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high definition audio soundmax ? codec ad1988a/ad1988b rev. 0 information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ?2006 analog devices, inc. all rights reserved. features ten 192 khz dacs five independent stereo dac pairs 7.1 surround sound plus independent headphone independent 8 khz, 11.025 khz, 16 khz, 22.05 khz, 32 khz, 44.1 khz, 48 khz, 88.2 khz, 96 khz, 176.4 khz, and 192 khz sample rates selectable stereo mixer on outputs 16-, 20-, and 24-bit pcm resolution six 192 khz adcs three independent stereo adc pairs simultaneous record of up to three stereo channels support for quad microphone arrays plus independent capture channel independent 8 khz, 11.025 khz, 16 khz, 22.05 khz, 32 khz, 44.1 khz, 48 khz, 88.2 khz, 96 khz, 176.4 khz, and 192 khz sample rates 16-, 20-, and 24-bit resolution s/pdif output 44.1 khz, 48 khz, 88.2 khz, 96 khz, 176.4 khz, and 192 khz sample rates 16-, 20-, and 24-bit data widths pcm, wma/pro, dolby?, ac3, and dts? formats digital pcm gain control digital pcm adc/stream mixer s/pdif input 44.1 khz, 48 khz, 88.2 khz, 96 khz, 176.4 khz, and 192 khz sample rates 16-, 20-, and 24-bit data widths pcm, wma/pro, dolby, ac3, and dts formats digital pcm gain control auto synchronizes to source high quality stereo cd input with gnd sense mono_out pin for internal speakers or telephony retasking jack support enhanced features three stereo headphone amps ad1988a: windows vista? operating system premium logo compliant 95 db outputs 90 db audio inputs ad1988b: windows vista premium logo compliant and dolby master studio? compliant 101 db outputs 92 db audio inputs internal 32-bit arithmetic for greater accuracy impedance and presence detection on all jacks analog pcbeep and digital synthesis beep c/lfe channel swap two general-purpose digital i/o (gpio) pins 3.3 v analog and digital supplies reduced support components advanced power management modes 48-pin lqfp and lfcsp_vq package options, pb-free supports andrea active noise reduction headphones hardware volume control built-in microphone gain amps adjustable microphone bias pins
ad1988a/ad1988b rev. 0 | page 2 of 20 table of contents features .............................................................................................. 1 enhanced features............................................................................ 1 revision history ............................................................................... 2 functional block diagram .............................................................. 3 specifications..................................................................................... 4 test conditions............................................................................. 4 absolute maximum ratings............................................................ 7 thermal resistance ...................................................................... 7 esd caution.................................................................................. 7 pin configuration and function descriptions..............................8 clarification of output configurations .................................. 11 hd audio widgets......................................................................... 12 jack presence detection................................................................. 18 hd audio style jack presence detection ............................... 18 hardware volume control............................................................ 19 outline dimensions ....................................................................... 20 ordering guide .......................................................................... 20 revision history 10/06revision 0: initial version
ad1988a/ad1988b rev. 0 | page 3 of 20 functional block diagram 1(0b) 0(01) nid: 1d m m 24 bit 192 khz pcm ? dac digital a dac _4 nid: 0a -58 .5 to 0 db 24 bit 192 khz pcm ? dac digital a dac _ 0 nid: 03 -58 .5 to 0 db dvio dvdd dvss dvfilt bitclk r eset# sync sdo sdi am gp i o_0 / volume gpio hw volume control nid: 1f adc _ 0 nid: 08 adc _ 1 nid: 09 -58 .5 to + 22 .5 db -58 .5 to + 22 .5 db h d a u d i o i n t e r f a c e +3.3v +/- 10% +1.5v +/- 10% (a d 1988l15 ) +3.3v +/- 10% (a d 1988l33 ) +1.8v +5% -20 % adc se l_ 1 nid: 0d adc se l_ 0 nid: 0c s/pdif i n / gpio_1 s/pdif out z out put_en digital am nid: 02 nid: 07 nid: 1c nid: 1b -58 .5 to 0 db dac _ 3 nid: 06 24 bit 192 khz pcm ? dac digital a dac _ 2 nid: 05 -58 .5 to 0 db 24 bit 192 khz pcm ? dac digital a dac _ 1 nid: 04 -58 .5 to 0 db 24 bit 192 khz pcm ? dac digital a -58 .5 to 0 db digital gam -34 .5 to + 12 db inp u t_en gp i o_1 zgpio_1 -45.0 to0db 3dbsteps 24 bit 32-192 khz pcm / digital s/pdif rx po w e r co ntro l pow e r co ntrol avss avdd +3.3v +/-5% mic_bias_filt vref nid: 23 vref_filt