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digital controlled audio processor S1A0501X01 1 general description the S1A0501X01 is an audio processor for volume/tone/fader control, which is suitable for car radios or hi-fi system. it has a built-in trimmer for user to set a source level. r/l rear output is changable to input in the case of a home audio system for user conveniency, an external equalizer or a noise reduction circuit is selectable. when the S1A0501X01 is used with some sound-effect equip- ment such as graphic equalizer, the internal tone control block of S1A0501X01 can be bypassed for decreasing redundancy. all selections and function controls are designed to be con- trolled by an i 2 c-bus protocol or a general microprocessor interface protocol. features ? 3-input multiplexing ? source level trimmer (selectable input level) ? volume control in 0.6db step ? tone control (internal bass/treble function block with external components) ? source out / volume in (enable ext.graphic eq./ noise reduction equipment) ? loudness / mute ? fader control ( separated for balance ) ? all functions are programmable / controllable via serial i 2 c bus or general micom interface protocol. ordering information device package operating temperature S1A0501X01-s0b0 32 - sop - 450b - 25 c - +75 c 32 - sop - 450b #1
S1A0501X01 digital controlled audio processor 2 block diagram pin configuration 2.2uf each 1.0uf agnd right input 1 - 3 left input 1 - 3 0.47uf 0.0027uf 0.1uf 0.1uf 5.6k 0.47uf 0.0027uf 2.2uf 2.2uf 2.2uf each 0.1uf 0.1uf 1 1 2 3 dgnd vcc each to block 4.7uf rro 4.7uf lro sda stb scl 4.7uf rfo 4.7uf lfo 10uf 10uf 0.1uf 11 10 9 2 13 14 15 28 3 19 18 12 21 20 4 16 27 25 30 31 32 24 26 17 5 22 23 8 6 7 29 1 2 2 voltage reference serial i 2 c bus interface volume bass treble volume bass treble fader fader 5.6k S1A0501X01 cref vcc agnd ltc rsrcout rvolc rin3 rin2 rin1 lvolc lin3 lin2 rtc rvolin lin1 dgnd lfo rro rbc1 rbc2 lbc1 lbc2 lsrcout lvolin lro rfo scl dref stb 1 2 3 4 7 8 9 10 11 12 13 14 5 6 15 32 31 30 29 26 25 24 23 22 21 20 19 28 27 18 sda occ1 occ2 16 17
digital controlled audio processor S1A0501X01 3 pin description pin symbols description 1 vcc power supply 2 cref reference voltage ripple rejection capacitor tab 3 agnd analog ground (0v) 4 ltc left treble capacitor tab 5 rtc right treble capacitor tab 6 rvolin right volume in / external equalizer for right channel 7 rsrcout right source out / external equalizer for right channel 8 rvolc right volume loudness capacitor tab 9 rin3 right audio input3 10 rin2 right audio input2 11 rin1 right audio input1 12 lvolc left volume loudness capacitor tab 13 lin3 left audio input3 14 lin2 left audio input2 15 lin1 left audio input1 16 occ1 offset cancelling capacitor tab1 17 occ2 offset cancelling capacitor tab2 18 lvolin left volume in / external equalizer for left channel 19 lsrcout left source out / external equalizer for left channel 20 lbc2 left bass capacitor tab2 21 lbc1 left bass capacitor tab1 22 rbc2 right bass capacitor tab2 23 rbc1 right bass capacitor tab1 24 rro right rear audio output 25 lro left rear audio output 26 rfo right front audio output 27 lfo left front audio output 28 dgnd digital ground (0v) 29 dref internally-generated digital power stabilization capacitor tab 30 sda data signal input of i 2 c bus 31 scl clock signal input of i 2 c bus 32 stb strobe signal input
