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best usb audio single chip for pc speakers solution cm102-a+/102s+ usb 2ch audio controller for speaker datasheet version 1.01 c-media electronics inc. tel: 886-2-8773-1100 fax: 886-2-8773-2211 6f, 100, sec. 4, civil boulevard, taipei, taiwan 106, r.o.c. for detailed product information, please contact sales@cmedia.com.tw 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 2 - notices this document is provided ?as is? with no warranties what so ever, including any warranty of merchant abi lity, noninfringement, fitness for any particular purpose, or any warranty otherwise arising out of any proposal, document or sample. all rights reserved. no part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, including information storage and retrieval systems, without permission in writing from c-media electronics, inc. u copyright copyright (c) 2005-2007 c-media electronics inc. all rights reserved. all content included on this document, such as text, graphics, logos, button icons, images, audio clips, digital downloads, data compilations, and software, is either the exclusive property of c-media electronics inc., its affiliates (collectively, "c-media"), its content suppliers, or its licensors and protected by repub lic of china and international copyright laws. u trademarks c-media, the c-media logo, xear 3d, xear 3d logo, speaker shifter, smart jack, and smart audio jack are trademarks of c -media electronics inc. in r epublic of china and/or other countries. all other brand and product names listed are trademarks or regist ered trademarks of their respective holders and are hereby recognized as such. *c-media reserves the right to modify th e specifications without further notice* 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 3 - table of contents 1. descriptions and overview 5 2. features 6 3. pin/signal descriptions 7 3.1 pin assignment by pin number 7 3.2 pin-out diagram 7 3.3 pin signal descriptions 8 4. block diagram 10 5. ordering information 11 6. function descriptions 12 6.1 usb interface 12 6.1.1 device descriptor 12 6.1.2 configuration descriptor 13 6.1.3 usb audio topology diagram 13 6.2 dynamic range contro l (drc) 14 7. electrical characteristics 15 7.1 absolute maximum rating 15 7.2 operation conditions 15 7.3 sperker impedance v.s. output power (per channel) 16 7.4 audio performance 16 8. audio performance curves 18 8.1 frequency response (10k ohm loading) 18 8.1.1 frequency response @ 44.1 ks/sec 18 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 4 - 8.1.2 frequency response @ 48 ks/sec 18 8.2 passband ripple (10k ohm loading) 19 8.2.1 passband ripple @ 44.1 ks/sec 19 8.2.2 passband ripple @ 48 ks/sec 19 9. reference application circuit 20 10. reference 20 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 5 - 1. descriptions and overview cm102-a+/102s+ series is a highly integrated si ngle chip for usb stereo speakers application. minimum external components are needed for build ing an usb speaker system, which makes cm102-a+/102s+ a simple and very cost-effective solution. since no driver is necessary for audio playback on all major os. cm102-a+/102s+ pr ovides a truly plug-and-play feature for external digital audio playback. for energy saving, usb suspend mode and resu me is supported by cm102-a+/102s+. with power amplifier enable pin and vo lume control vr input pin, a traditional speaker front panel design can be built. this new single chip not only support 44.1khz and 48khz sampling rate playback but also with x2 modulation for hi-frequen cy quality. better yet, simplify anti-pop noise solution was embedded on chip fo r general pop noise issues. all of the functions have been approved by usb if certification program. more flexible and cust omized design is possible with gpio pin, which is accessible by usb vendor specific request. this one chip solution not only embedded usb transceiver, adc, dac component