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hd audio soundmax ? codec ad1981hd 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 ri ghts 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 ? 2005 analog devices, inc. all rights reserved. features 2 dac channels: 16-, 20-, or 24-bit 2 adc channels: 16- or 20-bit hd audio sample rates 8 khz, 11.025 khz, 16 khz, 22.05 khz, 32 khz, 44.1 khz, 48 khz greater than 90 db dynamic range s/pdif output: 32 khz, 44.1 khz or 48 khz, 16- or 24-bit digital beep and analog pc beep pass-through integrated headphone amplifiers on two ports port retasking selectable microphone and line inputs full analog mixer legacy inputs: cd and auxiliary inputs external amplifier power-down (eapd) 48-pin, pb-free lqfp enhanced features no afilt pins, results in bom savings 5.0 v av dd supply, 3.3 v dv dd supply jack-sensing autoconfiguration options mute line output and monaural output (mono_out) when headphones are used mute mono_out when a device is in the line out jack selectable trip level: high/low supports all jack types peripheral identification/enumeration jack event/presence detection using sense or gpio pins microphone to mono_out fo r speakerphone applications advanced power management modes 4 software-controlled microphone bias pins up to 30 db microphone boost 4 gpiosexternal control or traditional jack sense functional block diagram 04321-005 eq pcm - dac s/pdif_out hd audio interface gpio gpio jack sense sense digital pc beep ga g pc beep ga ga ga ga ga ga selector pc beep pcm/float32 - adc selector m g pcm/ac3 s/pdif tx selector selector gam gam hp selector gam boost boost mic bias hp z z selector gam mic bias z z selector boost gam mic bias z z selector boost mic bias z cd_l cd_gnd cd_r diff amp port-e aux m m mic_bias-c port-c mono_out port-a mic_bias-f port-f mic_bias-d port-d mic_bias-b port-b line_in headphone rear mic line_out front mic reset av dd av ss pc beep 5v m m m m m m m m figure 1.
ad1981hd rev. 0 | page 2 of 16 table of contents functional block diagram details ................................................. 3 specifications ..................................................................................... 4 absolute maximum ratings ............................................................ 7 environmental conditions .......................................................... 7 esd caution .................................................................................. 7 pin configuration and function descriptions ............................. 8 hd audio codec information ..................................................... 10 jack presence detection ................................................................. 15 hd audio style jack presence detection ............................... 15 classic jack presence detection ............................................... 15 outline dimensions ....................................................................... 16 ordering guide .......................................................................... 16 revision history 6/05initial version: revision 0
ad1981hd rev. 0 | page 3 of 16 functional block diagram details eq 48khz, 24-bit pcm - dac s/pdif_out nid: 0a 3.3v hd audio interface gpio_3 gpio_2 gpio_1/js_0 gpio_0/js_1 nid: 01 gpio jack sense sense_a/src_b sense_b/src_a sdata_in sdata_out sync reset bit_clk dv dd dv ss m digital pc beep ?34.5 to +12db nid: 0e nid: 11 ga m ?34.5 to +12db m m m 0db to ?45db g m m m pc beep nid: 1a ga ga nid: 1b ga nid: 13 ga nid: 1c ga nid: 12 ga nid: 1d selector 2:1 nid: 10 pc beep in nid: 16 nid: 0d 48khz, 20-bit pcm/float32 - adc 0db to 22.5db selector 8:1 nid: 04 nid: 15 m g nid: 09 selector 2:1 boost mic bias gam z z bias_en mic_bias-c port-c line_in output_en output_en 0db, 10db, 20db, 30db ?46.5db to +3db nid: 07 selector 2:1 gam gam hp mono_out port-a headphone hp_en ?46.5db to +3db nid: 18 selector 2:1 boost mic bias gam z z bias_en mic_bias-f port-f rear mic output_en output_en 0db, 10db, 20db, 30db ?46.5db to +3db nid: 05 selector 2:1 boost mic bias gam hp z z bias_en mic_bias-d port-d line_out hp_en output_en 0db, 10db, 20db, 30db ?46.5db to +3db nid: 08 boost mic bias z bias_en mic_bias-b port-b front mic 0db, 10db, 20db, 30db bias_sel reset nid: 06 nid: 0f av dd av ss pc beep 5v nid: 02 48khz, 24-bit pcm/ac3 s/pdif tx nid: 03 selector 2:1 nid: 0b selector 6:1 cd_l cd_gnd cd_r cd diff amp port-e aux nid: 19 nid: 17 nid: 0c nid: 1e nid: 1f ?46.5db to +3db m m output_en bias_sel bias_sel bias_sel 04321-001 figure 2.