mic bias regulator nid: 35 nid: 17 mic 1/2 port -e port -e mic bias bias z nid: 14 port -b mic bias bias z microphone port -b boost nid: 39 cd _gnd cd _r cd _l cd diff amp nid: 18 pcbeep nid: 1a m nid: 12 port -d mic bias / eapd bias / eapd z z hp-front l/r port -d boost nid: 3d hp amp m nid: 11 port -a mic bias bias z z headphone port -a hp amp boost nid: 38 surround center nid: 25 mp o r t - h z en nid: 16 port -f mic bias bias z surround back mp o r t - f z m nid: 24 z en center / lfe port -g nid: 13 mono_out -46 .5 to 0 db swap swap stereo paths mono paths 101+ db (ad1988b) nid: 15 line in port -c port -c mic bias / eapd bias / eapd z boost nid: 3a z m z hp amp boost nid: 3c m z 0(03) 1(04) 2(06) 3:1 m m nid: 22 1(21) 0(37) m m nid: 2b 1(21) 0(30) m m nid: 26 0(32) 1(21) m m nid: 2c 0(31) 1(21) m m m nid: 29 1(21) 0(04) m m nid:27 1(21) 0(05) m m nid: 2a 1(21) 0(06) m m nid: 28 1(21) 0(0a) m -46 .5 to 0 db nid: 21 2:1 2:1 nid: 10 digital beep am nid: 32 nid: 31 nid: 30 nid: 36 nid: 2d 1(0a) 0(04) 1(04) 0(05) m m nid: 1e 1(21) 0(36) a stereo down-mix 3:1 0(03) 1(04) 2(06) 24 bit 32-192 khz pcm / d igital s/pdif t x sele ctor 3:1 0(08) 2(0f) nid: 0b se l e cto r 10 :1 adc _ 2 nid: 0f -58 .5 to + 22 .5 db adc se l_ 2 nid: 0e 9(20-mixer) 2(3a?port-c) 0(38?port-a) 4(3c?port-e) 1(39?port-b) 3 (3b ? p ort-f) 8(3d?port-d) 5(18-cd) nid: 20 gam 7 gam 6 -34.5 to +12db 7 (1a - pcbeep) gam 0 4(34?port-e/h/g) gam 2 2(38?port-a) gam 4 1(33?port-c/h/g) gam 1 0(39?port-b) gam gam 3 5 5(3b?port-f) 3(3d?port-d) 6(18 -cd) nid: 34 0(3c) nid: 33 0(3a) 1(25) 2(24) 3:1 1(25) 2(24) 3:1 7(25?port-h) 6(24?port-g) 24 bit 192 khz pcm ? adc digital / analog gm 24 bit 192 khz pcm ? adc digital / analog gm se l e cto r 10 :1 24 bit 192 khz pcm ? adc digital / analog gm se l e cto r 10 :1 1(09) nid: 37 mixer power control nid: 19 3:1 0(03) 1(04) 2(06) boost nid: 3b en en en en en en split-z 05843-011 figure 1. block diagram
ad1988a/ad1988b rev. 0 | page 4 of 20 specifications test conditions test conditions for the ad1988a and ad1988b are as follows, unless otherwise noted. analog input/output conditions temperature at 25c digital supply (dv dd ) at 3.3 v 10% analog supply (av dd ) at 3.3 v 5% mic_bias_filt at 5.0 v 5% sample rate (f s ) at 48 khz input signal at 1008 hz analog output pass band at 20 hz to 20 khz dac conditions calibrated output ?3 db relative to full scale 10 k output load: line out tests 32 output load: headphone tests adc conditions calibrated 0 db pga gain input ?3.0 db relative to full scale table 1. typ parameter conditions/comments min ad1988a/ ad1988b max unit digital decimation and interpolation filters 1 f s 8 khz ~ 192 khz pass band 0 0.40 f s hz pass-band ripple 0.005 db stop band 0.60 f s hz stop band rejection ?100 db group delay 20 1/f s group delay variation over pass band 0 s analog-to-digital converters resolution 1 24 bits gain error full-scale span relative to nominal input voltage 10 % interchannel gain mismatch difference of gain errors 0.2 0.5 db adc offset error 5 mv adc crosstalk 1 line inputs input l, ground r, read r; input r, ground l, read l ?85 db line_in to other ?100 ?80 db digital-to-analog converters resolution 1 24 bits gain error full-scale span relative to nominal input voltage 10 % interchannel gain mismatch difference of gain errors 0.2 0.5 db total out-of-band energy 1 to 100 khz ?85 db dac crosstalk 1 input l, zero r, read r; input r, zero l, read l ?95 db dac volumesprogrammable gain attenuator step size dac_0, dac_1, dac_2, dac_3, dac_4 +1.5 db output gain/attenuation range ?58.5 0 db adc volumesprogrammable gain amplifier/attenuator step size adcsel_0, adcsel_1, adcsel_2 +1.5 db pga gain/attenuation range ?58.5 +22.5 db analog mixerprogrammable gain amplifier/attenuator signal-to-noise ratio (snr) 1 , 2 input to output (including cd in) 95/96 step size all mixer inputs +1.5 db input gain/attenuation range all mixer inputs ?34.5 +12.0 db
ad1988a/ad1988b rev. 0 | page 5 of 20 typ parameter conditions/comments min ad1988a/ ad1988b max unit analog line level outputs full-scale output voltage line out drive enabled 1.0 v rms 3 port-c, port-e, port-f, port-g, port-h, and mono_out when ports are used as line level outputs 2.83 v p-p output impedance 1 300 external total load impedance 10 k output capacitance 1 15 pf external load capacitance 1 1000 pf total harmonic distortion (thd+n) 1 ?85/?85 db dynamic range 1 ?60 db reference to f s a-weighted +95/+101 db analog hp drive outputs full-scale output voltage output drive enabled 1.0 v rms 3 port-a, port-b, and port-d when ports are used as outputs 2.83 v p-p output impedance 1 0.5 external load impedance 1 32 output capacitance 1 15 pf external load capacitance 1 1000 pf total harmonic distortion (thd+n) 1 10 k load ?83/?84 db 32 load ?83/?84 db dynamic range 1 ?60 db reference to f s a-weighted, 