Connect Tech COM Express Type 2 Carrier Board - User Manual
Revision 0.03
26
Standard Serial
Description
The CCG0xx series of COM Express adapters features four serials ports. Port1 and Port2 are standard RS232 and
Port3 and Port4 are RS485. The SMSC SCH3114 Super I/O chip is used to facilitate the serial I/O. This chip requires
both an LPC bus connection from the module and BIOS support to operate. Ask your module vendor or examine
your module documentation to determine of BIOS support is available for the SCH3114.
The pinouts are as followss
Serial Connector RS232
Function RS232 Serial
Location
P24
Type
2x10 2mm Header
Pinout
Header
Pin
Signal
DB9 Pin
1
DCD
1
2
DSR
6
3
RXD
2
4
RTS
7
5
TXD
3
6
CTS
8
7
DTR
4
8
RI
9
9
GND
5
10
No Connect
11
DCD
1
12
DSR
6
13
RXD
2
14
RTS
7
15
TXD
3
16
CTS
8
17
DTR
4
18
RI
9
19
GND
5
20
No Connect
