BCM Advanced Research MX67QMD - Page 25

2-13
MX67QMD
Serial Port Connector: COM2, COM3, COM4
This connector is a 16550A high speed communications port that sends/
receives 16 bytes FIFOs. You can attach a serial device to it through an
optional serial port bracket.
8.CTS
3.TXD
1.DC
D
6.DSR
5.GND
4.DTR
7.RTS
2.RX
D
9.VCC_COM
PIN SIGNAL DESCRIPTION
1
2
3
4
5
6
7
8
9
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
VCC_COM
Data Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request To Send
Clear To Send
12V or 5V power output,
selected by JCMV2