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CPBH Series CyberResearch
®
CPU Cards
16 ©Copyright 2005 CyberResearch, Inc
3.11 Serial Port Connectors
The CPBH's CN21, CN8, CN12 and CN14 provide four high speed
NS16C550 compatible UART with Read/Receive 16 byte FIFO
serial ports.
z CN21: COM1 Connector (5x2 Header)
PIN Description
PIN
Description
1 DCD0 2 DSR0
3 RXDD0 4 RTS0
5 TXDD0 6 CTS0
7 DTR0 8 RI0
9 GND 10 N/C
2
4
6
8
10
1
3
5
7
9
DSR0
RTS0
CTS0
N/C
RI0
DCD0
RXDD0
TXDD0
GND
DTR0
z CN8: COM2 Connector (5x2 Header)
PIN Description
PIN
Description
1 DCD1 2 DSR1
3 RXDD1 4 RTS1
5 TXDD1 6 CTS1
7 DTR1 8 RI1
9 GND 10 N/C
2
4
6
8
10
1
3
5
7
9
DSR1
RTS1
CTS1
N/C
RI1
DCD1
RXDD1
TXDD1
GND
DTR1
z CN12: COM3 Connector (5x2 Header)
PIN Description
PIN
Description
1 DCD2 2 DSR2
3 RXDD2 4 RTS2
5 TXDD2 6 CTS2
7 DTR2 8 RI2
9 GND 10 N/C
2
4
6
8
10
1
3
5
7
9
DSR2
RTS2
CTS2
N/C
RI2
DCD2
RXDD2
TXDD2
GND
DTR2