ad1981hd rev. 0 | page 4 of 16 specifications test conditions, unless otherwise noted. table 1. test conditions parameter typ unit temperature 25 c digital supply (dv dd ) 3.3 10% v analog supply (av dd ) 5.0 10% v sample rate (f s ) 48 khz input signal 1.0 khz analog output pass band 20 to 20,000 hz v ih 2.0 v v il 0.8 v v ih 2.4 v v il 0.6 v dac test conditions calibrated output ?3 db relative to full scale 10 k output load, ports c, d, f, and mono 32 output load, port a adc test conditions calibrated 0 db pga gain input ?3.0 db relative to full scale input sourced on port b, 0 db boost table 2. analog input parameter min typ max unit ports b, c, d, e: 0 db 1 v rms 1 2.83 v p-p ports b, c, d, e: 30 db 0.032 v rms 0.089 v p-p ports b, c, d, e: 20 db 0.1 v rms 0.283 v p-p ports b, c, d, e: 10 db 0.316 v rms 0.894 v p-p port f, cd in 1 v rms 2.83 v p-p input impedance 2 20 k input capacitance 5 7.5 pf 1 rms values assume sine wave input. 2 guaranteed by design; not production tested. table 3. master volume parameter min typ max unit step size (ports a, b, c, d, e, mono_out) 1.5 db output gain range C46.5 +3 db mute attenuation of 0 db fundamental 80 db 1 guaranteed by design; not production tested.
ad1981hd rev. 0 | page 5 of 16 table 4. programmable gain amplifieradc parameter min typ max unit step size 1.5 db pga gain range span 0.0 22.5 db table 5. analog mixerinput gain/amplifiers/attenuators parameter min typ max unit signal-to-noise ratio (snr) line in to line out 85 db microphone in to line out 1 80 db step size: all mixer inputs (except pc beep) 1.5 db step size: pc beep 3.0 db input gain range: all mixer inputs (except pc beep) ?34.5 +12.0 db digital pc beep ?45.0 0.0 db 1 guaranteed by design; not production tested. table 6. digital decimation and interpolation filters 1 parameter min typ max unit pass band 0 0.4 f s hz pass-band ripple 0.09 db transition band 0.4 f s 0.6 f s hz stop band 0.6 f s hz stop-band rejection ?74 db group delay 16/f s sec group delay variation over pass band 0 s 1 guaranteed by design; not production tested. table 7. analog-to-digital converters parameter min typ max unit resolution 20 bits total harmonic distortion (thd) ?95 db dynamic range (?60 db input, thd + n referenc ed to full scale, a-weighted) ?85 db crosstalk: line inputs (input l, ground r, read r; input r, ground l, read l) ?80 db crosstalk: line inputs and other inputs ?100 ?80 db gain error (full-scale span relative to nominal input voltage) 10 % interchannel gain mismatch (difference of gain errors) 0.5 db adc offset error 5 mv table 8. digital-to-analog converters parameter min typ max unit resolution 24 bits total harmonic distortion (line out) ?92 db total harmonic distortion (h eadphone out) ?75 db dynamic range (?60 db input, thd + n refere nced to full scale, a-weighted) 90 db gain error (full-scale span relative to nominal input voltage) 10 % interchannel gain mismatch (difference of gain errors) 0.7 db dac crosstalk 1 (input l, zero r, read r out; input r, zero l, read l out) ?80 db 1 guaranteed by design; not production tested.