but also integrated digital control power amplifier function for usb digital sound application. the dynamic range control function can support high efficiency volume output to get loudness sound effect similar d class amplifier capability. vender can just using single chip to saving external amplifier component and getting a better listen experience when listen to a music source with wide dynamic range. moreover, customers can use c-m edia usb audio driver with xear 3d functions to show up digital speaker features and upgrade pc multi-m edia stereo function to be a ce like devices. xear 3d can support 10 band equalizer, envir onmentfx sound effects and virtual 7.1ch speaker shifter. this driver is optional for free bundle. best usb audio chip for digital stereo speakers solution 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 6 - 2. features usb 2.0 full speed compatible and usb if certification usb audio device class specification v1.0 compatible usb bus powered 500ma operati on with suspend mode support usb audio function topol ogy has 1 input terminal, 1 outp ut terminal, and 1 feature unit embedded high performance 16 bit stereo audio dac embedded digital control power amplifier for speaker driving embedded power on reset block and power amplifier enable / disable control pin embedded x2 modulation for higher audio quality embedded anti-pop circuit with internal feedback structure embedded 5v to 3.3v regulator with voltage level detector for single 5v external power supply alternate zero bandwidth setting for rel easing bandwidth on usb bus during inactive operation single 12mhz crystal input with on- chip pll and embedded usb transceiver support dynamic range contro l (drc) feature to provi de a better listen experience volume control input with si mple external vr circuit isochroous transfer using adaptive synchronization with internal pll high performance 16-bit stereo, 48 / 44.1 khz sampling rate for audio playback 3.3v io with 5v tolerance; 3.3v core logics design gpio pin for application specific usage support s/pdif output interface led indicator pin during playback compatible with win 98se / win me / win 2000 / win xp, and mac os 9 / os x without additional driver usb software drive xear 3d sound technology with hrtf 3d, eax tm , speake r shifter and virtual 7.1ch effects for free bundle compact 18 pin pdip and sop package 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 7 - 3. pin/signal descriptions 3.1 pin assignment by pin number pin # signal name pin # signal name 1 paen 10 test 2 gpio 11 vref 3 xo 12 voladj 4 xi 13 avdd 5 dvdd5v 14 lol 6 regv 15 lor 7 usbdp 16 avss 8 usbdm 17 spdifo 9 dvss 18 pdsw 3.2 pin-out diagram 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 8 - 3.3 pin signal descriptions pin # symbol type description 1 paen di, st power amplifier control input, connect to a switch or pull-high in normal operation. h: enable power amplifier (normal mode) l: disable power amplifier 2 gpio dio, 8ma, st, sr, pd gpio pin, controlled via vender specific command 3 xo ao output pin for 12mhz oscillator 4 xi ai input pin for 12mhz oscillator 5 dvdd5v p 5v power supply 6 regv ao regulator output 3.3v 7 usbdp aio usb data d+ 8 usbdm aio usb data d- 9 dvss p digital ground 10 test di, st, pd test mode select pin, pull- down in normal operation 11 vref ao connecting to external decoupling capacitor for embedded bandgap circuit; 2.25v output 12 voladj ai analog volume control input from external vr circuit. 0 ~ 2.25v: +12 db ~ 3 db / mute 3.5 ~ 5v: 0 db 13 avdd p 5v power supply for analog circuit 14 lol ao line out left channel 15 lor ao line out right channel 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 9 - 16 avss p analog ground 17 spdifo do, 8ma, sr s/pdif data output 18 pdsw do, 8ma, sr power down switch control signal output 1: normal mode 0: power down mode (suspend mode) *note u :di / do / dio ? digital input / output / bi-directional pad ai / ao / aio ? analog input / output / bi-directional pad p ? power pin sr ? slew rate control st ? schmitt trigger pd / pu ? pull down / pull up 5vt ? 