10 k or 32 loads +95/+101 db analog inputs when ports are used as inputs port-g, port-h, or cd 1 v rms 3 2.83 v p-p microphone boost amplifiers port-a, port-b, port-c, port-d, port-e, or port-f 0 db boost 1 v rms 3 2.83 v p-p +10 db boost 0.316 v rms 3 0.894 v p-p +20 db boost 0.1 v rms 3 0.283 v p-p +30 db boost 0.032 v rms 3 0.089 v p-p input impedance 1 pcbeep 23 k port-g, port-h 60 k all others (with 0 db boost) 150 k input capacitance 1 5 7.5 pf analog input performance total harmonic distortion plus noise (thd+n) 1 ?81/?82 db dynamic range ?60 db in reference to f s a-weighted +90/+92 db signal-to-noise ratio (snr) 2 +90/+92 db static digital specifications digital i/o (dv io ) dv io @ 3.3 v 10% 2.97 3.3 3.63 v v ih 2.0 v v il 0.8 v v oh 2.4 v v ol 0.6 v
ad1988a/ad1988b rev. 0 | page 6 of 20 typ parameter conditions/comments min ad1988a/ ad1988b max unit power supply analog (av dd ) 3.3 v 5% power supply range 3.13 3.30 3.46 v power dissipation 155/172 mw supply current 47/52 ma digital (dv dd ) 3.3 v 10% power supply range 2.97 3.30 3.63 v power dissipation 247.5/238 mw supply current 75/75 ma digital i/o (dv io ) 3.3 v 10% power supply range 2.97 3.30 3.63 v power dissipation 3.96 mw supply current 1.20 ma power supply rejection 1 (av dd ) 100 mv p-p signal @ 1 khz 80 db v 1 guaranteed, not tested. 2 snr measurement defined as the difference in level between a reference output signal and the device output with no signal app lied. this definition is taken from b. metzler, audio measurement handbook , 1 st edition, audio precision, inc., 1993, p. 165. 3 rms values assume sine wave input. table 2. power-down states ad1988a/ad1988b parameter comments d-state di dd typ ai dd typ unit power-down states function node d3 21/20 1.2/1.7 ma dac pair powered down saves (each) d3 6/6 5/5.6 ma adc pair powered down saves (each) d3 5.3/5.4 3.2/3.1 ma mixer power control (and associated amps) saves d3 0/0 2.0/2.4 ma mic_bias powered down saves d3 0/0 0.5/0.5 ma reset low (active) state 2.9/2.7 3.1/3.4 ma
ad1988a/ad1988b rev. 0 | page 7 of 20 absolute maximum ratings table 3. parameter rating digital (dv dd ) ?0.30 v to +3.65 v digital i/o (dv io ) ?0.30 v to +3.65 v analog (av dd ) ?0.30 v to +3.65 v input current (except supply pins) 10.0 ma analog input voltage (signal pins) ?0.30 v to av dd + 0.3 v digital input voltage (signal pins) ?0.30 v to dv io + 0.3 v ambient temperature (operating) 0c to +70c storage temperature range ?65c to +150c stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. thermal resistance ambient temperature ratings are as follows: t amb = t case ? (p d ca ) where: t case = case temperature in c. p d = power dissipation in w. ca = thermal resistance (case-to-ambient). table 4. thermal resistance package type ja 1 jc 2 ca 3 unit lqfp 48 17 31 o c/w lfcsp_vq 4 47 15 32 o c/w 1 ja = thermal resistance: junction-to-ambient. 2 jc = thermal resistance: junction-to-case. 3 ca = thermal resistance: case-to-ambient. 4 vq = very thin quad. esd caution
ad1988a/ad1988b rev. 0 | page 8 of 20 pin configuration and fu nction descriptions 13 14 15 16 17 18 19 20 21 22 23 24 sense_a/src_b port-e_l port-e_r port-f_l port-f_r cd_l cd_gnd cd_r port-b_l port-b_r port-c_l port-c_r 48 47 46 45 44 43 42 41 40 39 38 37 s/pdif-out s/pdif-in/gpio_1 port-h_r port-h_l port-g_r port-g_l av ss port-a_r mono_out port-a_l av dd mic_bias-a 1 2 3 4 5 6 7 8 9 10 11 12 dv core gpio_0/volume dv i/o dv ss sdata_out bit_clk dv ss sdata_in dv dd sync reset pcbeep port-d_l sense_b/src_a mic_bias_filt mic_bias/eapd-d mic_bias-e mic_bias-f mic_bias/eapd-c mic_bias-b vref_filt av ss av dd 35 port-d_r 36 34 33 32 31 30 29 28 27 26 25 ad1988a/ad1988b top view (not to scale) pin 1 indicator 05843-001 figure 2. lfcsp_vq pin configuration 48 s/pdif-out 47 s/pdif-in/gpio_1 46 port-h_r 45 port-h_l 44 port-g_r 43 port-g_l 42 av ss 41 port-a_r 40 mono_out 39 port-a_l 38 av dd 37 mic_bias-a 35 port-d_l 34 sense_b/src_a 33 mic_bias_filt 30 mic_bias-f 31 mic_bias-e 32 mic_bias/eapd-d 36 port-d_r 29 mic_bias/eapd-c 28 mic_bias-b 27 vref_filt 25 av dd 26 av ss 2 gpio_0/volume 3 dv i/o 4 dv ss 7 dv ss 6 bit_clk 5 sdata_out 1 dv core 8 sdata_in 9 dv dd 10 sync 12 pcbeep 11 13 sense_a/src_b 14 port-e_l 15 port-e_r 16 port-f_l 17 port-f_r 18 cd_l 19 cd_gnd 20 cd_r 21 port-b_l 22 port-b_r 23 port-c_l 24 port-c_r pin 1 ad1988a/ad1988b top view (not to scale) 05843-003 reset figure 3. lfqp pin configuration table 5. pin function descriptions mnemonic pin number i/o description dv core 1 o filter connection for internal core voltage regulator. this pin must be connected to filter capacitors: 10 f, 1.0 f, and 0.1 f connected in parallel between pin 1 and dv ss (pin 4 and pin 7). gpio_0/volume 2 i/o general-purpose input/output pin (digital i/o). digi tal signal used to control external circuitry. volume control. when enabled, it can be used as an external volume control dv io 3 i link digital i/o voltage reference. 3.3 v (10%). dv ss 4, 7 i digital supply return (ground). sdata_out 5 i link serial data output (digital interface). ad 1988 input stream. clocked on both edges of the bit_clk. bit_clk 6 o link bit clock (digital interface). 24.000 mhz serial data clock. sdata_in 8 i/o link serial data input (digital interface). ad 1988 output stream. clocked only on one edge of bit_clk. dv dd 9 i digital supply voltage 3.3 v 10%. this is regulate d down to 1.9 v on pin 1 to supply the internal digital core internal to the ad1988. sync 10 i link frame sync (digital interface). 48 khz frame sync plus sdi stream ids. reset 11 i link reset (digital interface). ad1988 master hardware reset. pcbeep 12 i monaural input from system for pcbeep. line level input. sense_a/src_b 13 i/o jack sense a to jack sense d input/sense b drive. port-e_l, port-e_r 14, 15 i/o left and right rear panel stereo mic in/c/lfe (analog input/output). input: line level input, supports microphones with mic_bias and boost amplifiers. output: line level output. port-f_l, port-f_r 16, 17 i/o left and right rear panel stereo mic in/surround rear (analog input/output). input: line level input, supports microphones with mic_bias and boost amplifiers. output: line level output only. cd_l, cd_r 18, 20 i cd audio left channel, cd audio right channel. cd_gnd 19 i cd audio analog ground reference (for analog cd input). line level input only. port-b_l, port-b_r 21, 22 i/o front panel stereo mic in/front panel headphones. analog input/output. input: line level input, supports microphones with mic bias and boost amplifiers. output: line level output, capable of driving headphone load and power.
ad1988a/ad1988b rev. 0 | page 9 of 20 mnemonic pin number i/o description port-c_l, port-c_r 23, 24 i/o rear panel line-i n/surround back output. analog input/output. input: line level input, supports microphones with mic bias and boost amplifiers. output: line level output only. av dd 25, 38 i analog supply voltage. 3.3 v only. cauti on: do not apply 5.0 v to this pin. av dd supplies should be well regulated and filtered because supply noise degrades audio performance. av ss 26, 42 i analog supply return (ground). av ss should be connected to dv ss using a conductive trace under, or close to, the ad1988a/ad1988b. vref_filt 27 o voltage reference filter. this pin must be conne cted to filter capacitors: 1.0 f and 0.1 f connected in parallel between pin 27 and av ss (pin 26). mic_bias-b 28 o switchable microphone bias for port-b. capable of: high-z, 0 v, 1.65 v, 3.78 v, and 3.95 v (with 5.0 v on pin 33). high-z, 0 v, 1.65 v, 2.86 v, and 3.10 v (with 3.3 v on pin 33). mic_bias-c 29 o switchable microphone bias for port-c . this pin has the same function as mic_bias-b. mic_bias-f 30 o switchable microphone bias for port-f . this pin has the same function as mic_bias-b. mic_bias-e 31 o switchable microphone bias for port-e. this pin has the same function as mic_bias-b. mic_bias-d 32 o switchable microphone bias for port-d . this pin has the same function as mic_bias-b. mic_bias_filt 33 i filter for microphone bias boost circuitry. connect this pin to 5.0 v via a low-pass filter. when connected in this way, the ad1988a/ad1988b are each capable of providing 3.95 v as a microphone bias to all of the mic_bias pins. if 5 v is not available, connect this pin to 3.3 v (av dd ) via a low-pass filter. the ad1988a/ad1988b produce a mic_bias voltage relative to the av dd supply (typically 3.1 v @ av dd = 3.3 v). sense_b/src_a 34 i/o jack sense e to jack sense h input/sense a drive. port-d_l, port-d_r 35, 36 i/o left and right rear panel headph one (front line out)/stereo mic in. analog input/output. input: line level input, supports microphones with mic_bias and boost amplifiers. output: line level output, capable of driving headphone load and power. mic_bias-a 37 o switchable microphone bias for port-a. this pin has the same function as mic_bias-b. port-a_l, port-a_r 39, 41 i/o left and right front panel headphone output/stereo mic in. analog input/output. input: line level input, supports microphones with mic_bias and boost amplifiers. output: line level output, capable of driving headphone load and power. mono_out 40 o monaural output to internal speaker or telephony subsystem. line level output only. port-g_l, port-g_r 43, 44 left and righ t rear panel c/lfe output/line input. input: line level input. output: line level output. port-h_l, port-h_r 45, 46 left and right rear panel surrou nd center/side output/line in put. analog input/output. input: line level input. output: line level output. s/pdif_in/gpio_1 47 i/o s/pdif_in/gpio pin. s/pdif_in supports s/pdif in put. when enabled, gpio_1 can be used as a gpio pin. s/pdif_out 48 o s/pdif_out. supports s/pdif output.
