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specifications of any and all sanyo semiconductor co.,l td. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer ' s products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer ' sproductsor equipment. any and all sanyo semiconductor co.,ltd. products described or contained herein are, with regard to "standard application", intended for the use as general el ectronics equipment (home appliances, av equipment, communication device, office equipment, industrial equ ipment etc.). the products mentioned herein shall not be intended for use for any "special application" (medica l equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, t ransportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of re liability and can directly threaten human lives in case of failure or malfunction of the product or may cause har m to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for app lications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. if there is n o consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 41807 ms pc b8-6946,b8-6871 no.7955-1/21 LA72680M overview the la72670bm is a hifi sound signa l processor with a built-in sif demodulation and japan tv sound multiplex demodulation on a single chip. full adjustment free operation is reali zed by the ic?s internal automatic adjustment and trimming function, etc. functions ? hifi sound signal processor ? hifi head amp ? sif modulation ? japan multiplex modulation specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum power supply voltage 1 v cc h max 9.6 v maximum power supply voltage 2 v cc l max 6v always power supply voltage v cc a max 6v allowable power dissipation pd max ta=70 c * 1300 mw operating ambient temperature topr -10 to +70 c storage ambient temperature tstg -55 to +150 c * on board: 114.3mm 76.1mm 1.6mm, glass epoxy board. monolithic linear ic japan tv sound multiplex demodulation hifi sound signal processor orderin g numbe r : en7955a
LA72680M no.7955-2/21 operating conditions at ta = 25 c parameter symbol conditions ratings unit recommended operating voltage 1 v cc h 9v recommended operating voltage 2 v cc l 5v recommended always voltage v cc a 5v allowable operating voltage 1 v cc h op1 8.5 to 9.5 v allowable operating voltage 2 v cc l op2 4.8 to 5.3 v allowable operating always voltage v cc a op3 4.5 to 5.5 v electrical characteristics at ta = 25 c, v cc h=9v, v cc l=5v, v cc a=5v ratings parameter symbol conditions min typ max unit current dissipation rec&ee 9v i cc r1 no signal, inflow current at pin 3/54 g1d8d7:00 42 50 58 ma current dissipation ee 5v i cc e1 no signal, inflow current at pin 15/32/36/46 g1d8d7:00 63 75 87 ma current dissipation rec 5v i cc r2 no signal, inflow current at pin 15/32/36/46 g1d8d7:00, g1d4:1 89 105 121 ma current dissipation pb 9v i cc p1 no signal, inflow current at pin 3/54 g1d8d7:01 9 11 13 ma current dissipation pb 5v i cc p2 no signal, inflow current at pin 15/32/36/46 g1d8d7:01 76 90 104 ma current dissipation always power supply i cc al no signal, inflow current at pin 5, mute h at pin 49 0.8 1.0 1.2 ma ee through (line in to line out), ee mode, f=1khz, l/r-ch output level 1 v o 1 v in =-28.2dbv, gain=1 (g3 d4:0) -10.5 -9 -7.5 dbv output level 2 v o 2 v in =-28.2dbv, gain=2 (g3 d4:1) -9.5 -8 -6.5 dbv output distortion thd v in =-28.2dbv, gain1, 2 0.05 0.15 % channel gain difference ? v o v in =-28.2dbv, gain1, 2 -1 0 1 db maximum output level v o m thd=1%, gain1, 2 7 8.5 dbv output noise level vno rg=1k ? , jis-a filter, gain1 -89 -85 dbv mute attenuation value mu v in =-18.2dbv -91 -80 db input switch cross-talk ct v in =-18.2dbv -75 -68 db normal output (line in to normal out), ee mode, f=1khz output level for normal v o nor v in =-28.2dbv -22.5 -21.5 -20.5 dbv rfc output (normal in to rfc out), f=1khz output level v o r v in =-21.2dbv, g2d4d3:10 -11.0 -9.5 -8.0 dbv output distortion thdr v in =-21.2dbv, g2d4d3:10 0.05 0.2 % alc level (1) v o ar1 vin=-11.2dbv, g2d4d3:10 -7.0 -5.5 -4.0 dbv alc distortion (1) thdar1 v in =-11.2dbv, g2d4d3:10 0.3 0.5 % alc level (2) v o ar2 v in = -11.2dbv, g2d4d3:10, g4d2:1 -3.0 -1.5 0 dbv alc distortion (2) thdar2 v in = -11.2dbv, g2d4d3:10, g4d2:1 0.1 0.3 % line amp (normal in to line out), ee mode, f=1khz, left channel and right channel line amp gain gvl v in =-21dbv, gain=1 mode (g2d4:0) 11 12 13 db rec system (line in to vco out), f=1khz free-running frequency l f o l input no signal 1.294 1.300 1.306 mhz free-running frequency r f o r input no signal 1.694 1.700 1.706 mhz standard frequency deviation l&r dev v in =-28.2dbv 46 50 54 khz carrier output level lch vfol non modulation 380 440 500 mvp-p fm r/lch mix ratio 1 mix1 non modulatio n, vfor/vfol, g3d7d6;01 7.1 7.6 8.1 db fm r/lch mix ratio 2 mix2 non modulatio n, vfor/vfol, g3d7d6;00 8.1 8.6 9.1 db fm r/lch mix ratio 3 mix3 non modulatio n, vfor/vfol, g3d7d6;10 9.1 9.6 10.1 db fm r/lch mix ratio 4 mix4 non modulation, vfor/vfol, g3d7d6;11 10.1 10.6 11.1 db continued on next page.
LA72680M no.7955-3/21 continued from preceding page. ratings parameter symbol conditions min typ max unit fm modulation system (pb fm in to line out), pb mode, fm standard input=300mvp-p(r/lch ratio=1:1) output level lch v o pl fc=1.350khz, fm=1khz, gain=1 (g3d4:0) -11 -9 -7 dbv output level rch v o pr fc=1.7mhz50khz, fm=1khz, gain=1 (g3d4:0) -11 -9 -7 dbv output level difference vdem fc=1.3mhz50khz, fm=1khz fc=1.7mhz50khz, fm=1khz lch-rch, gain=1 (g3d4:0) -1.5 0 1.5 db output distortion lch thdpl fc=1.3 mhz50khz, fm=1khz,din 0.3 0.5 % output distortion rch thdpr fc=1.7 mhz50khz, fm=1khz, din 0.3 0.5 % do detector / hifi detector pb mode(do det : fc=1.3mhz / hifi det : fc=1.3mhz & 1.7mhz), do detection level doc the ratio with standard input pin 31=300mvp-p -26 -23 db do detection hysteresis doch 0.5 3 5 db hifi recovery delay time hidel the delay time that is changed from normal to hifi. 110 125 140 ms hifi detection dc output 1 vtrs1 pin 34 input level=100mvp-p 2.1 2.6 3.1 v hifi detection dc output 2 vtrs2 pin 34 input level=300mvp-p 3.3 3.8 4.3 v hifi detection dc output 3 vtrs3 pin 34 input level=1vp-p 4.3 4.8 5.3 v normal detection dc output nordc pin 34 input level=0mvp-p 0.4 v hold pulse occurrence pb mode hold pulse delay time hpd audio head pulse in 0.8 1.0 1.2 s hold pulse width hpw audio head pulse in 7.2 9.0 10.8 s band pass filter pb mode, pb in = 150mvp-p(r/l mix ratio 1:1) 1.3mhz bpf monitor level v13 34pin input level =60mvp-p,g2d2d1:01 80 100 120 mvp-p 1.7mhz bpf monitor level v17 34pin input level =60mvp-p,g2d2d1:01 60 80 100 mvp-p 1.3mhz bpf frequency characteristics 1 l115n level difference between 1.15m/1.3mhz g2d2d1;01 -13 -5 db 1.3mhz bpf frequency characteristics 2 l145n level difference between 1.45m/1.3mhz g2d2d1;01 -13 -5 db 1.3mhz bpf frequency characteristics 3 l155n level difference between 1.55m/1.3mhz g2d2d1;01 -20 -10 db 1.7mhz bpf frequency characteristics 1 r145n level difference between 1.45m/1.7mhz g2d2d1;10 -15 -5 db 1.7mhz bpf frequency characteristics 2 r155n level difference between 1.55m/1.7mhz g2d2d1;10 -9 -3 db 1.7mhz bpf frequency characteristics 3 r185n level difference between 1.85m/1.7mhz g2d2d1;10 -9 -3 db playback head amp system (pb head amp in to out), pb mode voltage gain gvp v in =100 vp-p, f=1.5mhz, ch1&2 66 69 72 db voltage gain difference ch1/ch2 ? gvp -2 0 2 db ep gain boost value ? gep v in =100 vp-p, f=1.5mhz 1 2 3.2 db frequency characteristics ? fp v in =100 vp-p, f=1.8m/1.0mhz, ch1&2 -3 -1 1 db input conversion noise voltage vninp the value(1 / gvp) of 1.1mhz lpf output level 1.7 2 vr m s output dc offset ? v o dc ch1/ch2 -30 0 30 mv rec amp system rec mode, the external resistor at pin 28 = 2.7k ? rec current i o r inflow current at pin 26 34 37 40 ma cross modulation distortion 0.4mhz component cmdo4 rch carrier level standard -48 -40 db cross modulation distortion 0.9mhz component cmdo9 rch carrier level standard -55 -40 db current ratio +2db i o r+2db p23:0v,g4d6d5:01 1.6 2.0 2.4 db current ratio -2db i o r-2db p23:0v,g4d6d5:10 -2.4 -2.0 -1.6 db mute attenuation value i o rmu rec mute on(pin 17:5v) -40 db continued on next page.
