CJB WEX-QM871, User Manual, Page: 23 / 90

23
OnBoard I/O Connector Pin Define
AUDIO: Audio with Box-header
AUDIO Pin Type Signal Note
Box-header 2.0mm
1 AI Line-in (Right)
2 AI Line-in (Left)
3
AI Line-in jack detect
4
AI Mic-in jack detect
5
AI Mic-in (Right)
6 AI Mic-in (Left)
7 AI Line-out jack detect
8 PWR Audio Ground
9 AO Line-out (Right)
10 AO Line-out (Left)
BAT: CMOS Battery with Box-header
BAT Pin Type Signal Note
Box-header 1.25mm
1 PWR
CR2032 Lithium Manganese
B2.5V~+3.3V
2 PWR Ground
COM2: RS-232/422/485 Serial Ports with Box-header
COM2 Pin Type
Signal
Note
RS-232
RS-422/
485 Full
RS-485
Half
Box-header 2.0mm
1 I
Data Carrier Detect
(DCD)
TX D- DATA-
COM2
RS-232
RS-422
RS-485
2 I
Data Set Ready
(DSR)
3 I
Received Data (RXD) TX D+ DATA+
4 O
Request To Send
5 O
Transmitted Data
(TXD)
RX D+
6 I
Clear To Send (CTS)
7 O
Data Terminal Ready
(DTR)
RX D-
8 I
Ring Indicator (RI#)
9 PWR
Ground
10 NC
Not connected