . . 13 programmable tone generators. . . . . . . 3 programmer ? s reference manual . . . . . 1 programming overview . . . . . . . . . . . . 37 psb 2132 . . . . . . . . . . . . . . . . . . . . . . . 1 psb 2134 . . . . . . . . . . . . . . . . . . . . . . . 1 psophometric. . . . . . . . . . . . . . . . . . . . 19 q qsicos. . . . . . . . . . . . . . . . . . . . . . 3, 41 r radio-in-the-loop systems . . . . . . . . . . 4 read access . . . . . . . . . . . . . . . . . 35, 38 read commands . . . . . . . . . . . . . . 35, 36 receive data input pins . . . . . . . . . . . . 30 receive delay . . . . . . . . . . . . . . . . . . . 18 receive path . . . . . . . . . . . 10, 51, 52, 53 reference voltage pin . . . . . . . . . . . 9, 29 peb 2266 pef 2266 hardware reference manual 60 2001-02-20 register maps. . . . . . . . . . . . . . . . . . . . 38 register model . . . . . . . . . . . . . . . . . . . 37 register values . . . . . . . . . . . . . . . . . . . 13 registers. . . . . . . . . . . . . . . . . . . . . . . . 11 reset . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 reset state . . . . . . . . . . . . . . . . 12, 13, 46 reset timing . . . . . . . . . . . . . . . . . . . . . 46 reset# . . . . . . . . . . . . . . . . . . . . . . . . 12 reset# pin . . . . . . . . . . . . . . . . . . . . . 46 resolution. . . . . . . . . . . . . . . . . . . . . . . 11 return loss . . . . . . . . . . . . . . . . . . . . . . 10 ring signals . . . . . . . . . . . . . . . . . . . . . 10 ritl . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 rst. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 s sampling. . . . . . . . . . . . . . . . . . . . . . . . 34 sampling intervals . . . . . . . . . . . . . . . . 33 sampling slopes . . . . . . . . . . . . . . . . . . 30 schmitt-trigger input . . . . . . . . . . . . . . 46 serial input . . . . . . . . . . . . . . . . . . . . . . 13 serial interface . . . . . . . . . . . . . . . . . . . . 2 serial microcontroller interface . . 10, 27, 34 serial output . . . . . . . . . . . . . . . . . . . . . 13 sigma-delta. . . . . . . . . . . . . . . . . . . . . . 11 signal levels . . . . . . . . . . . . . . . . . . . 3, 15 signal paths . . . . . . . . . . . . . . . . . . . . . 53 signal power transfer . . . . . . . . . . . . . . 10 signal processor . . . . . . . . . . . . . . . . . . 10 signal reflections . . . . . . . . . . . . . . . . . 10 signal rejection . . . . . . . . . . . . . . . . . . . 23 signaling example . . . . . . . . . . . . . . . . 32 signaling input pins. . . . . . . . . . . . . . 8, 33 signaling input/output pins . . . . . . . . . . 11 signaling interface . . . . . . . . . . 10, 27, 32 signaling interface pins . . . . . . . . . . . . 33 signaling interface timing . . . . . . . . . . . 50 signaling output pins . . . . . . . . . . . . 8, 33 signaling output timing . . . . . . . . . . . . . 50 signaling pins . . . . . . . . . . . . . . . . . . 2, 32 signaling registers . . . . . . . . . . . . . . . . 33 signaling status changes. . . . . . . . . . . 32 signal-to-noise performance . . . . . . . . 11 signal-to-total distortion ratio. . . . . 20, 21 sine wave signal . . . . . . . . . . . . . . . . . 14 single clocking mode timing . . . . . . . . 47 single frequency distortion . . . . . . . . . 22 slic. . . . . . . . . . . . . . 2, 3, 10, 16, 26, 27 slic daughter cards . . . . . . . . . . . . . . 41 slic interfaces . . . . . . . . . . . . . . . . . . 33 sop . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 specifications . . . . . . . . . . . . . . . . . . . 16 spikes . . . . . . . . . . . . . . . . . . . . . . . . . 46 standard temperature range . . . . . . . . . 2 standby operating range . . . . . . . . . . . 45 standby state. . . . . . . . . . . . . . . . . 12, 13 state diagram . . . . . . . . . . . . . . . . . . . 12 states . . . . . . . . . . . . . . . . . . . . . . 12, 13 status operation (sop) command . . . 40 storage temperature . . . . . . . . . . . . . . 