Owner manual

Compact Board PCM-5895 Rev.B
Chapter 2 Quick Installation Guide 2- 22
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)
2.28 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 Pin Signal
1
DCD1
2
DSR1
3
RXD1
4
RTS1
5
TXD1
6
CTS1
7
DTR1
8
RI1/+5V/+12V
9
GND
10
NC
11
DCD2
12
DSR2
13
RXD2
14
RTS2
15
TXD2
16
CTS2
17
DTR2
18
RI2/+5V/+12V
19
GND
20
NC
21
NC
22
NC
23
RXD3
24
NC
25
TXD3
26
NC
27
NC
28
+5V/+12V