ad1988a/ad1988b rev. 0 | page 10 of 20 table 6. pins grouped by function function pin no. mnemonic digital interface 5 sdata_out 6 bit_clk 8 sdata_in 10 sync 11 reset digital input/output 48 s/pdif_out 47 s/pdif_in/gpio_1 2 gpio_0/volume jack sense 13 sense_a/src_b 34 sense_b/src_a filter/reference 1 dv core 27 vref_filt 33 mic_bias_filt microphone bias 28 mic_bias-b 29 mic_bias-c 30 mic_bias-f 31 mic_bias-e 32 mic_bias-d 37 mic_bias-a power and ground 9 dv dd 3 dv io 4, 7 dv ss 25, 38 av dd 26, 42 av ss analog input/output 12 pcbeep 14 port-e_l 15 port-e_r 16 port-f_l 17 port-f_r 18 cd_l 20 cd_r 21 port-b_l 22 port-b_r 23 port-c_l 24 port-c_r 35 port-d_l 36 port-d_r 39 port-a_l 40 mono_out 41 port-a_r 43 port-g_l 44 port-g_r 45 port-h_l 46 port-h_r
ad1988a/ad1988b rev. 0 | page 11 of 20 clarification of output configurations dac, adc, and port assignments are arbitrary; however, ports are optimized for certain configurations. use the guidelines in table 7 , table 8 , and table 9 when selecting ports for particular functions. note the following for each of these tables: ? hp is the output capable of driving headphone load and power ? mic is input that supports microphones with mic bias and boost amplifiers ? lo is the line level output ? li is the line level input in desktop applications with discreet jacks (the default configuration), assign the ports as listed in table 7 . table 7. discreet jacks (default configuration) port function hp mic lo li port-a front panel headphone x x x x port-b front panel microphone x x x x port-c rear panel line-in x x x port-d rear panel front/headphone x x x x port-e rear panel microphone x x x port-f rear panel surround-rear (5.1) x x x port-g rear panel c/lfe x x port-h rear panel surround- center/side (7.1) x x mono_out internal mono speaker (use gpio as eapd) x in desktop applications with shared input/5.1 jacks, assign the ports as listed in table 8 . table 8. shared input/5.1 jacks port function hp mic lo li port-a front panel headphone x x x x port-b front panel microphone x x x x port-c rear panel line- in/surround-rear (5.1) x x x port-d rear panel front/headphone x x x x port-e rear panel microphone/c/lfe x x x mono_out internal mono speaker (use gpio as eapd) x in notebook applications, to support fully retasking jacks, assign the ports as listed in table 9 . table 9. port function hp mic lo li port-a headphone jack x x x x port-b microphone jack x x x x port-d line-in jack x x x x port-c internal stereo speakers (use gpio as eapd) x x x port-e/port-f internal quad microphone array (optional) x x x
ad1988a/ad1988b rev. 0 | page 12 of 20 hd audio widgets table 10. node id name type description 00 root root device identification 01 function function designates this device as an audio codec 02 s/pdif dac audio output s/pdif digital stream output interface 03 dac_0 audio output stereo headphone channel digital/audio converters 04 dac_1 audio output stereo front channel digital/audio converters 05 dac_2 audio output stereo c/lfe channel digital/audio converters 06 dac_3 audio output stereo surround-back (5.1) channel digital/audio converters 07 s/pdif adc audio input s/pdif digital stream input interface 08 adc_0 audio input stereo record channel 0 audio/digital converters 09 adc_1 audio input stereo record channel 1 audio/digital converters 0a dac_4 audio output stereo surround-side (7.1) channel digital/audio converters 0b s/pdif mix selector audio selector selects the adc to drive the s/pdif mixer 0c adc selector 0 audio selector selects and amplifies/attenuates the input to adc_0 0d adc selector 1 audio selector selects and amplifies/attenuates the input to adc_1 0e adc selector 2 audio selector selects and amplifies/attenuates the input to adc_2 0f adc_2 audio input stereo record channel 2 audio/digital converters 10 digital beep beep generator internal digital pcbeep signal 11 port-a pin complex front panel headphone jack 12 