44 subscriber line interface circuits . . . 2, 10, 27 subscriber lines . . . . . . . . . . . . . . . . . . 32 supervision and signaling functions . . 32 supply current . . . . . . . . . . . . . . . . . . . 45 supply voltage . . . . . . . . . . . . . . . . . . . . 3 supply voltage pins . . . . . . . . . . . . . . . 29 support tools . . . . . . . . . . . . . . . . . . 3, 41 sw-reset . . . . . . . . . . . . . . . . . . . . . . 12 system diagnostics . . . . . . . . . . . . . . . . 3 system tests . . . . . . . . . . . . . . . . . . . . . 3 t tantalum capacitors . . . . . . . . . . . . . . 42 telco specification . . . . . . . . . . . . . . . . 27 telephone line . . . . . . . . . . . . . . . . . . . 27 telephone linecard . . . . . . . . . . . . . . . 10 telephone subscriber loop . . . . . . . . . 10 teletax filters . . . . . . . . . . . . . . . . . . . . 27 teletax pulses . . . . . . . . . . . . . . . . 23, 27 test circuit . . . . . . . . . . . . . . . . . . . . . . 42 test conditions . . . . . . . . . . . . . . . . . . 16 test loops . . . . . . . . . . . . . . . . . . . 26, 51 peb 2266 pef 2266 hardware reference manual 61 2001-02-20 test modes . . . . . . . . . . . . . . . . . . . . . . 51 test relays . . . . . . . . . . . . . . . . . . . . . . 10 tg1 and tg2 . . . . . . . . . . . . . . . . . . . . 39 th-filter . . . . . . . . . . . . . . . . . . . . . . 37, 39 three-wire access . . . . . . . . . . . . . . . . 36 time slot assignment . . . . . . . . . . . . 3, 11 time slots . . . . . . . . . . . . . . . . . . . . . 2, 30 time to market . . . . . . . . . . . . . . . . . . . . 4 timing . . . . . . . . . . . . . . . . . . . . 47, 49, 50 timing diagrams . . . . . . . . . . . . . . . . . . 44 tip & ring . . . . . . . . . . . . . . . . . . . . . . . 27 tone generators . . . . . . . . . . . . . . . . 3, 10 tool package . . . . . . . . . . . . . . . . . . . . 41 total distortion receive/transmit . . . 20, 21 total gain calculation . . . . . . . . . . . . . . 15 transfer functions . . . . . . . . . . . . . . . . . 27 transformer . . . . . . . . . . . . . . . . 3, 10, 27 transformer slic . . . . . . . . . . . . . . . . . 27 transhybrid balancing . . 3, 10, 11, 16, 26 transhybrid loss . . . . . . . . . . . . . . . 10, 26 transmission characteristics. . . 10, 14, 16, 37 transmission system . . . . . . . . . . . . . . 41 transmit control output pins . . . . . . . . . 30 transmit control pins . . . . . . . . . . . . . . . 7 transmit data output pins . . . . . . . . . . . 30 transmit delay . . . . . . . . . . . . . . . . . . . 18 transmit path . . . . . . . . . . . 10, 51, 52, 53 two-wire interface . . . . . . . . . . . . . . . . 10 types of commands . . . . . . . . . . . . . . . 40 v vin-pins . . . . . . . . . . . . . . . . . . . . . . . . 27 voice channels . . . . . . . . . . . . . . . . . . . 11 voltage levels . . . . . . . . . . . . . . . . . . . . 12 vout-pins . . . . . . . . . . . . . . . . . . . . . . 27 w waiting time . . . . . . . . . . . . . . . . . . . . . 36 website. . . . . . . . . . . . . . . . . . . . . . . . . . 1 write access . . . . . . . . . . . . . . . . . . 35, 38 write commands . . . . . . . . . . . . . . 35, 36 x xop . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 xr0 to xr7 . . . . . . . . . . . . . . . . . . . . . 38 xr-registers . . . . . . . . . . . . . . . . . . . . 11 http://www.infineon.com published by infineon technologies ag infineon goes for business excellence ? business excellence means intelligent approaches and clearly defined processes, which are both constantly under review and ultimately lead to good operating results. better operating results and business excellence mean less idleness and wastefulness for all of us, more professional success, more accurate information, a better overview and, thereby, less frustration and more satisfaction. ? dr. ulrich schumacher |
Price & Availability of PEB2266-H
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |