JVC PD-Z35DV4 Service Manual page 9

2.3.3 MAIN CPU [DIGITAL SIGNAL PWB : IC7501] PIN FUNCTION
Pin
Pin name I/O
No.
1 TCK I
2 TMS I
3 TDI I
4 TDO O Test purpose
5 NC O Not used
6 OSDB0 O Blue for OSD
7 OSDB1 O Blue for OSD
8 OSDB2 O Blue for OSD
9 OSDB3 O Blue for OSD
10 OSDB4 O Blue for OSD
11 TV-LINK I
12 RX_BUSY(Sirial) O Request for chassis CPU communication
13 VSS33 -
14 VDD33 I
15 TV_LINK_OUT O Not used
16 A20 O Program ROM address for main CPU
17 A19 O Program ROM address for main CPU
18 A18 O Program ROM address for main CPU
19 A17 O Program ROM address for main CPU
20 VSS25 -
21 VDD25 I
22 A16 O Program ROM address for main CPU
23 A8 O Program ROM address for main CPU
24 A7 O Program ROM address for main CPU
25 A9 O Program ROM address for main CPU
26 A6 O Program ROM address for main CPU
27 A5 O Program ROM address for main CPU
28 A10 O Program ROM address for main CPU
29 A11 O Program ROM address for main CPU
30 A12 O Program ROM address for main CPU
31 VSS33 -
32 VDD33 I
33 A4 O Program ROM address for main CPU
34 A3 O Program ROM address for main CPU
35 A2 O Program ROM address for main CPU
36 A1 O Program ROM address for main CPU
37 A0 O Program ROM address for main CPU
38 A13 O Program ROM address for main CPU
39 A14/RAS O Program ROM address for main CPU
40 A15/CAS O Program ROM address for main CPU
41 VSS33 -
42 VDD33 I
43 MEMCLK O Clock for memory
44 CSSDRAM O Chip select for memory
45 CLKEN O Clock enable for memory
46 CSROM O Chip select for memory
47 RD O Read for memory
48 UDQM O Control buffer of memory
49 LDQM O Control buffer of memory
50 WR O Write for memory
51 D15 I/O Program ROM data for main CPU
52 VSS33 -
53 VDD33 I
54 D7 I/O Program ROM data for main CPU
55 D0 I/O Program ROM data for main CPU
56 D14 I/O Program ROM data for main CPU
57 D8 I/O Program ROM data for main CPU
58 D6 I/O Program ROM data for main CPU
59 D1 I/O Program ROM data for main CPU
60 VSS33 -
61 VDD33 I
62 D13 I/O Program ROM data for main CPU
63 D9 I/O Program ROM data for main CPU
64 D5 I/O Program ROM data for main CPU
65 D2 I/O Program ROM data for main CPU
Function
Test purpose
Test purpose
Test purpose
Not used
GND
3.3V
GND
2.5V
GND
3.3V
GND
3.3V
GND
3.3V
GND
3.3V
Pin
Pin name I/O
No.
66 D12 I/O Program ROM data for main CPU
67 D10 I/O Program ROM data for main CPU
68 VSS33 - GND
69 VDD33 I 3.3V
70 D4 I/O Program ROM data for main CPU
71 D3 I/O Program ROM data for main CPU
72 D11 I/O Program ROM data for main CPU
73 RSTIN I Reset
74 POWER O Sleep state release for chassis CPU [Relese : L]
75 ID_TV_POWER(IDTV) O Not used
76 REMOCON I Remote control
77 PIX CLOCK I Clock for OSD
78 OSDR0 O Red for OSD
79 OSDR1 O Red for OSD
80 OSDR2 O Red for OSD
81 OSDR3 O Red for OSD
82 MRST(Sirial) O Data transmission for chassis CPU
communication
83 MTSR(Sirial) I Data receive for chassis CPU communication
84 VSS33 - GND
85 VDD33 I 3.3V
86 VSS25 - GND
87 VDD25 I 2.5V
88 MICON TX O Communication for adjustment
89 MICON RX O Communication for adjustment
90 OSDR4 O Red for OSD
91 CLK(Sirial) O Clock for chassis CPU communication
92 OSDG0 O Green for OSD
93 OSDG1 O Green for OSD
94 OSDG2 O Green for OSD
95 OSDG3 O Green for OSD
96 OSDG4 O Green for OSD
97 OSDG5 O Green for OSD
98 SCL3A O I
99 SDA3A I/O I
100 TEXT / OTHER O Teletext signal select
[Analog RGB : H / Digital RGB : L]
101 IRQ(IDTV) O Not used
102 V_PULSE I Vertical sync
103 H_PULSE I Horizontal sync
104 (COR/RSTOUT) O Not used
105 Ys O Ys for OSD / Teletext
106 VDD33 I 3.3V
107 VSS33 - GND
108 XTAL1 I 6MHz for system clock
109 XTAL2 O 6MHz for system clock
110 VSSA - GND
111 VDDA I 2.5V
112 R O R for OSD / Teletext
113 G O G for OSD / Teletext
114 B O B for OSD / Teletext
115 VSSA - GND
116 VDDA I 2.5V
117 CVBS I Video for Teletext
118 VSSA - GND
119 VDDA I 2.5V
120 GND I GND
121 CVBS I Video for Teletext
122 VSSA - GND
123 VDDA I 2.5V
124 F_KEY_1 I Key scan data 1 [ON : H]
125 F_KEY_2 I Key scan data 2 [ON : H]
126 POWER_KEY I Main power ON / OFF control [ON : L]
127 NC I Not used
128 (TMODE) I Test purpose
Function
C bus clock (for main memory)
2
2 C bus Data (for main memory)
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