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3.10 Serial Port Connectors
The HS-7238 offers one NS16C550 compatible UARTs with
Read/Receive 16-byte FIFO serial ports and two internal 10-pin
headers.
CN5: 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
CN4: 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