5 volt tolerant (3.3v pad) 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 10 - 4. block diagram block diagram of cm102-a+/102s+ 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 11 - 5. ordering information model number package operating ambient temperature supply range 18-pin pdip 0 o c to +70 o c dvdd = 5v, avdd = 5v cm102-a+/102s+ 18-pin sop 0 o c to +70 o c dvdd = 5v, avdd = 5v outline of dimensions dimensions shown in inches and (mm) 18- plastic dual-in-line packaging (pdip) 18- pin sop mechanical dimension of cm102-a+ mechanical dimension of cm102s+ 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 12 - 6. function descriptions 6.1 usb interface 6.1.1 device descriptor offset field size value (hex) description 0 blength 1 12 total 18 bytes 1 bdescriptortype 1 01 device descriptor 2 bcdusb 2 0110 usb 1.1 compliant. 4 bdeviceclass 1 00 5 bdevicesubclass 1 00 6 bdeviceprotocol 1 00 7 bmaxpacketsize0 1 08 endpoint zero size = 8 bytes 8 idvendor 2 0d8c vendor id 10 idproduct 2 0103 product id 12 bcddevice 2 0010 device release number 14 imanufacturer 1 01 index of string descriptor describing manufacturer -> ? c-media inc. ? 15 iproduct 1 02 index of string descriptor describing product -> " c-media usb audio " 16 iserialnumber 1 00 index of string descriptor describing the device?s serial number 17 bnumconfigurations 1 01 configurations number = 1 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 13 - 6.1.2 configuration descriptor offset field size value (hex) description 0 blength 1 09 to ta l 9 b y t e s 1 bdescriptortype 1 02 configuration descriptor 2 wtotallength 2 008d total length of data returned for this configuration. 4 bnuminterfaces 1 03 number of interfaces supported by this configuration. 5 bconfigurationvalue 1 01 6 iconfiguration 1 00 7 bmattributes 1 80 self-powered without remote wakeup 8 bmaxpower 2 fa maximum power consumption of the usb. 0xfa=500 ma 6.1.3 usb audio topology diagram usb streaming id = 01 feature unit (volume) (mute) id = 0d speaker id = 03 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 14 - 6.2 dynamic range control (drc) cm102-a+/102s+ include a new feature called dynamic r ange control (drc), and with a default on setting (users can still turn it off within the windows audio advance control panel) dynamic range is defined as the difference, in decibels (db), between the loudest and quietest sounds in any particular piece of audi o content. classical music is a good example, with ranges from piano (soft) to forte to fff (for extremely loud) . movies also typically have a wide dynamic range, which may cause you to have to turn the volume up and down as scenes change. for example, when watching a movie at home, you may be forced to turn up volume to hear the dialog in a quiet scene, and then quickly turn it down again during a car chase scene that follows. in this way, t here may be times in a home theater environment when it would be useful to be abl e to control the dynamic range. with dynamic range control enabled, the full dy namic range (a) of the program is reduced (b). +10db 0db -10db -20db -30db -40db -50db -60db +20db lower levels raised peaks reduced a b drc peaks reduced lower levels raised peaks clipped lower levels hard to heard a b 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 15 - 7. electrical characteristics 7.1 absolute maximum rating symbol parameter value unit dvmin min digital supply voltage ? 0.3 v dvmax max digital supply voltage + 6 v avmin min analog supply voltage ? 