XR22804 Datasheet, PDF (29/47 Pages) Exar Corporation – Hi-Speed USB to 10/100 Ethernet Bridge with 4 UARTs

Bit
0
Default
0
En
0: Disable IR mode
1: Enable IR mode
Description
XR22804
REMOTE_WAKEUP (0x05F) - Read/Write
Bit
15:4
3
2
1:0
Default
Description
0x000
Reserved
These bits are reserved and should be written as ‘0’.
0
RX_En
0: RX pin remote wakeup is disabled
1: A high to low transition on the RX pin will cause a resume request to be sent to the USB host
1
RI_En
0: RI# pin remote wakeup is disabled
1: A high to low transition on the RI# pin will cause a resume request to be sent to the USB host
0x0
Reserved
These bits are reserved and should be written as ‘0’.
TX_FIFO_RESET (0x060) - Write Only
Bit
15:1
0
Default
Description
0x0000 Reserved
These bits are reserved and should be written as ‘0’.
000
Reset
0: No effect
1: Resets the TX FIFO to empty
TX_FIFO_FILL (0x061) - Read Only
Bit
15:11
10:0
Default
Description
0x00
0x000
Reserved
These bits are reserved and should be written as ‘0’.
Fill
Number of bytes in the TX FIFO
© 2015 Exar Corporation
29 / 47
exar.com/XR22804
Rev 1B