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17
J4: LPC
Pin
Function
1
GND
2
GND
3
3V3
4
LPC_AD0
5
LPC_AD1
6
LPC_AD2
7
LPC_AD3
8
LPC_FRAME-
9
LPC_RST#
10
CLK_DBG
J5: COM2 / J6: COM3 / J13: COM4
Pin RS232
RS422
RS485
1
5V
NC
NC
2
GND
GND
GND
3
COM_P9
NC
NC
4
DTR-
RX-
Data-
5
CTS-
NC
NC
6
TXD
RX+
Data+
7
RTS-
NC
NC
8
RXD
TX+
NC
9
DSR-
NC
NC
10
DCD-
TX-
NC
JP12, JP13: COM2 Mode select
JP8
JP9
Model
(2-3)
(2-3)
RS232
(1-2)
(2-3)
RS485 Half Duplex
(1-2)
(1-2)
RS485/422 Full Duplex
JP14: Enable COM2 RS-485/422 Receiver Termination
Pin
Function
(1-2) Closed
High
(2-3) Closed
Low