LA72680M no.7955-4/21 continued from preceding page. ratings parameter symbol conditions min typ max unit sif system (sif in to sif out), ee/rec mode input level v i lim fc=4.5mhz 80 90 100 db v tv multiplex demodulation system ee/rec mode, l/rch, line amp gain(1) deviation of sif input mono: 100% 25khz (fm=400hz) pre-emphasis on mono output level v o mn fm=1khz,100% modulation, pre-emphasis off -7 -5.5 -4 dbv output l/r level difference ? v o mn fm=1khz,100% modulation, pre-emphasis off -1.5 0 1.5 db mono distortion thdm fm=1khz,100% modulation, pre-emphasis off 0.2 0.5 % mono frequency characteristics 1 fcm1 fm=10khz,100% modulation, pre-emphasis off -17 -14 -11 db mono s/n snm non modulation,15khz lpf 50 db tereo output level v o st fm=1khz, 100% modulation, 15khz lpf -7.5 -5.5 -3.5 dbv stereo distortion thds fm=1khz, 100% modulation, 15khz lpf 0.3 1.0 % stereo s/n sns sub carrier (non modulation) + cue(stereo) ,15khz lpf 45 db main output level voma fm=1khz, 100% modulation, cue(bilingual), 15khz lpf -7 -5.5 -4 db main distortion thdma fm=1khz, 100% modulation, cue(bilingual), 15khz lpf 0.2 0.5 % main s/n snma sub carrier(non modulation) + cue(bilingual), 15khz lpf 50 db sub output level v o su fm=1khz, 100% modulat ion, cue(bilingual), 15khz lpf -7.5 -5.5 -3.5 dbv sub s/n snsu sub carrier (non modulation) + cue(bilingual) ,15khz lpf 45 db sub frequency characteristic s fcsu2 fm=10khz, 60% modul ation, cue(bilingual), 15khz lpf -20 -16 -12 db sub distortion thdsu fm=1khz, 100% modulation, cue(bilingual), 15khz lpf 0.5 2.0 % stereo separation l r sepr l:fm=1khz, 60%modulation, cue(stereo), 15khz-lpf 25 30 db stereo separation r l sepl r:fm=1khz, 60%m odulation, cue(stereo), 15khz-lpf 25 30 db cross-talk main sub ctsub main:fm=1khz, 100%modulation, cue(bilingual), 15khz lpf 35 50 db cross-talk sub main ctma sub:fm=1 khz, 100%modulation, cue(bilingual), 15khz lpf 45 55 db stay behind carrier level (s) clsu main=0%, sub:0%(carrier), cue(bilingual) -55 -45 dbv stay behind carrier level (m) clma main=0%, sub:0%(carrier), cue( bilingual) -55 -45 dbv mode detection volt(mono) vledm inpu t=monaural signal 0.7 1.0 1.3 v mode detection volt(st) vledm i nput=stereo signal 1.7 2.0 2.3 v mode detection volt(bil) vledm inpu t=bilingual signal 2.7 3.0 3.3 v just clock output high volt vj ch f=400hz(mono),40%mod. 4.0 v just clock output low volt vjcl f=400hz(mono),10%mod. 1.0 v
LA72680M no.7955-5/21 package dimensions unit : mm (typ) 3255 sanyo : qfp80(14x14) 14.0 14.0 17.2 17.2 0.15 0.1 3.0max 0.25 0.65 (0.83) (2.7) 0.8 1 20 21 40 41 60 80 61
LA72680M no.7955-6/21 block diagram monitor in (r) + + + + + + ext3 in (l) ext2 in (l) ext1 in (l) ext2 in (r) ext3 in (r) ext1 in (r) normal out line out (l) line out (r) moni tor (l) normal in a lways +b to rf mod + 22 f + 10 f + 4.7 f 0.01 f + + + 10 f + + 1 f 4.7 f 4.7 f 1.0k ? 10k ? 0.47 f 1 f v cc (h) 9v mts v cc (9v) a gnd nc nc nc nc nc mts gnd 1 2 3 7 8 9 10 11 12 13 14 15 16 17 18 19 20 60 59 58 57 56 55 54 53 52 50 48 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 37 38 39 40 6 4 5 + + 4.7 f 1 f + 1 f + 1 f 4.7 f 4.7 f 4.7 f 2.2 f 4.5mhz bps sif det in fsc in 3.58mhz 2.2 f + 22 f 1 f + 10 f + 4.7 f 0.01 f 4700pf 0.01 f 0.1 f 0.1 f 1.0k ? just in clock out 0.1 f mute af sw clock data mode out mts monitor hifi tracking dc (normal:low) v cc (l) 5v rec mute 4.7 f 0.01 f 22 f 470 ? 4700pf 2.7k ? + + + + d gnd 10 f 10 f 0.01 f pre gnd 39k ? iim amp pb amp pb amp rec amp rec-h rec-h alc det a gnd a gnd 47 46 45 44 43 42 41 36 51 49 sub demod sub deem fiitfr adj. sif demod pll pipple fiitfr comp sub det r-ch in sel alc mute out sel + l-ch vref env det comp noisf det r-ch bpf l-ch bpf do det comp lim dev vco lpf mix sw noise lim logic hold pulse r-ch pnr aic cue bpf am demod 15khz lpf 15khz ipf 4.5fh trap sub bpf just clk control matrix main deem out sw