ad1981hd rev. 0 | page 6 of 16 table 9. analog output parameter min typ max unit full-scale output voltage (headp hone disabled) 1 v rms 2.83 v p-p output impedance 1 300 external load impedance 10 k output capacitance 15 pf external load capacitance 1000 pf full-scale output voltage (headphone out) 1 v rms 2.83 v p-p output impedance 1 external load impedance 32 output capacitance 15 pf external load capacitance 1000 pf vref_filt 2.050 2.250 2.450 v mic_bias (ports b, c, d) 2.250 v (xvref [2:0] = 100, a vdd = 5.0 v) 3.700 v (xvref [2:0] = 010) 0.0 v current drive 5 ma mute click (muted output, unmuted midscale dac output) 5 mv 1 guaranteed by design; not production tested. table 10. static digital specifications parameter min typ max unit high level input voltage (v ih ), digital inputs 0.65 dv dd v low level input voltage (v il ) 0.35 dv dd v high level output voltage (v oh ), i oh = 2 ma 0.90 dv dd v low level output voltage (v ol ), i ol = 2 ma 0.10 dv dd v input leakage current ?10 +10 a output leakage current ?10 +10 a input/output pin capacitance 7.5 pf table 11. power supply parameter min typ max unit power supply rangeanalog (av dd ) 10% 4.5 5.5 v power supply rangedigital (dv dd ) 10% 2.97 3.63 v power dissipationanalog (av dd )/digital (dv dd ) 275/132 mw analog supply currentanalog (av dd ) 43 ma digital supply currentdigital (dv dd ) 40 ma power supply rejection (100 mv p-p signal @ 1 khz) 40 db table 12. d3 power-down savings parameter dv dd av dd unit function node 0.5 0.0 ma dac 6.2 9.0 ma adc 8.0 8.0 ma mixer 0.0 15 ma
ad1981hd rev. 0 | page 7 of 16 absolute maximum ratings table 13. power supply min max unit digital (dv dd ) ?0.3 +3.6 v analog (av dd ) ?0.3 +6.0 v input current (except supply pins) 10.0 ma analog input voltage (signal pins) ?0.3 av dd + 0.3 v digital input voltage (signal pins) ?0.3 dv dd + 0.3 v ambient temperature (operating) commercial 0c 70c c industrial C40c +85c c storage temperature ?65c +150c c stresses greater than those listed under solute aimum atings ma cause ermanent damage to the deice. this is a stress rating onl functional oeration of the deice at these or an other conditions aoe those indicated in the oerational section of this secification is not imlied. osure to asolute maimum rating conditions for etended eriods ma affect deice reliailit. environmental conditions ambient temperature rating t amb t case (pd ca ) where: t case is the case temperature in c pd is the power dissipation in w ca is the thermal resistance (case-to-ambient) table 14. thermal resistance package ja 1 jc 2 ca lqfp 76.2c/w 17c/w 59.2c/w 1 ja is the thermal resistance (junction-to-ambient). 2 jc is the thermal resistance (junction-to-case). esd caution esd (electrostatic discharge) sensitive device. electrosta tic charges as high as 4000 v readily accumulate on the human body and test equipment and can discharge without de tection. although th is product features proprietary esd protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. therefore, proper esd precautions are recommended to avoid performance degradation or loss of functionality.
