16
3.11 Serial Port Connectors
The HS-2604 offers two NS16C550 compatible UARTs with
Read/Receive 16-byte FIFO serial ports and four internal 10-pin
headers and one RS-422/485 connector.
CN14: COM1 Connector (5x2 Header)
PIN Description PIN Description
1
DCD1
2
DSR1
3
RXD1
4
RTS1
5
TXD1
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
RXD1
TXD1
GND
DTR1
CN15: COM2 Connector (5x2 Header)
PIN Description PIN Description
1
DCD2
2
DSR2
3
RXD2
4
RTS2
5
TXD2
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
RXD2
TXD2
GND
DTR2
CN12: COM3 Connector (5x2 Header)
PIN Description PIN Description
1
DCD3
2
DSR3
3
RXD3
4
RTS3
5
TXD3
6
CTS3
7
DTR3
8
RI3
9
GND
10
N/C
2
4
6
8
10
1
3
5
7
9
DSR3
RTS3
CTS3
N/C
RI3
DCD3
RXD3
TXD3
GND
DTR3