port-d pin complex rear panel front speaker jack 13 mono_out pin complex monaural output pin (internal speakers or telephony system) 14 port-b pin complex front panel microphone jack 15 port-c pin complex rear panel line-in jack 16 port-f pin complex rear panel surround-back (5.1) jack 17 port-e pin complex rear panel microphone jack 18 cd in pin complex analog cd input 19 mixer power-down power widget powers down the analog mixer and associated amps 1a analog pcbeep pin complex external analog pcbeep signal input 1b s/pdif out pin complex s/pdif output pin 1c s/pdif in pin complex s/pdif input pin 1d s/pdif mixer audio mixer mixes the selected adc with the digital stream to drive s/pdif out 1e mono_out mixer audio mixer selects the source th at drives the mono_out signal 1f volume knob vendor defined hardware volume knob 20 analog mixer audio mixer mixes individual gain analog inputs 21 mixer output attenuator audio selector attenuates the mixer output to drive the port mixers 22 port-a mixer audio mixer mixes the dac_0 and mixer output amps to drive port-a 23 vref power-down vendor defined powers down the internal and external vref circuitry 24 port-g pin complex rear panel c/lfe jack 25 port-h pin complex rear panel surround-side (7.1) jack 26 port-e mixer audio mixer mixes the port-e selected dac and mixer output amps to drive port-e 27 port-g mixer audio mixer mixes the dac_3 and mixer output amps to drive port-g 28 port-h mixer audio mixer mixes the dac_4 and mixer output amps to drive port-h 29 port-d mixer audio mixer mixes the dac_1 and mixer output amps to drive port-d 2a port-f mixer audio mixer mixes the dac_2 and mixer output amps to drive port-f 2b port-b mixer audio mixer mixes the port-b selected dac and mixer output amps to drive port-b 2c port-c mixer audio mixer mixes the port-c selected dac and mixer output amps to drive port-c 2d stereo mix-down audio mixer mixes the stereo l/r channels to drive mono_out 2f bias power-down vendor defined powers down the internal mic_bias_filt and all mic_bias pins 30 port-b out selector audio selector selects dac_0, dac_1, and dac_3 for port-b 31 port-c out selector audio selector selects dac_2 and dac_4 for port-c 32 port-e out selector audio selector selects dac_2 and dac_4 for port-e 33 port-c in selector audio selector selects from the port-c, port -g, and port-h inputs to the mixer input
ad1988a/ad1988b rev. 0 | page 13 of 20 node id name type description 34 port-e in selector audio selector selects from the port-e, port -g, and port-h inputs to the mixer input 36 mono_out selector audio selector selects dac_0, dac_1, and dac_3 for mono_out 37 port-a out selector audio selector selects dac_0, dac_1, and dac_3 for port-a 38 port-a boost audio selector microphone boost amp for port-a 39 port-b boost audio selector microphone boost amp for port-b 3a port-c boost audio selector microphone boost amp for port-c 3b port-f boost audio selector microphone boost amp for port-f 3c port-e boost audio selector microphone boost amp for port-e 3d port-d boost audio selector microphone boost amp for port-d table 11. ad1988a device root and function node parameters node vendor id revision id 1 sub node count function group type audio function group capabilities gpio capabilities id name 0x00 0x02 0x04 0x05 0x08 0x11 00 root 11d41988 00100400 00010001 01 function 0002003c 00000001 00010c0c 40000002 1 silicon revision number may change witho ut prior notice. number shown is current at the publication date of this document. table 12. ad1988b device root and function node parameters node vendor id revision id 1 sub node count function group type audio function group capabilities gpio capabilities id name 0x00 0x02 0x04 0x05 0x08 0x11 00 root 11d4198b 00100300 00010001 01 function 0002003c 00000001 00010c0c 40000002 1 silicon revision number may change witho ut prior notice. number shown is current at the publication date of this document.
