Serial Port (Cn19) - Aaeon PCM-5895 Manual

C o m p a c t B o a r d
Port 4
Port 5
Port 6
Port 7
Port 8

2.28 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
1 DCD1
3 RXD1
5 TXD1
7 DTR1
9 GND
11 DCD2
13 RXD2
15 TXD2
17 DTR2
19 GND
21 NC
23 RXD3
25 TXD3
27 NC
Chapter 2 Quick Installation Guide
CN18. pin 4
CN18. pin 5
CN18. pin 6
CN18. pin 7
CN18. pin 8
2- 22
P C M - 5 8 9 5 R e v . B
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Pin Signal
2 DSR1
4 RTS1
6 CTS1
8 RI1/+5V/+12V
10 NC
12 DSR2
14 RTS2
16 CTS2
18 RI2/+5V/+12V
20 NC
22 NC
24 NC
26 NC
28 +5V/+12V
U40. pin 23 (GPIO24)
U40. pin 24 (GPIO23)
U40. pin 25 (GPIO22)
U40. pin 26 (GPIO21)
U40. pin 27 (GPIO20)