ad1981hd rev. 0 | page 8 of 16 pin configuration and fu nction descriptions 48 s/pdif_out 47 eapd 46 nc 45 nc 44 gpio_1/js_ 0 43 gpio_0/js_1 42 av ss 41 port-a_r 40 nc 39 port-a_l 38 av dd 37 mono_out 35 port-d_l 34 sense_b/src_a 33 nc 30 mic_bias-f 31 nc 32 mic_bias-d 36 port-d_r 29 mic_bias-c 28 mic_bias-b 27 vref_filt 25 av dd 26 av ss 2 gpio_2 3 gpio_3 4 dv ss 7 dv ss 6 bit_clk 5 sdata_out 1 dv dd 8 sdata_in 9 dv dd 10 sync 12 pc beep 11 reset nc = no connect 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 ad1981hd top view (not to scale) 04321-002 figure 3. pin configuration table 15. pin function descriptions mnemonic pin no. i/o description sdata_out 5 i hd audio link seri al data output. codec input stream. bit_clk 6 i hd audio link bit clock input. 24 mhz. sdata_in 8 i/o hd audio link se rial data input. codec output stream. sync 10 i hd audio link frame sync. reset # 11 i hd audio link reset. master hardware reset. table 16. digital input/output pin function descriptions mnemonic pin no. i/o description gpio_2 2 i/o general-purpose input/ output. digital signal used to sense/control external circuits. gpio_3 3 i/o general-purpose input/ output. digital signal used to sense/control external circuits. gpio_0/js_1 43 i/o gpio_0general-purpos e input/output. digital signal used to sense/control ex ternal circuits. js_1classic (dc) jack sense fo r headphone out pins. low indicates that nothing is plugged into the jack; high indicates that a peripheral is plugged into the jack. gpio_1/js_0 44 i/o gpio_1general-purpos e input/output. digital signal used to sense/control ex ternal circuits js_0classic (dc) jack sense for line out pins. low indicates that nothing is plugged into the jack; high indicates that a periph eral is plugged into the jack. sense_a/src_b 13 i/o sense_ajack sense aCd input. for use with isolated switches on audio jacks. 1 sense_b/src_a 34 i/o sense_bjack sense eCf input. for use with isolated switches on audio jacks. 1 eapd 47 o external amplifier power-down output. s/pdif_out 48 o s/pdif output. 1 to reduce sense_a/b static current draw, connect a single 2.69 k resistor between pins 13 and 34. remove the resistors from p ins 33 and 13 to av dd .
ad1981hd rev. 0 | page 9 of 16 table 17. analog input/output pin function descriptions mnemonic pin no. i/o channel description function 1 pc beep 12 i n/a analog input for pc beep pass-through, even while in reset. li port-e_l 14 i left line input (typically auxiliary input). port-e_r 15 i right line input (t ypically auxiliary input). li port-f_l 16 i/o left multifunction analog i/o jack (typically rear microphone). mic, li, lo port-f_r 17 i/o right multifunction analog i/o ja ck (typically rear microphone). mic, li, lo cd_l 18 i left cd input, left channel. li cd_gnd 19 i ground cd input, ground. li cd_r 20 i right cd input, right channel. li port-b _l 21 i left multifunction analog i/o jack (typically front microphone). mic, li port-b_r 22 i right multifunction analog i/o jack (typically front microphone). mic, li port-c_l 23 i/o left multifunct ion analog i/o jack (typically rear line input). mic, li, lo port-c_r 24 i/o right multifunction analog i/o ja ck (typically rear line input). mic, li, lo port-d_l 35 i/o left multifunctio n analog i/o jack (typically re ar line output). mic, li, lo port-d_r 36 i/o right multifunction analog i/o ja ck (typically rear line output). mic, li, lo mono_out 37 o - monaural output to telephony subs ystem speakerphone. lo port-a_l 39 o left headphone output, left channel. lo, hp port-a_r 41 o right headphone output, right channel. lo, hp 1 micmicrophone capable, includes programmable mic_bias pins an d integrated boost amplifier; liline level analog inputs; lo l ine level analog outputs; hpheadphone support, includes integrated headphone amplifier. table 18. filter/reference pin function descriptions mnemonic pin no. i/o description vref_filt 27 o voltage reference filter. mic_bias-b 28 o programmable microphone bias o utput. intended for connection to port b. mic_bias-c 29 o programmable microphone bias o utput. intended for connection to port c. mic_bias-f 30 o programmable microphone bias o utput. intended for connection to port f. mic_bias-d 32 o programmable microphone bias o utput. intended for connection to port d. table 19. power and ground pin function descriptions mnemonic pin no. i/o description dv ss 4, 7 i digital supply return (ground). dv dd 1, 9 i digital supply voltage (3.3 v). av ss 26, 42 i analog supply return (ground). av dd 25, 38 i analog supply voltage (5.0 v). av dd supplies should be well filtered becaus e supply noise degrades audio performance.