ad1988a/ad1988b rev. 0 | page 14 of 20 table 13. widget parameters node widget capabilities pcm size, rate stream formats pin capabilities input amp capabilities con. list length power states output amp capabilities volume knob capabilities id type id 09 0a 0b 0c 0d 0e 0f 12 13 01 x 000004c0 000e07ff 00000001 80000000 00000009 00052727 02 0 00030311 000e07e0 00000005 00000001 03 0 00000405 000e07ff 00000001 00000000 00000009 00052727 04 0 00000405 000e07ff 00000001 00000000 00000009 00052727 05 0 00000405 000e07ff 00000001 00000000 00000009 00052727 06 0 00000405 000e07ff 00000001 00000000 00000009 00052727 07 1 00130391 000e07e0 00000005 00000001 08 1 00100501 000e07ff 00000001 00000001 00000009 09 1 00100501 000e07ff 00000001 00000001 00000009 0a 0 00000405 000e07ff 00000001 00000000 00000009 00052727 0b 3 00300301 00000003 0c 3 0030010d 00000007 80053627 0d 3 0030010d 00000007 80053627 0e 3 0030010d 00000007 80053627 0f 1 00100501 000e07ff 00000001 00000001 00000009 10 7 0070000c 00000000 800b0f0f 11 4 0040018d 0000373f 00000001 80000000 12 4 0040018d 0000373f 00000001 80000000 13 4 0040010c 00000010 00000001 80051f1f 14 4 0040018d 0000373f 00000001 80000000 15 4 0040018d 00003737 00000001 80000000 16 4 0040018d 00003737 00000001 80000000 17 4 0040098d 00003737 00000001 80000000 18 4 00400001 00000020 00000000 19 5 00500500 00000002 00000009 1a 4 00400000 00000020 00000000 1b 4 0040030d 00000010 00000001 80052727 1c 4 0040020b 00000020 80051f17 00000000 1d 2 00200303 80000000 00000002 1e 2 00200103 80000000 00000002 1f 6 00600080 00000000 000000bf 20 2 0020010b 80051f17 00000008 21 3 0030010d 00000001 80051f1f 22 2 00200103 80000000 00000002 23 f 00f00100 00000008 24 4 0040098d 00000037 00000001 80000000 25 4 0040018d 00000037 00000001 80000000 26 2 00200103 80000000 00000002 27 2 00200103 80000000 00000002 28 2 00200103 80000000 00000002 29 2 00200103 80000000 00000002 2a 2 00200103 80000000 00000002 2b 2 00200103 80000000 00000002 2c 2 00200103 80000000 00000002 2d 2 00200100 00000001 2f f 00f00100 00000006 30 3 00300101 00000003 31 3 00300101 00000002
ad1988a/ad1988b rev. 0 | page 15 of 20 node widget capabilities pcm size, rate stream formats pin capabilities input amp capabilities con. list length power states output amp capabilities volume knob capabilities id type id 09 0a 0b 0c 0d 0e 0f 12 13 32 3 00300101 00000002 33 3 00300101 00000003 34 3 00300101 00000003 36 3 00300101 00000003 37 3 00300101 00000003 38 3 0030010d 00000001 00270300 39 3 0030010d 00000001 00270300 3a 3 0030010d 00000001 00270300 3b 3 0030010d 00000001 00270300 3c 3 0030010d 00000001 00270300 3d 3 0030010d 00000001 00270300
ad1988a/ad1988b rev. 0 | page 16 of 20 table 14. connection list node connections 0 1 2 3 4 5 6 7 id 0 to 3 4 to 7 length nid i nid i nid i nid i nid i nid i nid i nid 02 0000001d 1 1d 03 0 04 0 05 0 06 0 07 0000001c 1 1c 08 0000000c 1 0c 09 0000000d 1 0d 0a 0 0b 000f0908 3 08 09 0f 0c 2418bc38 00203d25 7 38 1 3c 18 24 25 3d 20 0d 2418bc38 00203d25 7 38 1 3c 18 24 25 3d 20 0e 2418bc38 00203d25 7 38 1 3c 18 24 25 3d 20 0f 0000000e 1 0e 10 0 11 00000022 1 22 12 00000029 1 29 13 0000002d 1 2d 14 0000002b 1 2b 15 0000002c 1 2c 16 0000002a 1 2a 17 00000026 1 26 18 0 19 00002120 2 20 21 1a 0 1b 00000002 1 02 1c 0 1d 00000b01 2 01 0b 1e 00002136 2 36 21 1f 0 20 3d383339 1a183b34 8 39 33 38 3d 34 3b 18 1a 21 00000020 1 20 22 00002137 2 37 21 23 25249811 2120bd38 8 11 1 18 24 25 38 1 3d 20 21 24 00000027 1 27 25 00000028 1 28 26 00002132 2 32 21 27 00002105 2 05 21 28 0000210a 2 0a 21 29 00002104 2 04 21 2a 00002106 2 06 21 2b 00002130 2 30 21 2c 00002131 2 31 21 2d 0000001e 1 1e 2f 15141211 00001716 6 11 12 14 15 16 17 30 00060403 3 03 04 06 31 00000a04 2 04 0a 32 00000405 2 05 04 33 0024253a 3 3a 25 24 34 0024253c 3 3c 25 24
ad1988a/ad1988b rev. 0 | page 17 of 20 node connections 0 1 2 3 4 5 6 7 id 0 to 3 4 to 7 length nid i nid i nid i nid i nid i nid i nid i nid 36 00060403 3 03 04 06 37 00060403 3 03 04 06 38 00000011 1 11 39 00000014 1 14 3a 00000015 1 15 3b 00000016 1 16 3c 00000017 1 17 3d 00000012 1 12 table 15. default configuration bytes 1 msb 31 29 27 23 19 15 8 7 3 lsb 30 28 24 20 16 12 8 4 0 node location default conn misc def id value connectivity chassis position device type color jd ovrrd assn seq 11 02214030 jack external front hp out ? jack green 0 3 0 12 01014010 jack external rear line out ? jack green 0 1 0 13 9913011f fixed internal special 3 speaker atapi unknown 1 1 f 14 02a19040 jack external front mic in ? jack pink 0 4 0 15 01813021 jack external rear line in ? jack blue 0 2 1 16 01011012 jack external rear line out ? jack black 0 1 2 17 01a19020 jack external rear mic in ? jack pink 0 2 0 18 9933012e fixed internal special 3 cd atapi unknown 1 2 e 1a 99f301f0 fixed internal special 3 other atapi unknown 1 f 0 1b 014511f0 jack external rear s/pdif out optical black 1 f 0 1c 01c511f0 jack external rear s/pdif in optical black 1 f 0 24 01016011 jack external rear line out ? jack orange 0 1 1 25 01012014 jack external rear line out ? jack gray 0 1 4 1 default configuration values are set on co dec power-up only. to preserve modificati ons by bios control, default configuration values do not change by reset operations.