0.3 v avmax max analog supply voltage + 6 v dvinout voltage on any digital input or output pin ?0.3 to +5.5 v avinout voltage on any analog input or output pin ?0.3 to +5.5 v t b stg b storage temperature range -40 to +125 p 0 p c esd (hbm) esd human body mode 2000 v esd (mm) esd machine mode 200 v latchup latch up test 200 ma 7.2 operation conditions min typ max unit analog supply voltage 4.5 5.0 5.5 v digital supply voltage 4.5 5.0 5.5 v total power consumption - - 500 ma suspend mode power consumption - - 320 ua operating ambient temperature 0 - 70 p o p c 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 16 - 7.3 sperker impedance vs. output power (per channel) loading (ohm) items 4 ohm 8 ohm 32 ohm 10k ohm vpp 3.14 3.4 3.635 3.722 vrms 1.11 1.202 1.285 1.316 w(rms/sin wave) 308 mw 181 mw 52 mw 0.17 mw w(rms/square wave) 616 mw 361 mw 103 mw 0.35 mw w(pmpo) 2460 mw 1450 mw 410 mw 1 mw *note1 : test condition @ 25 o c, 5 volt +- 10% *note2 : typical output with thd+n < 1%; maximal output with thd+n < 10% 7.4 audio performance min typ max unit resolution -- 16 -- bits frequency response @ 48khz 20 -- 20k hz frequency response @ 44.1khz 20 -- 20k hz passband ripple @ 48 khz 40 -- 9.6k hz passband ripple @ 44.1 khz 40 -- 8.8k hz dac (10k ohm loading) snr -- 97.75 -- db dynamic range -- 96.27 -- db thd + n -- -67.97 -- db output voltage (rms) - 1.316 - vrms 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 17 - dac (32 ohm loading) snr -- 97.68 -- db dynamic range -- 95.99 -- db thd + n -- -57.82 -- db output voltage (rms) - 1.285 - vrms dac (8 ohm loading) snr -- 97.67 -- db dynamic range -- 96.03 -- db thd + n -- -53.28 -- db output voltage (rms) - 1.202 - vrms dac (4 ohm loading) snr -- 97.45 -- db dynamic range -- 95.89 -- db thd + n -- -52.76 -- db output voltage (rms) - 1.11 - vrms 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 18 - 8. audio performance curves 8.1 frequency response (10k ohm loading) 8.1.1frequency response @ 44.1 ks/sec c-media 05/31/05 14:10:33 digital playback (pc-d-a) for line output frequency response wl-multitone-44k.at2c color sweep trace line style thick data axis com ment 1 1 cyan solid 3 fasttest.ch.1 ampl!norm alize left 1 2 yellow solid 3 fasttest.ch.2 ampl!norm alize left -6 +1 -5 -4 -3 -2 -1 +0 d b r a 20 10k 50 100 200 500 1k 2k 5k hz 8.1.2 frequency response @ 48 ks/sec c-media 05/31/05 14:07:22 digital playback (pc-d-a) for line output frequency response wl-multitone-48k.at2c color sweep trace line style thick data axis com ment 1 1 cyan solid 3 fasttest.ch.1 ampl!normalize left 1 2 yellow solid 3 fasttest.ch.2 ampl!normalize left -6 +1 -5 -4 -3 -2 -1 +0 d b r a 30 10k 50 100 200 500 1k 2k 5k hz 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 19 - 8.2 passband ripple (10k ohm loading) 8.2.1 passband ripple @ 44.1 ks/sec c-media 05/31/05 14:11:07 digital playback (pc-d-a) for line output passband ripple @44.1ks/sec wl-passbandripple-m44k.at2c color sweep trace line style thick data axis comment 1 1 cyan solid 3 fasttest.ch.1 ampl!normalize left 1 2 yellow solid 3 fasttest.ch.2 ampl!normalize left -0.4 +0.4 -0.2 -0 +0.2 d b 40 8k 50 100 200 500 1k 2k 5k hz 8.2.2 passband ripple @ 48 ks/sec c-media 05/31/05 14:09:08 digital playback (pc-d-a) for line output passband ripple @48ks/sec wl-passbandripple-m48k.at2c color sweep trace line style thick data axis comment 1 1 cyan solid 3 fasttest.ch.1 ampl!normalize left 1 2 yellow solid 3 fasttest.ch.2 am pl!norm alize left -0.4 +0.4 -0.2 -0 +0.2 d b 40 9k 50 100 200 500 1k 2k 5k hz 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 20 - 9. reference application circuit 4 .com u datasheet
cm102-a+/102s+ usb stereo audio chip for speaker integrated date: 09/25/2005 version: 1.01 - 21 - 10. reference ? universal serial bus specification, version 2.0 ? universal serial bus device class defini tion for audio devices, version 1.0. ? universal serial bus device cl ass definition for human inte rface devices (hid), version 1.11 end of specifications c-media electronics inc. 6f., 100, sec. 4, civil boulevard, taipei, taiwan 106 r.o.c. tel:886-2-8773-1100 fax:886-2-8773-2211 e-mail sales@cmedia.com.tw url http://www.cmedia.com.tw 4 .com u datasheet

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