LA72680M no.7955-7/21 pin description dc voltage pin no. pin function name ac level function equivalent circuit 1 77 line mute terminal(l) line mute terminal(r) when the power supply v cc is on, the switch of pin 77 and pin 1 is turned to on to reduce the line out noise. in this case, it is necessary to apply 5 fixed dc to pin 5. 10 ? pin77 pin1 2 output terminal for rf modulator dc; 4.2v output terminal for rf modulator. alc level can be settled to -1dbv and off by serial control. 300k ? 10k ? 400 a mute 2.8k ? 3 v cc 9v power supply of line out. 5 always vcc power supply for the noise elimination mute control when power is on. 15 v cc 5v(lch) 5v power supply of lch. 32 v cc 5v 5v power supply of head amp. 36 power supply for logic power supply for logic. 46 v cc 5v(rch) 5v power supply of rch. 54 9v power supply for mts 9v power supply of mts. dc; 2.5v 4 normal input terminal ac; -28.2dbv normal ic output signal is entered and output to line out through output changeover. g4d7/0:0db 1:3db 500 ? 150k ? vref dc; 2.5v 6 normal output terminal ac; -21.2dbv this is connected to input of normal audio ic. 200 ? 320 a dc ; 0v 7 9 11 69 71 73 audio input terminal ext1_in(l) ext2_in(l) ext3_in(l) ext1_in(r) ext2_in(r) ext3_in(r) ac; -28.2dbv audio input terminal. 500 ? 50 a 100k ? continued on next page.
LA72680M no.7955-8/21 continued from preceding page. dc voltage pin no. pin function name ac level function equivalent circuit 8 alc detection terminal for rf converter dc; this is alc detector terminal for rf converter and always ready for operation. 2k ? 40k ? 150 ? 10 25 35 50 70 79 l-gnd headamp-gnd logic-gnd r-gnd mts-gnd audio-gnd 12 74 monitor input terminal(l) monitor input terminal(r) dc ; 2.5v monitor input terminal 200 ? 100 ? vref dc ; 2.2v 13 48 input changeover switch output(l) input changeover switch output(l) ac; -21.2dbv pb/rec switch output to transform rec and pb signals into dc through a coupling capacitor. 40 a 40 a 100 a rec:on pb:on 200 ? 400 ? dc; 2.5v 14 47 alc input terminal(l) alc input terminal(r) ac; -21dbv alc input terminal after passing through a coupling capacitor. 40 a rec:on 80 a pb:on 400 ? 100k ? vref 16 1/2 v cc terminal dc; 2.5v 1/2 v cc terminal. 500 ? 100k ? 40k ? 50k ? 30k ? 15k ? 30k ? 500 ? 500 ? 2k ? continued on next page.
LA72680M no.7955-9/21 continued from preceding page. dc voltage pin no. pin function name ac level function equivalent circuit 17 rec mute terminal dc; unsettled two levels control terminal. hi ; 3.0v to vcc low ; 0v to 1.5v 1k ? 150k ? 100k ? 18 45 nr waiting det terminal(l) nr waiting det terminal(r) terminal for waiting detector. the recommended external capacity is 10 f. 500 ? 5.6k ? 500 ? dc; 2.5v 19 44 20 43 nr waiting filter terminal1(l) nr waiting filter terminal1(r) nr waiting filter terminal2(l) nr waiting filter terminal2(r) ac; (pin 19,pin 44)between gnd;4.7 f (pin 20,pin 43)between gnd;0.01 f pin19,44 22k ? 2.4k ? pin20,43 21 22 42 41 cca reference terminal(l) nr emphasis terminal(l) nr emphasis terminal(r) cca reference terminal(r) dc; 2.5v by connecting 22f between pin 21, pin 41 and gnd, 4700pf between pin 22, pin 42 and gnd, form the nr emphasis. pin22,42 12k ? 39k ? pin21,41 10k ? 10k ? 30k ? 23 hifi/nor selecting terminal (pb) (2)monitor control terminal at pin 34 (ee) in pb mode, pin 23 becomes ?tracking_dc? when inputting hifi audio signal and becomes ?l? when inputting normal signal. in ee mode, this is us ed as the terminal for monitor control of pin 34. low(0 to 0.8v) ; vco mix middle(1.4v to 3.6v) ; lch vco high(4.2v to v cc ) ; rch vco 150k ? 5k ? 500 ? 5e continued on next page.