ad1981hd rev. 0 | page 10 of 16 hd audio codec information table 20. widget list and descriptions nid name type id type description 00 root x root device identification. 01 function x function designates this device as an audio codec. 02 s/pdif 0 audio output designates the code c s/pdif digital stream output interface. 03 front dac 0 audio output designates the pl ayback channel digital/audio converters. 04 record adc 1 audio input designates the record channel audio/digital converters. 05 port-d (line out) 4 pin complex port-d pin dri vers. typically used as rear panel line output. 06 port-a (headphone out) 4 pin complex port-a pin drivers. typically used as front panel headphone output. 07 mono_out 4 pin complex monaural output pin driver. typica lly used to drive an internal speaker or as a microphone selector on a telephony system. 08 port-b (front microphone) 4 pin complex port-b pin drivers. typically used as front panel microphone. 09 port-c (line in) 4 pin complex port-c pin driver s. typically used as rear panel line input. 0a s/pdif_out 4 pin complex s/pdif output digital interface. 0b monaural selector 3 audio selector chooses which signals drive the monaural output mixer and pin. 0c microphone mixer 2 audio mixer allows selective mixing of the fr ont/rear microphone sources to a single combined signal. 0d pc beep selector 3 audio selector selects between the digital beep generator and the analog pc beep pin as the source for the analog mixer. 0e analog mixer 2 audio mixer selectively mixes analog input signals into a single signal. 0f monaural mixer 2 audio mixer ster eo-to-monaural mixer for mono_out. 10 digital pc beep 7 beep generator digital pc beep generator. 11 front mix amp 3 audio selector individual gain control for the dac (front) in put to the analog mixer. 12 port-b mix amp 3 audio selector individual gain control for the port -b (front microphone) input to the analog mixer. 13 port-c mix amp 3 audio selector individual gain control for the port -c (line in) input to the analog mixer. 14 analog power-down 5 power widget power control on the analog mixer and associated amplifiers. 15 record selector 3 audio selector chooses which signal is recorded by the record adc. also contains the record gain controls. 16 pc beep in 4 pin complex analog pc beep in pin drivers. this signal is couple d to the outputs while the codec is held in reset. th is may be selected as an input to the analog mixer after reset has been released. 17 port-e (aux in) 4 pin complex port-e pin dr ivers. typically used as auxiliary input. 18 port-f (rear microphone) 4 pin complex port-f pin dr ivers. typically used as rear panel microphone. 19 cd in 4 pin complex cd in pin drivers. 1a port-d mix amp 3 audio selector individual gain control for the po rt d (front) input to the analog mixer. 1b port-e mix amp 3 audio selector individual gain co ntrol for the port e (aux) input to the analog mixer. 1c port-f mix amp 3 audio selector individual gain control for the port f (rear microphone) input to the analog mixer. 1d cd mix amp 3 audio selector individual gain control for the cd input to the analog mixer. 1e front microphone mute 3 audio selector mute contro l for port b (front microphone) into microphone mixer. 1f rear microphone mute 3 audio selector mute control for port f (rear microphone) into the microphone mixer.
