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Compact Board PCM-9452
Chapter 2 Quick Installation Guide 2-20
2.35 COM Port 3 Connector (CN20)
Pin Signal Pin Signal
1
DCDC
2
RXC
3
TXC
4
DTRC
5
Ground
6
DSRC
7
RTSC
8
CTSC
9
RIC
10
N/C
2.36 Digital I/O Connector (CN22)
Pin Signal Pin Signal
1
Port 1
2
Port 2
3
Port 3
4
Port 4
5
Port 5
6
Port 6
7
Port 7
8
Port 8
9
+5 Volt.
10
Ground
Mapping Table
(Digital I/O Address is 801H)
BIOS
Setting
Connector
Definition
Address
IT8712 GPIO
Settin
g
Port 8 CN22 Pin 8 Bit 7 U22 Pin 20 (GPIO 27)
Port 7 CN22 Pin 7 Bit 6 U22 Pin 21 (GPIO 26)
Port 6 CN22 Pin 6 Bit 5 U22 Pin 22 (GPIO 25)
Port 5 CN22 Pin 5 Bit 4 U22 Pin 23 (GPIO 24)
Port 4 CN22 Pin 4 Bit 3 U22 Pin 24 (GPIO 23)
Port 3 CN22 Pin 3 Bit 2 U22 Pin 25 (GPIO 22)