S1A0501X01 digital controlled audio processor 4 absolute maximum ratings electrical characteristics electrical characteristics (vi = 1vrms/1khz, ta=25 c, vcc=13.2v typ) parameters symbols value unit supply voltage vccmax 15.0 v max.power dissipation pdmax 1000 mw max.operating temperature topr -25 to +75 max.storage temperature tstg - 40 to +125 parameters test conditions specifications unit min typ max operating voltage - 6.0 - 15.0 v supply current vi=0 6.0 10.0 14.0 ma input dynamic vcc=13.2v, output t.h.d.=0.1% 6.0 - - vp-p input crosstalk vi=1vrms,1khz, 20hz-20khz bpf - - -89.0 db trimming range - -5.4 -6.0 - db channel crosstalk vi=1vrms,1khz, 20hz-20khz bpf - - -89.0 db channel balance vi=1vrms,1khz -2.0 - 2.0 db voltage gain vi=1vrms,1khz, volume=max -2.0 0.0 2.0 db s/n ratio vi=1vrms,1khz, 20hz-20khz bpf - 92 db t.h.d. vi=1vrms,1khz, volume=max - 0.005 0.01 % loudness boost vi=1vrms,100hz 0.2 - 10.5 db max.volume attenuation vi=1vrms,1khz, volume=min -76.2 -74.2 db bass control range vi=1vrms,100hz, bass= min/max -14 - 14 db treble control range vi=1vrms,10khz, treble= min/max -12 - 12 db front/rear balance vi=1vrms,1khz, fader= middle - - 1.0 db front/rear control range vi=1vrms,1khz, fader= min - - -38.75 db frequency response -3db 20 - 20000 hz mute attenuation vi=1vrms,1khz, 20hz-20 khz bpf -100 - -90 db
digital controlled audio processor S1A0501X01 5 serial bus interface protocol - the i 2 c bus timing diagram of i 2 c bus protocol i 2 c bus byte format of S1A0501X01 s = a start condition slave address = chip address ( 10000000b ) ack = acknowledge ( from slave ) sub address = transferred data1 ( assigning function ) data = transferred data2 ( assigning operation ) p = a stop condition stb signal 'low '= always 'low' when i 2 c bus protocol (tied to 'gnd'). max.scl frequency 200khz start 1 - 8 9 10 - 17 18 19 - 26 27 stop s slave address ack sub address ack data ack p 1 2 3 scl sda 25 26 27 start stop stb
S1A0501X01 digital controlled audio processor 6 acknowledge on the i 2 c bus interface protocol software specification of S1A0501X01 << byte organization - i 2 c bus transmission >> cf> 'rearin control' of misc.control is a not-supported function in present version of S1A0501X01. so this bit should be always ' high ' when transferring control data. functions sub data byte remarks address msb b6 b5 b4 b3 b2 b1 lsb input control select 0 0 0 x x x x x ssel 1 ssel 0 x x x trimmer set sts1 sts0 x x x loudness sld x x x volume control fine 0 0 1 x x x x x svf3 svf2 svf1 svf0 x coarse svc2 svc1 svc0 x tone control bass 0 1 0 x x x x x sb3 sb2 sb1 sb0 sb3 , st3 : treble st3 st2 st1 st0 oost / cut fader control left front 0 1 1 x x x x x left rear 1 0 0 x x x x x right front 1 0 1 x x x x x sf4 sf3 sf2 sf1 sf0 x x x right rear 1 1 0 x x x x x misc. control rearin con 1 1 1 x x x x x sric x x x x x set mute smut e x x x x x 'high' ext.eq seq x x x x x sda msb acknowledgement signal form receiver resistive high from master scl start 1 2 3 7 8 9
digital controlled audio processor S1A0501X01 7 software specification ? input select / trimmer setting / loudness control function subaddress data byte value remark input select byte format b7 b6 b5 b7 b6 b5 b4 b3 b2 b1 b0 0 0 0 0 0 x x x input1 0 1 x x x input2 1 0 x x x input3 1 1 x x x *input4 not used trimmer setting 0 0 x x x 0 db 0 1 x x x - 2 db 2 db step 1 0 x x x - 4 db (4 ) 1 1 x x x - 6 db loudness 0 x x x on 1 x x x off