ad1981hd rev. 0 | page 11 of 16 table 21. root and function node parameters nid name type id vendor id pid 00 1 revision id pid 02 sub node count pid 04 function group type pid 05 audio f.g. caps pid 08 gpio caps pid 11 00 root x 11d41981 00100200 00010001 01 function x 0002001e 00000001 00010c0c 40000004 1 pid = parameter id. table 22. widget parameters widget caps pcm size, rate stream format pin caps input amp caps con. list len power states processing caps output amp caps vendor- specific nid name pid 09 1 pid 0a pid 0b pid 0c pid 0d pid 0e pid 0f pid 10 pid 12 pid f0 00 root 01 function 000e007f 00000001 00270300 00000009 80053f3d 00000004 02 s/pdif 00030311 00020060 00000005 00000002 03 front dac 00000441 000e007f 00000001 00000000 00000009 00004601 00000010 04 record adc 00100511 0006007f 00000001 00000001 00000009 05 port-d (line out) 00400187 0001173f 00270300 00000002 80053f3d 00000008 06 port-a (headphone out) 00400185 0000001f 00000002 80053f3d 00000008 07 mono_out 00400104 00000010 00000001 80053f3d 08 port-b (front microphone) 00400083 00001727 00270300 00000000 00000008 09 port-c (line in) 00400187 00001737 00270300 00000002 80053f3d 00000008 0a s/pdif_out 00400301 00000010 00000001 0b monaural selector 00300101 00000006 0c microphone mixer 00200101 00000002 0d pc beep selector 0030010c 00000002 800b0f0f 0e analog mixer 00200101 00000008 0f monaural mixer 00200100 00000001 10 digital pc beep 00700000 00000000 11 front mix amp 0030010d 00000001 80051f17 12 port-b mix amp 0030010d 00000001 80051f17 13 port-c mix amp 0030010d 00000001 80051f17 14 analog power-down 00500500 00000006 00000009 15 record selector 0030010d 00000008 80050f00 16 pc beep in 00400000 00000020 00000000 17 port-e (aux in) 00400081 00000027 00000000 00000008 18 port-f (rear microphone) 00400187 00001737 00270300 00000002 80053f3d 00000008 19 cd in 00400001 00000020 00000000 1a port-d mix amp 0030010d 00000001 80051f17 1b port-e mix amp 0030010d 00000001 80051f17 1c port-f mix amp 0030010d 00000001 80051f17 1d cd mix amp 0030010d 00000001 80051f17 1e front microphone mute 0030010d 00000001 80000000 1f rear microphone mute 0030010d 00000001 80000000 1 pid = parameter id. default ssid: bfd10000
ad1981hd rev. 0 | page 12 of 16 table 23. default configuration parameters 31 29 27 23 19 15 8 7 3 30 28 24 20 16 12 8 4 0 location misc. node id name value connector chassis position def. device conn. type color ovrrd. def. assn. sequence 05 port-d (line out) 01014010 jack external rear line out 1/8" jack green 0 1 0 06 port-a (hp out) 0221401f jack external front hp out 1/8" jack green 0 1 f 07 mono out 90130130 fixed internal n/a speaker atapi unknown 1 3 0 08 port-b (front mic) 02a19040 jack external front mic in 1/8" jack pink 0 4 0 09 port-c (line in) 01813041 jack external rear line in 1/8" jack blue 0 4 1 0a s/pdif out 01451020 jack external rear spdif out optical black 0 2 0 16 pc beep in 90f30150 fixed internal n/a other atapi unknown 1 5 0 17 port-e (aux in) 99930144 fixed internal special 3 aux atapi unknown 1 4 4 18 port-f (rear mic) 01a19043 jack external rear mic in 1/8" jack pink 0 4 3 19 cd in 99330142 fixed internal special 3 cd atapi unknown 1 4 2 table 24. widget connection list index 0 1 2 3 4 5 6 7 8 9 nid name nid nid nid nid nid nid nid nid nid nid 2 s/pdif 01 04 3 front dac 4 record adc 15 5 port-d (line