LA72680M no.7955-10/21 continued from preceding page. dc voltage pin no. pin function name ac level function equivalent circuit 24 27 head amp input terminal (hch) head amp input terminal (lch) dc pb; 2.0v rec; 4.1v head amp inputs (ch1 and ch2) is pb mode. rec- on 4.5ma pb-on 26 rec current amp output terminal current amp output in rec mode. common input terminal in pb mode. v cc 5v 8.3 ? rec-on pb-on 28 current amp adjust terminal dc; 2.4v terminal for adjusting the recording current. 400 ? 2.7k ? pin28 500 a 29 alc detection terminal this is alc detector terminal. alc becomes through switch when pin29 pull up v cc . 1k ? 1k ? 1k ? 2k ? 2.5v 30 hifi/normal detection terminal this terminal is for detecting demodulation noise and output which has passed through the primary hpf(fc=140khz). 300k ? 200 ? 39k ? 4.7 f pin30 continued on next page.
LA72680M no.7955-11/21 continued from preceding page. dc voltage pin no. pin function name ac level function equivalent circuit 31 monitor terminal dc ; 2.5v fm mi x output(low), lch vco(middle), rch vco(high) can be monitored by controlling pin 23 in rec mode. hold and do pulses can be monitored by pin 17 in pb mode. bpf of lch and rch can be monitored by serial control in pb mode. rec-on 500 ? 500 ? 30k ? 33 pb amp output dc; 2.5v output of head amp in pb mode. 100 ? 350 a dc; unsettled 34 pb fm input terminal ac; 350mvp-p (l/r mix) input pin of fm in pb mode. 30k ? 200 a 50k ? 30pf 30pf vref 2.5v vref 37 serial data input terminal 5v 0v hi ; 3.5v to 5v low ; 0v to 1.5v 50 a 500 ? on at ack 38 clk input terminal 5v 0v hi ; 3.5v to 5v low ; 0v to 1.5v 50 a 500 ? continued on next page.
LA72680M ps no.7955-12/21 continued from preceding page. dc voltage pin no. pin function name ac level function equivalent circuit 39 af sw pulse input terminal 50hz/60hz 5v 0v input terminal of af sw pulse. hi ; 3.5v to 5v low ; 0v to 1.5v 2k ? 100k ? 40 mts mode out dc; detection result output for m.t.s. signal. bilingal : 3.0v stereo : 2.0v mono : 1.0v 1k ? 50 a 200 a 49 mute control terminal dc; mute control terminal. 45k ? 50k ? 50k ? 10k ? 40k ? 60k ? 51 fsc in input terminal for fsc (3.58mhz). 1k ? 20k ? 15pf 50 a 20k ? 3.8v 52 pcreg76 dc; 1.2v band gap power supply terminal of m.t.s block. this power supply does not operate in pb mode. 8k ? 1k ? 200k ? 53 62 63 68 76 nc pin continued on next page.
LA72680M ps no.7955-13/21 continued from preceding page. dc voltage pin no. pin function name ac level function equivalent circuit 55 phase comparator(bil.) this detection pin becomes high(4.0v or more) because of detecting bil, when bil signal is input. 56 phase comparator(st.) this detection pin becomes high(4.0v or more) because of detecting st, when st signal is input. 25k ? 1k ? 200 ? 57 sif input input terminal for sif. the input impedance is about 1k ? . be care for about pattern layout of the input circuit, because of causing buzz-beat and buzz by leaking noise signal into the input terminal.(the noise signal depending on sound is particularly video signal and chroma signal and so on. vif carrier becomes noise signal.) composite signal of mts can be input by adding 5v to this terminal directly.(for test) 500 ? 1k ? 1k ? 500 ? 58 fm filter filter terminal for making stable dc voltage of fm detection output in sif part. normally, use a condenser of 1f. increase the capacity value with concerning frequency characteristics of low level. this terminal becomes composite signal input terminal of mts by changing to 5v at pin57. 1k ? 1k ? 59 reg filt dc; 4.5v filter terminal of reference voltage source 60k ? 11k ? 49k ? 1k ? to sif block to mts block 60 filter auto adj dc; 3.8v loop filter terminal for automatic adjusting. 1k ? 200 ? 40 a 40k ? 50 a 200 ? 3.8v continued on next page.
