1-8 (No.YA422)
2.4.2 MAIN CPU PIN FUNCTION [IC7301
: DIGITAL PWB]
Pin Pin name I/O Function Pin Pin name I/O Function
1 TCK O Test purpose 65 D2 I/O Program ROM data for main CPU
2 TMS I Test purpose 66 D12 I/O Program ROM data for main CPU
3 TDI I Test purpose 67 D10 I/O Program ROM data for main CPU
4 TDO O Test purpose 68 VSS33 - GND
5 P2.8 O TV, Subtitle/OTHER 69 VDD33 I 3.3V
6 P2.9 O Blue for OSD 70 D4 I/O Program ROM data for main CPU
7 P2.10 O Blue for OSD 71 D3 I/O Program ROM data for main CPU
8 P2.11 O Blue for OSD 72 D11 I/O Program ROM data for main CPU
9 P2.12 O Blue for OSD 73 RSTIN I Reset
10 P2.13 O Blue for OSD 74 POWER O Sleep state release for chassis CPU [Relese : L]
11 P2.14 I Not used 75 P3.1 O DM_RESET(IDTV)
12 P2.15 O Request for chassis CPU communication 76 REMOCON I Remote control
13 VSS33 - GND 77 P3.3 I Clock for OSD
14 VDD33 I 3.3V 78 P3.4 O Red for OSD
15 P4.5 O Not used 79 P3.5 O Red for OSD
16 A20 O Program ROM address for main CPU 80 P3.6 O Red for OSD
17 A19 O Program ROM address for main CPU 81 P3.7 O Red for OSD
18 A18 O Program ROM address for main CPU 82 MTST I/O Data transmission for chassis CPU communication
19 A17 O Program ROM address for main CPU 83 MTSR I/O Data receive for chassis CPU communication
20 VSS25 - GND 84 VSS33 - GND
21 VDD25 I 2.5V 85 VDD33 I 3.3V
22 A16 O Program ROM address for main CPU 86 VSS25 - GND
23 A8 O Program ROM address for main CPU 87 VDD25 I 2.5V
24 A7 O Program ROM address for main CPU 88 TXD0 I/O Communication for adjustment
25 A9 O Program ROM address for main CPU 89 RXD0 I/O Communication for adjustment
26 A6 O Program ROM address for main CPU 90 P3.12 O Red for OSD
27 A5 O Program ROM address for main CPU 91 CLK O Clock for chassis CPU communication
28 A10 O Program ROM address for main CPU 92 P3.15 O Green for OSD
29 A11 O Program ROM address for main CPU 93 P5.14 O Green for OSD
30 A12 O Program ROM address for main CPU 94 P5.15 O Green for OSD
31 VSS33 - GND 95 TRIG_IN O Green for OSD
32 VDD33 I 3.3V 96 TRIG_OUT O Green for OSD
33 A4 O Program ROM address for main CPU 97 P6.2 O Green for OSD
34 A3 O Program ROM address for main CPU 98 P6.3 I/O I
2
C bus clock (for main memory)
35 A2 O Program ROM address for main CPU 99 P6.4 I/O I
2
C bus Data (for main memory)
36 A1 O Program ROM address for main CPU 100 P6.5 O Teletext signal select [Analog RGB : H / Digital RGB : L]
37 A0 O Program ROM address for main CPU 101 IRQ O IRQ(IDTV)
38 A13 O Program ROM address for main CPU 102 VSYNC I/O Vertical sync
39 ARAS/A14 O Program ROM address for main CPU 103 HSYNC I/O Horizontal sync
40 CAS/A15 O Program ROM address for main CPU 104
COR/RSTOUT
O Not used
41 VSS33 - GND 105 BLANK O Ys for OSD / Teletext
42 VDD33 I 3.3V 106 VDD33 I 3.3V
43 MEMCLK O Clock for memory 107 VSS33 - GND
44 CSSDRAM O Chip select for memory 108 XTAL1 I 6MHz for system clock
45 CLKEN O Clock enable for memory 109 XTAL2 O 6MHz for system clock
46 CSROM O Chip select for memory 110 VSSA - GND
47 RD O Read for memory 111 VDDA I 2.5V
48 UDQM O Control buffer of memory 112 R O R for OSD / Teletext
49 LDQM O Control buffer of memory 113 G O G for OSD / Teletext
50 WR O Write for memory 114 B O B for OSD / Teletext
51 D15 I/O Program ROM data for main CPU 115 VSSA - GND
52 VSS33 - GND 116 VDDA I 2.5V
53 VDD33 I 3.3V 117 CVBS2 I Video for Teletext
54 D7 I/O Program ROM data for main CPU 118 VSSA - GND
55 D0 I/O Program ROM data for main CPU 119 VDDA I 2.5V
56 D14 I/O Program ROM data for main CPU 120 CVBS1B I Video for Teletext
57 D8 I/O Program ROM data for main CPU 121 CVBS1A I Video for Teletext
58 D6 I/O Program ROM data for main CPU 122 VSSA - GND
59 D1 I/O Program ROM data for main CPU 123 VDDA I 2.5V
60 VSS33 - GND 124 KEY1 I Key scan data 1 [ON : H]
61 VDD33 I 3.3V 125 KEY2 I Key scan data 2 [ON : H]
62 D13 I/O Program ROM data for main CPU 126 MECA_SW I Main power ON / OFF control [ON : L]
63 D9 I/O Program ROM data for main CPU 127
(KEYP2)P5.3
I Not used
64 D5 I/O Program ROM data for main CPU 128 TMODE I Test purpose
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