AM335X-PAC Series User Manual version 2.0.1 Page: 40
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2.7. Overview of the Serial Ports
The following is a description of the functionality for the three serial ports contained in the LinPAC
AM335x series embedded controller, and are based on the RS-232 or RS-485 interfaces.
2.7.1. Introduction to Serial port for LP-22xx
The following illustrates the ports contained on the LP-22xx. The information is organized as
follows table:
Device name Definition in LP-22xx SDK
Description
Default
Baud rate
-
/dev/ttyO1 or COM1
Internal communication with the
XV-board modules
115200
-
Console port
RS-232 (RxD, TxD and GND);
Non-isolated
115200
ttyO4
/dev/ttyO4 or COM4
RS-232 (RxD, TxD and GND);
Non-isolated
9600
ttyO2
/dev/ttyO2 or COM2
RS-485 (Data+, Data-); Non-isolated
9600
ttyO5
/dev/ttyO5 or COM5
RS-485 (Data+, Data-); 2500 VDC isolated
9600