LA72680M ps no.7955-14/21 continued from preceding page. dc voltage pin no. pin function name ac level function equivalent circuit 61 am detector reference terminal of am detection. 30k ? 1k ? 1k ? 30k ? 30k ? v cc 64 65 75 dc filter dc ; 3.8v absorbing the dc offset of signal line by external capacity. 200 ? 15k ? 450k ? 450k ? 66 just clock out rectangle wave output for just clock. 5k ? 100k ? 5v 67 just clock amp out dc ; 3.8v 20db amplifire output for just clock. 45k ? 5k ? 500 ? 72 comparator input terminal dc ; 3.8v comparator input for just clock. 1k ? 50k ? 78 80 line out(r) terminal line out(l) terminal dc; 4.15v 100k ? 100k ?
LA72680M ps no.7955-15/21 69pin 71pin 73pin ext1 ext2 ext3 r-ch input selector through monitor in(r) 74pin + 11pin 9pin 7pin ext3 ext2 ext1 l-ch input selector from mts through monitor in(l) 12pin + line out(r) 78pin line out(l) 80pin 2pin ref out matrix/out selector s10(g3,d3) matrix/out selector s10(g3,d3) from mts through monitor signal path description 1. the through monitor signal path is as follows. when serial data g3d3 is set to "1", signal is output to line out and rec out. 2. reference input signal level. ext1,2,3 pin : -28.2dbv through monitor pin : -21.2dbv through monitor switch mode table through monitor g3d3 auto hifi det g2d6 hifi/mix/nor g2d4d3 line out lch line out rch rfc out ee 0 1 - - 0 0 0 0 insel l monitor l insel r monitor r insel mix monitor mix pb (hifi tape) 0 0 1 1 0 1 0 1 0 0 0 0 0 0 0 0 pb l pb l monitor l monitor l pb r pb r monitor r monitor r pb mix pb mix monitor mix monitor mix pb (nor. tape) 0 0 1 1 0 1 0 1 0 0 0 0 0 0 0 0 normal noise normal monitor l normal noise normal monitor r normal noise normal monitor mix * when output monitor signal to rfc out at normal tape replayed (g3d3:1), set g2d6 (hifi auto distinction) to 1 and select g2d4 d3:0 (hifi).
LA72680M ps no.7955-16/21 through monitor signal path supplementary explanation when output monitor signal to rfc out at the time of re play (especially normal tape ), care must be taken as described below. this ic has a function to auto distinguish hifi and normal by the presence or absence of rch envelope, which can be turned on/off by using g2d6. when output monitor signal to ref out at the time of repl ay, turn off this function and make the following settings. 1) g2d6:1 (auto detection off) 2) g3d3:1 (select through monitor) 3) g2d4d3:00 (select hifi) refer to the through monitor switch table above for each switch mode. 69pin 71pin 73pin ext1 ext2 ext3 r-ch input selector from mts 47pin ee pb g1d8d7 through monitor in(r) 74pin + vref 100k ? vref 150k ? 11pin 9pin 7pin ext3 ext2 ext1 l-ch input selector from mts 14pin ee through monitor in(l) 12pin + vref 100k ? 4pin normal through monitor g3d3 nor hifi mix g2d4d3 mute g1d6 line out(r) 78pin pb g1d8d7 through monitor g3d3 mix hifi nor g2d4d3 mute g1d6 line out(l) 80pin 2pin ref out 13pin pnr(l) demod(l) bpf(l) + 48pin pnr(l) demod(l) bpf(l) fm_level slicer + noise_det tracking_dc 34pin 23pin 30pin pb_fm_in tracking dc_curve g2d6 auto-det. on/off 0:on 1:off
