AAEON PCM-5895 Rev.A - Manual (Page 36)

C o m p a c t B o a r d P C M - 5 8 9 5
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
1 DCD1 2 DSR1
3 RXD1 4 RTS1
5 TXD1 6 CTS1
7 DTR1 8 RI1/+5V/+12V
9 GND 10 N.C.
11 DCD2 12 DSR2
13 RXD2 14 RTS2