XR21B1424_17 Datasheet, PDF (50/64 Pages) Exar Corporation – Enhanced 4-Ch Full-Speed USB UART

Bit
3
2
1
0
Default
Description
0
RX_OPEN
0: Do not automatically flush the RX FIFO
1: Automatically flush the RX FIFO when the COM port is opened
0
TX_CLOSE
0: Do not automatically flush the TX FIFO
1: Automatically flush the TX FIFO when the COM port is closed
0
TX_OPEN
0: Do not automatically flush the TX FIFO
1: Automatically flush the TX FIFO when the COM port is opened
0
Reserved
This bit is reserved and should be written as ’0’.
XR21B1424
50 / 64
exar.com/XR21B1424
Rev 1C