
Chapter 2
–
Hardware Information
22
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2.4.16 Internal COM RS232 Header (CN47)
Pin
Signal
Pin
Signal
1
3.3V
2
NC
3
RXC_2
4
NC
5
TXC_2
6
NC
7
GND
8
NC
2.4.17 RS-232/485 Select (SW1)
Mode
S-1
S-2
S-3
S-4
1T/1R RS-232
On
On
1T/1R RS-485
Off
On
Enable RS-422/RS-485 bias
and termination resistors
On
Disable RS-422/RS-485 bias
and termination resistors
Off
250kbps for RS-232 and
RS-485/RS-422
On
RS-232 to 3Mbps
RS-485/RS-422 to 20Mbps
Off
Note: SW1 controls the RS-232/485 mode for CN6. See Ch 2.4.5 for Pin Definitions
Summary of Contents for Aaeon BOXER-8254AI
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