JVC LT-26WX84 Service Manual page 10

2.2.3 SUB MICRO COMPUTER (CPU) FUNCTION
Pin No.
1 (SYSTEM0)
2 (SYSTEM3)
3 AVCC
4 X2
5 X1
6 VCL
7 RES
8 TEST
9 VSS
10 OSC2
11 OSC1
12 VCC
13 NC
14 NC
15 BL_D2
16 BL_D1
17 I2C_STOP
18 BL_ON
19 NC
20 NC
21 NC
22 NC
23 SDA1
24 A.DIM
25 SCL1
26 SDA0
27 SCL0
28 NC
29 NC
30 NC
31 NC
32 NC
33 NC
34 NC
35 NMI
36 NC
37 (HD)
38 NC
39 (REMO)
40 NC
41 P85
42 P86
43 P87
44 SCK3
45 RXD
1-10 (No.YA089)
Pin name I/O
O
O
O
O
O
O
O
O
O
O
O
I/O
O
O
I/O
O
O
O
O
O
O
O
O
O
O
O
-/I
O
I GND
I GND
- 5V
- Not used
- Not used
- Internal down voltage
I Reset [Reset : L]
I Operation test for SUB CPU
- GND
10MHz oscillation for system clock
I 10MHz oscillation for system clock
- 5V
Not used
Not used
Back light 20ms delay for LCD panel [On:L]
Back light 10ms delay for LCD panel [On:L]
Not used
Back light reset for LCD panel [Reset:L]
Not used
Not used
Not used
Not used
2
I C bus data (For Sub memory)
Not used
2
I C bus clock (For Sub memory)
2
I C bus data (For general)
2
I C bus clock (For general)
Not used
Not used
Not used
Not used
Not used
Not used
Not used
I Port for writing on board [Writning:L]
Not used
I Not used
Not used
I Not used
Not used
Not used
- Not used
- Not used
Port for writing on board
I Port for writing on board
Function