S1A0501X01 digital controlled audio processor 8 software specification - volume control function subaddress data byte value remark volume control byte format b7 b6 b5 b7 b6 b5 b4 b3 b2 b1 b0 0 0 1 0 0 0 0 x 0 db 0 0 0 1 x 0.6 db 0 0 1 0 x 1.2 db 0 0 1 1 x 1.8 db 0.6 db step 0 1 0 0 x 2.4 db (16) 0 1 0 1 x 3.0 db 0 1 1 0 x 3.6 db 0 1 1 1 x 4.2 db 1 0 0 0 x 4.8 db 1 0 0 1 x 5.4 db 1 0 1 0 x 6.0 db 1 0 1 1 x 6.6 db 1 1 0 0 x 7.2 db 1 1 0 1 x 7.8 db 1 1 1 0 x 8.4 db 1 1 1 1 x 9.0 db 0 0 0 x 0 db 0 0 1 x 9.6 db 0 1 0 x 19.2 db 1 1 1 x 28.8 db 9.6 db step 1 0 0 x 38.4 db (8) 1 0 1 x 48.0 db 1 1 0 x 57.6 db 1 1 1 x 67.2 db
digital controlled audio processor S1A0501X01 9 software specification - tone control : bass boost/cut1 function subaddress data byte value remark bass control byte format b7 b6 b5 b7 b6 b5 b4 b3 b2 b1 b0 0 1 0 0 0 0 0 - 14 db 2 db step 0 0 0 1 - 12 db 0 0 1 0 - 10 db 0 0 1 1 - 8 db 0 1 0 0 - 6 db 0 1 0 1 - 4 db 0 1 1 0 - 2 db 0 1 1 1 0 db 1 1 1 1 0 db 1 1 1 0 2 db 1 1 0 1 4 db 1 1 0 0 6 db 1 0 1 1 8 db 1 0 1 0 10 db 1 0 0 1 12 db 1 0 0 0 14 db
S1A0501X01 digital controlled audio processor 10 software specification - tone control : treble boost/cut function subaddress data byte value remark treble control byte format b7 b6 b5 b7 b6 b5 b4 b3 b2 b1 b0 0 1 0 0 0 0 0 - 11.9 db 1.7 db step 0 0 0 1 - 10.2 db 0 0 1 0 - 8.5 db 0 0 1 1 - 6.8 db 0 1 0 0 - 5.1 db 0 1 0 1 - 3.4 db 0 1 1 0 - 1.7 db 0 1 1 1 0 db 1 1 1 1 0 db 1 1 1 0 1.7 db 1 1 0 1 3.4 db 1 1 0 0 5.1 db 1 0 1 1 6.8 db 1 0 1 0 8.5 db 1 0 0 1 10.2 db 1 0 0 0 11.9 db
digital controlled audio processor S1A0501X01 11 software specification - fader / miscellaneous control data byte byte format function subaddress data byte value remark byte format b7 b6 b5 b7 b6 b5 b4 b3 b2 b1 b0 fader control 0 1 1 left front 1 0 0 left rear 1 0 1 right front 1 1 0 right rear 0 0 0 x x x 0 db 0 0 1 x x x - 1.25 db 0 1 0 x x x - 2.5 db 0 1 1 x x x - 3.75 db 1.25 db 1 0 0 x x x - 5.0 db step 1 0 1 x x x - 6.25 db (8) 1 1 0 x x x - 7.5 db 1 1 1 x x x - 8.75 db 0 0 x x x 0 db 0 1 x x x - 10 db 10 db step 1 0 x x x - 20 db (4) 1 1 x x x - 30 db rear-in 1 1 1 0 x x x x x enable should be control 1 x x x x x disable 'disable' mute 0 x x x x x on 1 x x x x x off external 0 x x x x x enable equalizer 1 x x x x x disable
S1A0501X01 digital controlled audio processor 12 serial bus interface protocol - the general case timing diagram of general micom interface bus protocol general micom interface bus byte format of S1A0501X01 chip select code = same as i 2 c bus slave address ( 1000000 b ) x = don't care bit (not used bit) function code = transferred data1 ( assigning function ) data = transferred data2 ( assigning operation ) stb signal 'low ' = chip not selected. stb signal 'high ' = chip selected. allowed strobe pulse width (maximum) 6.0ms bit stream 1 - 7 8 9 - 16 17 - 24 meanings chip select code function code data 1 2 3 scl sda 22 23 24 stb
digital controlled audio processor S1A0501X01 13 volume step vs output level input : 1 vrms vcc=12v l-on l-off balance & fader step vs output level input : 1 vrms vcc=12v balance/fader(db) l-out r-out samsung electronics kb22501 evt4 vr or mute att ??o (13v) input : 1vrms color line style thick data axis yellow solid 2 anlr.ampl left red solid 2 anlr.ampl left -100 +0 -80 -60 -40 -20 d b r 10 20k 20 50 100 200 500 1k 2k 5k 10k hz ? : vr-min att 2 , ?? : mute att 2 volume & mute attenuation input : 1 vrms vcc=12v volume attenuation mute attenuation samsung electronics kb22501 evt4 tone ??o (12v) input : 300mv , vr max color line style thick data axis blue solid 1 anlr.level a left cyan solid 2 anlr.level