Signal – AAEON EMB-9459T Rev.B User Manual
Page 28
M i n i - I T X
E M B - 9 4 5 9 T R e v . B
Chapter 2 Quick Installation Guide
2 - 15
21 BUSY
22 GND
23 PE
24 GND
25 SELECT
26 N.C
2.20 COM5, COM6, COM4, COM3 RS-232 Serial Port Connector
(CN12, CN13, CN15, CN16)
Pin
Signal Pin
Signal
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
10
N.C
2.21 Digital I/O (CN14)
This connector offers 4-pair of digital I/O functions and address is 2A1H. The
pin definitions are illustrated below:
Pin
Signal Pin
Signal
1
Digital- IN/OUT
2
Digital- IN/OUT
3
Digital- IN/OUT
4
Digital- IN/OUT
5
Digital- IN/OUT
6
Digital- IN/OUT
7
Digital- IN/OUT
8
Digital- IN/OUT
9 +5V
10
GND
Note:
The max. rating of Pin 1~ Pin 8 is 5V @ 8mA
The max. rating of Pin 9 is 5V @0.5A
The pin definitions and registers mapping are illustrated below:
Address: 2A1H
4 in / 4 out
Pin1 Pin2 Pin3 Pin4 Pin5 Pin6 Pin7 Pin8
GPI 27
GPI 26
GPI 25
GPI 24
GPO 23
GPO 22
GPO 21
GPO 20