out) 03 0e 6 port-a (headphone out) 03 0e 7 mono_out 0f 8 port-b (front microphone) 9 port-c (line in) 03 0e 0a s/pdif_out 02 0b monaural selector 03 0c 09 0e 05 18 0c microphone mixer 1e 1f 0d pc beep selector 10 16 0e analog mixer 0d 11 12 13 1a 1b 1c 1d 0f monaural mixer 0b 10 digital pc beep 11 front mix amp 03 12 port-b mix amp 08 13 port-c mix amp 09 14 analog power-down 0d 0e 10 11 12 13 1a 1b 1c 1d 15 record selector 0c 09 0e 0f 19 05 18 17 16 pc beep in 17 port-e (aux in) 18 port-f (rear microphone) 03 0e 19 cd in 1a port-d mix amp 05 1b port-e mix amp 17 1c port-f mix amp 18 1d cd mix amp 19 1e front microphone mute 08 1f rear microphone mute 18
ad1981hd rev. 0 | page 13 of 16 table 25. widget verb support stream format amplifier gain/mute processing coefficient cofficient index parameter connection select connection list entry processing state sdata_in select power state channel/ stream id pin widget control unsolicited enable pin sense beep generator eapd/btl enable digital converter 1 digital converter 2 get 0xaxx 0xbxx 0xcxx 0xdxx 0xf00 0xf01 0xf02 0xf03 0xf04 0xf05 0xf06 0xf07 0xf08 0xf09 0xf0a 0xf0c 0xf0d nid name type id set 0x2xx 0x3xx 0x4xx 0x5xx --- 0x701 --- 0x703 0x704 0x705 0x706 0x707 0x708 0x709 0x70a 0x70c 0x70d 0x70e 00 ot x y ro 01 function x 22 y 1 y 02 s/pdif 0 y y 1 03 front dac 0 y y y y y 1 yy 04 record adc 1 y y y 1 yy 05 port-d (line out) 4 y yyy yyy y 06 4 y yyy yyy 07 4 y y y y 08 4 y y yyy 09 port-c (line in) 4 y y y y y y y 0a s/pdif_out 4 y y y 0b 3 y y y 0c microphone mixer 2y y 0d pc beep selector 3 y y y y 0e er 2 y y analog mix 0f 2 y y 10 digital pc beep 7 y y 11 front mix amp 3 y y y 12 port-b mix amp 3 y y y 13 port-c mix amp 3 y y y 14 analog power- down 5 y y y 15 record selector 3 y y y y 16 pc beep in 4 y y 17 port-e (aux in) 4 y yyy 18 4 y yyy yyy 19 cd in 4 y y 1a port-d mix amp 3 y y y 1b port-e mix amp 3 y y y 1c port-f mix amp 3 y y y 1d 3 y y y 1e front microphone mute 3y yy 1f rear microphone mute 3y yy 1 unsupported in the ad1981 hd. get verb always returns 0; set verbs ignored. 2 supports adi specific functionality. refer to the ad1981hd programmer's manual for more information. 04321-003 cd mix amp port-a (headphone out) mono_out port-b (front microphone) monaural selector monaural mixer port-f (rear microphone) y y y y y
ad1981hd rev. 0 | page 14 of 16 table 26. widget extended verb support gpi data gpi wake enable gpi unsolicited mask gpi sticky mask gpo data gpio data gpio enable gpio directi on gpio wake mask gpio unsolicited mask gpio sticky mask config def byte 1 (07:00) config def byte 2 (15:08 config def byte 3 (23:16) config def byte 4 (31:24) subsystem id byte 1 (07:00) subsystem id byte 2 (15:08) subsystem id byte 3 (23:16) subsystem id byte 4 (31:24) reset get 0xf10 0xf11 0xf12 0xf13 0xf14 0xf15 0xf16 0xf17 0xf 18 0xf19 0xf1a 0xf1c 0xf20 --- nid name type id set 0x710 0x711 0x712 0x713 0x714 0x715 0x716 0x717 0x718 0x719 0x71a 0x71c 0x71d 0x71e 0x71f 0x720 0x721 0x722 0x723 0x7ff 01 function x y y y 1 y 1 yyyyy 05 port-d (line out) 4 yyyy 06 4 yyyy 07 4 yyyy 08 4 yyyy 09 port-c (line in) 4 yyyy 0a 4 yyyy 16 pc beep in 4 yyyy 17 port-e (aux in) 4 yyyy 18 4 yyyy 19 cd in 4 yyyy 1 unsupported in the ad1981hd. get verb always returns 0; set verbs ignored. 04321-004 s/pdif_out port-a (headphone out) mono_out port-b (frontmicrophone) port-f (rear microphone)
