There is a default configuration when a standard ARM serial port is opened with ECUART.CSY:
Any infra-red capability is disabled.
The speed is set to 9600 bps.
The data format is 8 bits, no parity, 1 stop bit.
If parity were enabled, errors would cause pending read and writes to fail.
CTS output flow control is the only handshaking mode enabled.
DTR and RTS are both held high.
The XON and XOFF characters default to 0x11 (17 decimal) and 0x13 (19 decimal) respectively.
FIFOs are enabled.
Input and output buffers are both set to 1024 bytes.
There are no terminating characters.