LA72680M ps no.7955-17/21 input selecting switch mode table (switch output signal) sub address 0 1 0 2 data byte d8 d7 d3 d2 d1 d8 d7 hifi lch input hifi rch output normal out reference 1 0 0 0 0 1 0 0 tu l tu r tu l+tu r 2 0 0 0 1 0 0 0 ext1 l ext1 r ext1 l+ext1 r 3 0 0 1 0 0 0 0 ext2 l ext2 r ext2 l+ext2 r 4 0 0 1 1 0 0 0 ext3 l ext3 r ext3 l+ext3 r 5 0 0 0 0 1 0 1 tu l tu r tu l 6 0 0 0 1 0 0 1 ext1 l ext1 r ext1 l 7 0 0 1 0 0 0 1 ext2 l ext2 r ext2 l 8 0 0 1 1 0 0 1 ext3 l ext3 r ext3 l 9 0 0 0 0 1 1 0 tu l tu r tur 10 0 0 0 1 0 1 0 ext1 l ext1 r 11 0 0 1 0 0 1 0 ext2 l ext2 r 12 0 0 1 1 0 1 0 ext3 l ext3 r 13 0 1 0 0 0 0 0 pb l pb r 14 0 1 0 1 0 0 0 pb l pb r ext1 l+ext1 r 15 0 1 1 0 0 0 0 pb l pb r ext2 l+ext2 r 16 0 1 1 1 0 0 0 pb l pb r ext3 l+ext3 r 17 0 1 0 0 0 0 1 pb l pb r 18 0 1 0 1 0 0 1 pb l pb r ext1 l 19 0 1 1 0 0 0 1 pb l pb r ext2 l 20 0 1 1 1 0 0 1 pb l pb r ext3 l 21 0 1 0 0 0 1 0 pb l pb r 22 0 1 0 1 0 1 0 pb l pb r 23 0 1 1 0 0 1 0 pb l pb r 24 0 1 1 1 1 1 0 pb l pb r 25 0 1 0 0 0 1 0 pb l pb r 26 1 1 * * * * * pb l pb r pb l+pb r audio-dubbing correspond note : * is option.(1 or 0)
LA72680M ps no.7955-18/21 input selecting switch mode table ( switch output signal ) sub address 0 1 0 2 data byte d8 d7 d3 d2 d8 d7 hifi(80pin lch output hifi(78pin) rch output normal out (6pin) reference 1 0 0 0 0 0 0 tu l tu r tu l+tu r 2 0 0 0 1 0 0 ext1 l ext1 r ext1 l+ext1 r 3 0 0 1 0 0 0 ext2 l ext2 r ext2 l+ext2 r 4 0 0 1 1 0 0 ext3 l ext3 r ext3 l+ext3 r 5 0 0 0 0 0 1 tu l tu r tu l 6 0 0 0 1 0 1 ext1 l ext1 r ext1 l 7 0 0 1 0 0 1 ext2 l ext2 r ext2 l 8 0 0 1 1 0 1 ext3 l ext3 r ext3 l 9 0 0 0 0 1 0 tu l tu r tu r 10 0 0 0 1 1 0 ext1 l ext1 r tu r 11 0 0 1 0 1 0 ext2 l ext2 r tu r 12 0 0 1 1 1 0 ext3 l ext3 r tu r 13 0 1 0 0 0 0 pb l pb r tu l+tu r 14 0 1 0 1 0 0 pb l pb r ext1 l+ext1 r 15 0 1 1 0 0 0 pb l pb r ext2 l+ext2 r 16 0 1 1 1 0 1 pb l pb r ext3 l 17 0 1 0 0 0 1 pb l pb r tu l 18 0 1 0 1 0 1 pb l pb r ext1 l 19 0 1 1 0 0 1 pb l pb r ext2 l 20 0 1 1 1 0 1 pb l pb r ext3 l 21 0 1 0 0 1 0 pb l pb r tu r 22 0 1 0 1 1 0 pb l pb r - 23 0 1 1 0 1 0 pb l pb r - 24 0 1 1 1 1 0 pb l pb r - 25 1 0 * * * * pb l pb r pb l+pb r audio-dubbing correspond note : * is option.(1 or 0)
LA72680M ps no.7955-19/21 serial data specification ( i 2 c bus communication ) data byte (an underline is the first condition.) msb lsb address d8 d7 d6 d5 d4 d3 d2 d1 ( 01 ) 00000001 ee/pb/audio-dubbing 00:ee 01:pb 10:audio-dubbing line out mute 0:off 1:on power save 0:on 1:off ee/rec 0:ee 1:rec input source select 001:tuner 010:ext1 100:ext2 110:ext3 ( 02 ) 00000010 normal input source select 00:l/r mix 01:lch 10:tu(r) auto_hifi det 0:on 1:off just in clock 0:off 1:on output mode select 00:hifi 01:mix (hifi+nor) 10:normal output source select 00:stereo 01:l-ch 10:r-ch ( 03 ) 00000011 vco carrier (mhz) 0:1.3/1.7 1:1.4/1.8 rec fm mix 00:9db 01:8db 10:10db 11:11db do on/off 0:on 1:off line out signal level 0:-9dbv 1:-8dbv through monitor 0:off 1:on hifi det level select 0:typ 1:+10% hifi det level select 0:typ 1:-10% ( 04 ) 00000100 fixed 0 normal input gain 0:0db 1:3db rec current level select 00:center 01:-1.5db 10:-5.5db normal out mute 0:off 1:on fixed 0 rf mod alc level 0:-5dbv 1:-1dbv input alc 0:on 1:off ( 05 ) 00000101 multiplex mode select 00:bilingual 01:main 10:sub forced mono 0:off 1:on fixed 0 ep/sp 0:sp 1:ep fixed 0 fixed 0 fixed 0 ( 06 ) 00000110 fixed 0 / use in investigating the shipment. ( 07 ) 00000111 fixed 0 / use in investigating the shipment. note: address 00000110 and 00000111 are used in investigating the shipment, please send ?0? data to all bits at refreshing the data.
