Com Port Mode Select Header (Jp1) - Asus AAEON BOXER-8521AI User Manual

2.3.2

COM Port Mode Select Header (JP1)

COM Port Mode can be set by configuring Pins 1-2 and Pins 3-4 to be open or closed.
Closed
Closed
Closed
Slew Rate Control is set by Pins 5-6
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Mode Select
SD MODE_1
Closed
Open
Open
Slew Rate Control
SLEW
Closed
Open 250kbps
MODE_2
Open
Closed
Open
RS-232 RS-485
1Mbps 10Mbps
250kbps
RS232
RS485: RX
RS485: TX