ad1981hd rev. 0 | page 15 of 16 jack presence detection hd audio style jack presence detection the ad1981hd uses two jack sense lines for jack presence detection. combined with the peripheral enumeration engines, this enables software to determine if there is a device plugged into the circuit and what type of device it is. software can also reconfigure jacks and amplifiers as necessary, ensuring proper audio operation and providing jack retasking. jack presence is detected using a resistor tree arrangement outlined in the hd audio specification. up to four jacks can be sensed on a single sense line by using different value resistors for each jack between the sense line and ground (av ss ). jacks must normally have open, isolated switches to use this method of jack presence detection. jack presence is reflected in the hd audio pin widget pin sense verb. the msb (bit 31) indicates the current plugged state of the connected jack. jack change interrupts can be enabled using the unsolicited response verb on each of these nodes. each jack can be set to generate a different value to provide event identification within the software interrupt. there are two methods to connect the codec to the jack presence detection pins. in the first method, use a single 2.69 k 1% resistor between the sense_a and sense_b lines, but no capacitor. in the second method use a single 2.69 k resister between sense_a and av dd and between sense_b and av dd . in the second method, the designer can add up to 1 f of capacitance on each sense line. designers should offer both methods for maximum flexibility. the specific resistor value for each jack is shown in table 27 . use 1% resistors for all jack presence detect circuitry to ensure accurate detection. classic jack presence detection the ad1981hd gpio pins can be used as classic jack sense pins in js_0- and js_1-style operation (similar to ad1981b operation). only two jacks, typically line out and headphone out, are supported in this configuration. the gpio pins can be connected to the left channel wrap-back switch on the jack via a 2.2 k (typical) resistor. the left channel needs a 20 k (typical) resistor-to-analog ground to complete the circuit. this config- uration allows autoconfiguration when other devices are plugged in; for example, when headphones are plugged in, the external speakers are disabled for private listening. table 27. jack sense mapping sense_a sense_b resistor (1% tolerance) name port hd audio no de id name port hd audio node id 5.1 k line out d 0x05 n/a n/a n/a 10.0 k line in c 0x09 n/a n/a n/a 20.0 k front microphone b 0x08 rear microphone f 0x18 39.2 k headphone out a 0x06 aux in e 0x17
ad1981hd rev. 0 | page 16 of 16 outline dimensions compliant to jedec standards ms-026bbc 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 4. 48-lead low profile quad flat package [lqfp] (st-48) dimensions shown in millimeters ordering guide model temperature range package description package option ad1981hdjstz 1 0 c to +70 c 48-lead lqfp, tray version st-48 AD1981HDJSTZ-REEL 0 c to +70 c 48-lead lqfp, reel version st-48 1 z = pb-free part. ? 2005 analog devices, inc. all rights reserved. trademarks and registered trademarks are the prop erty of their respective owners. d04321C0C6/05(0)

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