ad1988a/ad1988b rev. 0 | page 18 of 20 jack presence detection hd audio style jack presence detection the ad1988 uses two jack sense pins for presence detection on up to eight audio jacks. this, combined with the device identifi- cation engine, enables software to determine if there is a device plugged into the circuit, and the type of device it is. allowing software to configure jacks and amplifiers, as necessary, ensures proper audio operation. detect jack presence by using a resistor tree arrangement detailed by the hd audio specification, allowing up to four jacks per sense line. jacks must have normally open, isolated switches to use this method of jack presence detection. for proper operation, there must be a 2.67 k 1% resistor connected between sense_a and av dd , and another 2.67 k 1% resistor between sense_b and av dd . the specific resistor values for each jack are listed in table 16 . use 1% tolerance resistors to ensure accurate detection. table 16. jack sense mapping resistor value sense_a sense_b (1% tolerance) name port node id name port node id 2.67 k pull-up to av dd pull-up to av dd 5.10 k front d 0x12 surr_side (7.1) h 0x25 10.0 k line in c 0x15 c/lfe g 0x24 20.0 k front_mic b 0x14 surr_back (5.1) f 0x16 39.2 k hp_out a 0x11 rear_mic e 0x17
ad1988a/ad1988b rev. 0 | page 19 of 20 hardware volume control v dd r2 10k ? r1 3.3k ? sw1 up r3 5.1k ? sw2 down r4 3.3k ? sw3 mute gpio_0/volume optional 05843-008 figure 4 . volume control circuitry the ad1988a/ad1988b support external volume control on pin 2 (gpio_0/volume). the circuit diagram in figure 4 allows up/down/mute control using only three switches and four resistors external to the codec. the up/down switches can also be replaced by a center-position-off spdt toggle switch. the mute switch is optional, but desirable, for a satisfactory user interface. to use the gpio_0/volume pin (pin 2) as a gpio pin, it is recommended to pull it down using a 10 k resistor (pin 2 to dv ss ). in the gpio configuration, the volume control widget has no effect. when the gpio_0/volume pin (pin 2) is used as a volume con- trol, pull-up pin 2 to av dd . the volume control widget operates the codec volumes only under software control. if one of the buttons is pressed, the control volume setting is incremented (up), decremented (down), or set bit 7 (mute). the volume control supports 40 steps (other than mute) and uses a range of 0 (0x00, minimum volume) to 63 (0x3f, maximum volume). pressing the mute switch (or both up and down simultaneously) toggles bit 7 which indicates mute on/off.
ad1988a/ad1988b rev. 0 | page 20 of 20 outline dimensions compliant to jedec standards ms-026-bbc top view (pins down) 1 12 13 25 24 36 37 48 0.27 0.22 0.17 0.50 bsc lead pitch 7.00 bsc sq 1.60 max 0.75 0.60 0.45 view a 9.00 bsc sq pin 1 0.20 0.09 1.45 1.40 1.35 0.08 max coplanarity view a rotated 90 ccw seating plane 7 3.5 0 0.15 0.05 figure 5. 48-lead low profile quad flat package [lqfp] (st-48) dimension shown in millimeters pin 1 indicator top view 6.75 bsc sq 7.00 bsc sq 1 48 12 13 37 36 24 25 5.25 5.10 sq 4.95 0.50 0.40 0.30 0.30 0.23 0.18 0.50 bsc 12 max 0.20 ref 0.80 max 0.65 typ 1.00 0.85 0.80 5.50 ref 0.05 max 0.02 nom 0.60 max 0.60 max pin 1 indicator coplanarity 0.08 seating plane 0.25 min exposed pad (bottom view) compliant to jedec standards mo-220-vkkd-2 figure 6. 48-lead lead frame chip scale package [lfcsp_vq] 7 mm 7 mm body, very thin quad (cp-48-1) dimension shown in millimeters ordering guide model audio output performance temperature range package description package option ad1988ajstz 1 95 db 0c to 70c 48-lead lqfp, tray st-48 ad1988ajstz-rl 1 95 db 0c to 70c 48-lead lqfp, reel st-48 ad1988ajcpz 1 95 db 0c to 70c 48-lead lfcsp_vq, tray cp-48-1 ad1988ajcpz-rl 1 95 db 0c to 70c 48-lead lfcsp_vq, reel cp-48-1 ad1988bjstz 1 101 db 0c to 70c 48-lead lqfp, tray st-48 ad1988bjstz-rl 1 101 db 0c to 70c 48-lead lqfp, reel st-48 ad1988bjcpz 1 101 db 0c to 70c 48-lead lfcsp_vq, tray cp-48-1 AD1988BJCPZ-RL 1 101 db 0c to 70c 48-lead lfcsp_vq, reel cp-48-1 1 z = pb-free part. dolby and dolby master studio ar e trademarks of dolby laboratori es. dts is a trademark of dts, inc. windows vista is either a r egistered trademark or trademark of microsoft corporation in the united states and/or other countries. ?2006 analog devices, inc. all rights reserved. trademarks and registered trademarks are the prop erty of their respective owners. d05843-0-10/06(0)

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