3.10 Serial Port Connectors
The 3301260/3304000 offers two NS16C550 compatible UARTs
with Read/Receive 16-byte FIFO serial ports and four
internal
10-pin headers.
z
CN6~8/CN10: COM1~COM4 Connector (5x2 header)
PIN Description PIN Description
1
DCD
2
DSR
3
RXD
4
RTX
5
TXD
6
CTX
7
DTR
8
RI
9
GND
10
N/C
z
J3: RS-422/485 Connector (3x2 header)
PIN Description PIN Description
1
TX-
2
TX+
3
RX+
4
RX-
5
GND
6
VCC
DCD
1
RXD
3
TXD
5
DTR
7
GND
9
2
1
2
DSR
4
RTX
6
CTX
8
RI
10 N/C
6
5
z
JP1: COM2 Use RS-232 or RS-422/485 Select
Options Setting
1
2
RS-232 (default)
Open
RS-422/485
Short
16
Summary of Contents for 3301260
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