LA72680M ps no.7955-20/21 i 2 c bus serial interface specification (1) data transfer manual this ic adopts control method(i 2 c-bus) with serial data, and controlled by two terminals which called scl(serial clock) and sda (serial data).at first, se t up the condition of starting data transfer *1 , and after that, input 8 bit data to sda terminal with synchronized scl terminal clock. the or der of transferring is first, msb (the most scale of bit),and save the order. the 9th bit takes ack (acknowledge) period, during scl terminal takes ? h ? , this ic pull down the sda terminal. after transferred the necessary data, two terminals lead to set up and of data transfer stop condition *2 , thus the transfer comes to close. as a part of transfer data write down to internal memory (v latch system), internal control doesn?t change just after the transfer. *1 defined by scl rise down sda during ?h? period. *2 defined by scl rise up sda during ?h? period. (2) transfer data format after transfer start co ndition, transfers slave address(1110100*) to sda terminal, next, sub address(0000****), control data *3 , then, stop condition(see figure 1). and this lsi have a auto address increment function, then, next of slave address transfer, transfer sub address(n) *4 , group (n ) data, after that, group (n+1) and so on. data works with all of the bit, transfer the stop conditio n before stop 8bit transfer, and to stop transfer, it will be canceled only the data of group. *3 there are 1 to 5 groups. *4 pointed date by sub address becomes group no. of next control data. fig.1 data structure ?write? mode start condition slave address r/w l *5 ack sub address(n) ack control data(n) ack control data(n+1) ack ?? stop condition *5 it is called r/w bit. data-1 means data for group-1, data-2 means data for group-2. (3) initialize this ic is initialized for circuit protection. the initialization period is decided pin 16 capacity value by internal impedance 15k ? , and shown with t = -cr ln(0.2). data cannot be accepted for this period. t = 530ms at c = 22 f, in this case, please transmit data in cons ideration of the uneven after about 700ms.
LA72680M ps no.7955-21/21 sanyo semiconductor co.,ltd. assumes no responsib ility for equipment failures that result from using products at values that exceed, even momentarily, rate d values (such as maximum ra tings, operating condition ranges, or other parameters) listed in products specif ications of any and all sanyo semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-qual ity high-reliability products, however, any and all semiconductor products fail or malfunction with some probabi lity. it is possible that these probabilistic failures or malfunction could give rise to acci dents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause dam age to other property. when designing equipment, adopt safety measures so that these kinds of accidents or e vents cannot occur. such measures include but are not limited to protective circuits and error prevention c ircuits for safe design, redundant design, and structural design. upon using the technical information or products descri bed herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of sanyo semiconductor co.,ltd. or any third party. sanyo semiconductor co.,ltd. shall not be liable f or any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. information (including circuit diagr ams and circuit parameters) herein is for example only; it is not guaranteed for volume production. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equi pment, refer to the "delivery specification" for the sanyo semiconductor co.,ltd. product that you intend to use. in the event that any or all sanyo semiconductor c o.,ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities conc erned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any in formation storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd. thd:sta tsu:sta tlow tr tf thigh thd:data tsu:data tbuf tsu:sto scl sda (4) serial input signal format parameter symbol min max unit low level input voltage vil -0.5 1.5 v high level input voltage vih 3.0 5.5 v low level output current iol - 3.0 ma scl clock frequency fscl 0 100 khz set-up time for a repeated start condition tsu:sta 4.7 s hold time start condition. after this period, the first clock pulse is generated thd:sta 4.0 s low period of the scl clock tlow 4.7 s rise time of both sda and sdl signals tr 0 1.0 s high period of the scl clock thigh 4.0 - s fall time of both sda and sdl signals tf 0 1.0 s data hold time: thd:dat 0 - s data set-up time tsu:dat 250 - ns set-up time for stop condition tsu:sto 4.0 - s bus free time between a stop and start condition tbuf 4.7 - s (5) definition of timing this catalog provides information as of april, 2007. specifications and information herein are subject to change without notice.

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