Cpu Input/Output Port Functions - Sanyo PLC-XF20 Service Manual

CPU In/Out put port functions
Function
Pin
No. Name
1 USB Reset
2
Fan CS1
3
WRHL
4 RS232C-SW
5 Power LED
6 VSS
7 ADDRESS 0
8 ADDRESS 1
9
ADDRESS 2
10 ADDRESS 3
11 ADDRESS 4
12 VCC
13 ADDRESS 5
14 VSS
15
ADDRESS 6
16 ADDRESS 7
17 ADDRESS 8
18 ADDRESS 9
19 ADDRESS 10
20 ADDRESS 11
21
ADDRESS 12
22 ADDRESS 13
23 ADDRESS 14
24 ADDRESS 15
25 ADDRESS 16
26 VCC
27
ADDRESS 17
28 VSS
29 SCL 1
30 SDA 1
31 RAS
32 CASL
33
SYS SW
34 AFT-V
35 VSS
36 BF-V
37 ADDRESS 18
38 ADDRESS 19
39
ADDRESS 20
40 VCC
41 ADDRESS 21
42 VSS
43 READ
44 WDT
45
DATA 31
46 DATA 30
47 WRH
48 WRL
49 CS1
50 CS0
Function
USB Reset
Fan Drive-1 Chip Select
Write signal
RS232C Output Select
L: Off H: On
VSS GND
ADDRESS BUS 0
ADDRESS BUS 1
ADDRESS BUS 2
ADDRESS BUS 3
ADDRESS BUS 4
VCC 5V
ADDRESS BUS 5
VSS GND
ADDRESS BUS 6
ADDRESS BUS 7
ADDRESS BUS 8
ADDRESS BUS 9
ADDRESS BUS 10
ADDRESS BUS 11
ADDRESS BUS 12
ADDRESS BUS 13
ADDRESS BUS 14
ADDRESS BUS 15
ADDRESS BUS 16
VCC 5V
ADDRESS BUS 17
GND
IIC BUS 1 CLOCK
IIC BUS 1 DATA
DRAM-RAS SIGNAL OUTPUT
DRAM-CAS SIGNAL OUTPUT
IC ON/OFF SWITCH
V-SYNC INPUT (LCD PANEL DRIVE)
VSS GND
V-SYNC INPUT
ADDRESS BUS 18
ADDRESS BUS 19
ADDRESS BUS 20
VCC 5V
ADDRESS 21
VSS GND
READ SIGNAL (OUTPUT)
----
DATA BUS 31
DATA BUS 30
WRITE SIGNAL H-8BIT
WRITE SIGNAL L-8BIT
BGA CHIP SELECT
FLASH MEMORY CHIP SELECT
Polarity
ACTIVE L
ACTIVE L
ACTIVE L
ACTIVE L
ACTIVE L
L=ON, H=OFF
ACTIVE L
ACTIVE L
ACTIVE L
ACTIVE L
ACTIVE L
ACTIVE L
ACTIVE L
-42-
In/Out
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
IN/OUT
IN/OUT
OUT
OUT
OUT
IN
IN
OUT
OUT
OUT
OUT
OUT
OUT
IN/OUT
IN/OUT
OUT
OUT
OUT
OUT