PPC-104T User’s Manual
IUMPPC104T-01 Ver.1.0B Jun, 2016
38
5.2 Extension I/O Pin Assignment
(Optional)
COM3, 4 and 9 (RS232)
(Change setting by BIOS)
Pin #
Signal Name
Pin #
Signal Name
1
DCD1
2
RXD1
3
TXD1
4
DTR1
5
GND
6
DSR1
7
RTS1
8
CTS1
9
RI1
COM5 & 6 (RS232) or 18-bit GPIO
Pin #
Signal Name
Pin #
Signal Name
1
VCC (+5V_Output)
2
GND
3
DCD5 / GPIO_00
4
TXD5 / GPIO_01
5
RTS5 / GPIO_02
6
RI5 / GPIO_03
7
GND
8
RXD5 / GPIO_04
9
DTR5 / GPIO_05
10
DSR5 / GPIO_06
11
CTS5 / GPIO_07
12
GND
13
VCC (+5V_Output)
14
GND
15
DCD6 / GPIO_10
16
TXD6 / GPIO_11
17
RTS6 / GPIO_12
18
RI6 / GPIO_13
19
GND
20
RXD6 / GPIO_14
21
DTR6 / GPIO_15
22
DSR6 / GPIO_16
23
CTS6 / GPIO_17
24
GND
25
GND
Note:
The pin of "VCC" is for the pull up of GPIO pins if it is nessary for user. Please do not
connect that pin over maximum 8mA because it will cause system unstable.