a left green solid 2 anlr.level a left -15 +15 -10 -5 +0 +5 +10 d b r 10 30k 20 50 100 200 500 1k 2k 5k 10k 20k hz bass & treble boost / cut input : 3 0 0 mvrms, volume=max vcc=12v samsung electronics kb22501 evt4 loudness ??o (12v) input : 300mv , vr -37.8db -50 +0 -40 -30 -20 -10 d b r 10 30k 20 50 100 200 500 1k 2k 5k 10k 20k hz loudness boost input : 3 0 0 mvrms, volume=-37.8db vcc=12v samsung electronics kb22501 evt4 thd ??o (13v) input : 1vrms 0.01 0.05 0.02 0.03 0.04 % 10 20k 20 50 100 200 500 1k 2k 5k 10k hz ? : vr -20db , ?? : vr 0db total harmonic distortion(t.h.d.) input : 1 vrms vcc=12v volume - 2 0 db volume 0 db
S1A0501X01 digital controlled audio processor 14 samsung electronics kb22501 function cross talk ??o (13v) input : 1vrms color line style thick data axis -100 +0 -80 -60 -40 -20 d b r 10 20k 20 50 100 200 500 1k 2k 5k 10k hz input crosstalk selected input : 1 vrms, otherwise : short vcc=12v samsung electronics kb22501 l/r separation ??o (13v) input : 1vrms -100 +0 -80 -60 -40 -20 d b r 10 20k 20 50 100 200 500 1k 2k 5k 10k hz l/r channel separation selected channel input : 1 vrms the other : short, vcc=12v
digital controlled audio processor S1A0501X01 15 application circuit 1 mode i : 3 inputs - 1 output 0.0027uf 0.47uf vcc 2.2uf 0.0027uf 2.2uf 2.2uf 2.2uf 2.2uf 2.2uf 2.2uf 0.47uf 2.2uf 0.1uf 0.1uf 5.6k 0.1uf 0.1uf 5.6k 4.7uf 4.7uf 4.7uf 4.7uf 1.0uf micom control data 100uf 0.1uf vdd 100k 100k 0.1uf + + + + + + + + + + + v o (rr) v o (lf) 10uf 10uf S1A0501X01 cref vcc agnd ltc rsrcout rvolc rin3 rin2 rin1 lvolc lin3 lin2 rtc rvolin lin1 dgnd lfo rro rbc1 rbc2 lbc1 lbc2 lsrcout lvolin lro rfo scl dref stb 1 2 3 4 7 8 9 10 11 12 13 14 5 6 15 32 31 30 29 26 25 24 23 22 21 20 19 28 27 18 sda occ1 occ2 16 17 + + rin3 rin2 + rin1 lin3 lin2 lin1 + v o (rf) v o (lr)
S1A0501X01 digital controlled audio processor 16 application circuit 2 mode ii : 3 inputs - 1 output w/ ext.equipment cf> let the microprocessor set ? seq ? signal to 0, if an external device is an audio-signal controlled processor such as a graphic equalizer. 0.0027uf 0.47uf vcc 2.2uf 0.0027uf 2.2uf 2.2uf 2.2uf 2.2uf 2.2uf 2.2uf 0.47uf 2.2uf 0.1uf 0.1uf 5.6k 0.1uf 0.1uf 5.6k 4.7uf 4.7uf 4.7uf 4.7uf 1.0uf micom control data 100uf 0.1uf vdd 100k 100k 0.1uf + + + + + + + + + + v o (rr) v o (lf) 10uf 10uf S1A0501X01 cref vcc agnd ltc rsrcout rvolc rin3 rin2 rin1 lvolc lin3 lin2 rtc rvolin lin1 dgnd lfo rro rbc1 rbc2 lbc1 lbc2 lsrcout lvolin lro rfo scl dref stb 1 2 3 4 7 8 9 10 11 12 13 14 5 6 15 32 31 30 29 26 25 24 23 22 21 20 19 28 27 18 sda occ1 occ2 16 17 + + rin3 rin2 + rin1 lin3 lin2 lin1 + v o (rf) v o (lr) external equipment external equipment + + + 2.2uf
digital controlled audio processor S1A0501X01 17 application circuit 3 mode iii : 3 inputs - 1 output (not i 2 c bus protocol) 0.0027uf 0.47uf vcc 2.2uf 0.0027uf 2.2uf 2.2uf 2.2uf 2.2uf 2.2uf 2.2uf 0.47uf 2.2uf 0.1uf 0.1uf 5.6k 0.1uf 0.1uf 5.6k 4.7uf 4.7uf 4.7uf 4.7uf 1.0uf micom control data 100uf 0.1uf vdd 100k 100k 0.1uf + + + + + + + + + + + v o (rr) v o (lf) 10uf 10uf S1A0501X01 cref vcc agnd ltc rsrcout rvolc rin3 rin2 rin1 lvolc lin3 lin2 rtc rvolin lin1 dgnd lfo rro rbc1 rbc2 lbc1 lbc2 lsrcout lvolin lro rfo scl dref stb 1 2 3 4 7 8 9 10 11 12 13 14 5 6 15 32 31 30 29 26 25 24 23 22 21 20 19 28 27 18 sda occ1 occ2 16 17 + + rin3 rin2 + rin1 lin3 lin2 lin1 + v o (rf) v o (lr) 100k
S1A0501X01 digital controlled audio processor 18 notes

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