User Manual

Compact Board PCM-5895

Chapter 2 Quick Installation Guide 2- 24

DIO Address is 801H

BIOS Setting Connector Definition Address IT8712 GPIO Setting

Port 1 CN18. pin 1 Bit 7 U40. pin 20 (GPIO27)

Port 2 CN18. pin 2 Bit 6 U40. pin 21 (GPIO26)

Port 3 CN18. pin 3 Bit 5 U40. pin 22 (GPIO25)

Port 4 CN18. pin 4 Bit 4 U40. pin 23 (GPIO24)

Port 5 CN18. pin 5 Bit 3 U40. pin 24 (GPIO23)

Port 6 CN18. pin 6 Bit 2 U40. pin 25 (GPIO22)

Port 7 CN18. pin 7 Bit 1 U40. pin 26 (GPIO21)

Port 8 CN18. pin 8 Bit 0 U40. pin 27 (GPIO20)

2.29 Serial Port (CN19)

Note: COM 1 & COM 2 support full modem control signals and COM 3 &

COM 4 support TX & RX only.

COM/ RS-232 mode

Pin Signal Pin Signal

DCD1

DSR1

RXD1

RTS1

TXD1

CTS1

DTR1

RI1/+5V/+12V

GND

N.C.

DCD2

DSR2

RXD2

RTS2