1-8 (No.YA180)
2.3.2 MAIN CPU PIN FUNCTION [IC7601 : DIGITAL SIGNAL PWB ASS'Y]
Pin Pin name I/O Function Pin Pin name I/O Function
1 VHOLD1 I Data slice for main screen closed caption 51 NC O Not used
2 HFLT1 I/O LPF for main screen closed caption video input 52 NC O Not used
3 NC O Not used 53 NC O Not used
4 NC O Not used 54 NC O Not used
5 DIGR0 O R [0] for OSD 55 NC O Not used
6 TB1in I AC power for timer clock 56 NC O Not used
7 REMO I Remote control 57 NC O Not used
8 BYTE I Data bus width select [L = 16bit (fixed)] 58 NC O Not used
9 CNVss I CPU programming mode select [Normal = L] 59 NC O Not used
10 DIGG0 O G [0] for OSD 60 NC O Not used
11 DIGB0 O B [0] for OSD 61 NC O Not used
12 RESET I Reset for main CPU [Reset = L] 62 HSYNC I H. sync for OSD
13 Xout O System clock osillation (crystal) : 16MHz 63 NC O Not used
14 Vss - GND 64 VSYNC I V. sync for OSD
15 Xin I System clock osillation (crystal) : 16MHz 65 NC O Not used
16 VccI I 3.3V stand-by power supply 66 NC O Not used
17 OSC1 I Clock for OSD 67 NC O Not used
18 OSC2 O Not used : Clock for OSD 68 NC O Not used
19 INT1 I AV COMPULINK control 69 NC O Not used
20 INT0 I
Request for sub(chassis) CPU communication (serial data)
70 NC O Not used
21 OUT1 O Ys (blanking) for OSD 71 NC O Not used
22 OUT2 O YM (transparence) for OSD 72 NC O Not used
23 NC O Not used 73 NC O Not used
24 NC O Not used 74 NC O Not used
25 NC O Not used 75 NC O Not used
26 NC O Not used 76 NC O Not used
27 CTA2/RTS2 O Not used : Digital tuner control 77 NC O Not used
28 CLK2 O Not used : Digital tuner control 78 NC O Not used
29 RxD2 I Not used : Digital tuner control 79 NC O Not used
30 TxD2 O Not used : Digital tuner control 80 NC O Not used
31 SDA2 I/O Not used 81 NC O Not used
32 DIGR1 O R [1] for OSD 82 NC O Not used
33 DIGG1 O G [1] for OSD 83 NC O Not used
34 DIGB1 O B [1] for OSD 84 WAKE O Reset for sub(chassis) CPU
35 TxD0 I Data receive (serial) for external programming 85 CARD_DET I Not used : Card detection for ATSC digital tuner
36 RxD0 O Data transmission (serial) for external programming 86
POWER_SW
I Not used : Power switch (mechanical) detection
37 CLK0 I Clock for external programming 87 NC I/O Data for Inter IC (serial) bus control : memory
38 RTS0 O Busy for external programming [Operation = H] 88 NC O Clock for Inter IC (serial) bus control : memory
39 P5.7 I Not used 89 DIGR2 O R [2] for OSD
40 P5.6 O Not used 90 DIGG2 O G [2] for OSD
41 HOLD I CPU programming mode select [Normal = H] 91 DIGB2 O B [2] for OSD
42 P5.4 O Not used 92 NC O Not used
43 P5.3 O Not used 93 KEY2 I
Key scan data for front control button (MENU/CH+/CH-) KEY2
44 P5.2 O Not used 94 KEY1 I
Key scan data for front control button (VOL+/VOL-) KEY1
45 P5.1 O Not used 95 VHOLD2 I Data slice for sub screen closed caption
46 WR O CPU programming mode select [Normal = L] 96 HLF2 I/O LPF for sub screen closed caption video input
47 P4.7 O
Data transmission for sub(chassis) CPU communication (serial)
97 CVIN2 I Video(Y) for sub screen closed caption
48 P4.6 I
Data receive for sub(chassis) CPU communication (serial)
98 TVSETB I Test terminal [L Fixed]
49 P4.5 I Clock for sub(chassis) CPU communication (serial) 99 VCCE I 5V stand-by power supply
50 P4.4 O Not used 100 CVIN1 I Video(Y) for main screen closed caption
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