Serial Port 1 Connector In Rs-422 Mode (Cn1) - Advantech Mini-ITX AIMB-250 Series User Manual

AIMB-250 Series
2.4.9

Serial Port 1 Connector in RS-422 Mode (CN1)

2.4.9.1 Signal Description – Serial Port 1 Connector in RS-422 Mode (CN1)
Signal
TxD+/-
RxD+/-
40 AIMB-250 Series User's Manual
Serial output. This differential signal pair sends serial data to the communication
link. Data is transferred from Serial Port 2 Transmit Buffer Register to the
communication link, if the RTS register of the Serial Port 2 is set to LOW.
Serial input. This differential signal pair receives serial data from the
communication link. Received data is available in Serial Port 2 Receiver Buffer
Register.
Signal PIN PIN
TxD- 1
TxD+ 3
GND 5
NC 7
NC 9
Signal Description
Signal
2 RxD+
4 RxD-
6 NC
8 NC
10 NC