Aiwa Z-L900 Service Manual page 26

IC DESCRIPTION
IC, LC876580W-5P55
Pin No. Pin Name
1 M-CLK
2 M-DATA
3 M-STB
4 PLL-CE
5 SR-LCK
6 RYM-CS
7 POWER
8 MUTE
9 C-SHIFT
10 HP-MUTE
11 RESET
12 RTVR
13 JOG
14 GND
15 CF1
16 CF2
17 VDD
18 HOLD
19 KEY1
20 KEY2
21 KEY3
22 CD-SW
23 DISH
24 SPEANA
25 MIC
26 RDS-SG
27 TM-BASE
CD-WRQ/
28
RDS-CLK
29 REM
30 ~ 42 G13 ~ G1
43 ~ 45 P38 ~ P36
46 VDD
47 P35/SPEANA–A
48 P34/SPEANA–B
49 P33/SPEANA–C
50 P32/CSNDEMO
51 –VP
52 P31/TU3
53 P30/TU2
54 P29/TU1
55 P28/DSP
I/O
O Common serial clock.
O Common serial data.
O Common serial strobe.
O Tuner PLL IC chip enable.
O Shift register IC LATCH clock.
O RHYTHM IC chip select.
O Audio power ON/OFF.
O System MUTE ON/OFF.
O CLOCK SHIFT output. "L" : SHIFT
I Head phone jack detection. "L" : MUTE
I System RESET input.
I Volume rotary encoder.
I Dial JOG rotary encoder.
– Connected to GND.
I Oscillator circuit input.
O Oscillator circuit output.
– Power supply.
I System HOLD input.
I Tact key matrix 1 input.
I Tact key matrix 2 input.
I Tact key matrix 3 input.
I CD MECHA SW matrix input.
I CD turntable photo sensor.
I Spectrum analyser level detection.
I MIC input level detection.
RDS Signal level input. (Not used)
I
I Time base clock input.
I CD Read Write Request / Tuner RDS clock input (Not used).
I Remote control signal input.
O FL grid G13 ~ G1 output.
O FL segment P38 ~ P36 output.
– Power supply.
O FL segment P35 output / Spectrum analyser BPF switching control A output.
O FL segment P34 output / Spectrum analyser BPF switching control B output.
O FL segment P33 output / Spectrum analyser BPF switching control C output.
O/I FL segment P32 output / Initial DEMO MODE detect. "H" : CASINO DEMO.
– Power supply for FL.
O/I FL segment P31 output / TUNER series, TU3 select.
O/I FL segment P30 output / TUNER series, TU2 select.
O/I FL segment P29 output / TUNER series, TU1 select.
O/I FL segment P28 output / DSP function detection. "L" : ON (Not used).
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Description