Aiwa Z-L720U Service Manual page 23

IC DESCRIPTION
IC, LC876572V-5T94
Pin No.
Pin Name
1 M-CLK
2 M-DATA
3 TU-ON
4 O-PLL-CE
5 CD5
6 BIAS
7 O-POWER
8 O-MUTE
9 O-C-SHIFT
10 CD1
11 I-RESET
12 I-RTVR
13 I-JOG
14 VSS1
15 CF1
16 CF2
17 VDD1
18 HOLD
19 ~ 21 I-KEY1 ~ 3
22 I-CDSW
23 I-DISH
24 I-SPEANA
25 O-RMT
26 I-RDS-SG
27 I-TM-BASE
28 I-WRQ/I-RDS-CK
29 I-REM
30 ~ 42 G13 ~ G1
43 ~ 45 P38 ~ P36
46 VDD3
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
56 P27
57 I-STEREO/P26
58 P25
I/O
O Common serial clock.
O Common serial data.
O Tuner supply control. H: ON.
O Tuner PLL IC chip enable.
O CD dish LED5. L: ON.
O Recording bias control. L: ON.
O Audio power ON/OFF.
O System mute ON/OFF.
O Clock shift output. L: Shift.
O CD dish LED1. L: ON.
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 ~ 3 input.
I CD MECHA SW matrix input.
I CD turntable photo sensor.
I Spectrum analyzer level detection.
O Record ON/OFF control. H: ON.
I RDS Signal level input. (Not used)
I Time base clock input.
I CD WRQ input/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 analyzer band control A.
O FL segment P34 output/Spectrum analyzer band control B.
O FL segment P33 output/Spectrum analyzer band control C.
I/O FL segment P32 output/Initial DEMO mode detect. H: OFF<LH ONLY>.
– Power supply for FL input.
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 FL segment P28 output.
O FL segment P27 output.
I/O Tuner stereo signal input/FL segment P26 output.
O FL segment P25 output.
Description
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