XR21B1420IL28-0A Datasheet, PDF (36/60 Pages) Exar Corporation – Enhanced 1-Ch Full-Speed USB UART

Bit
9:8
7
6
5:4
3
2
1
0
Default
Description
0
Reserved
These bits are reserved and should be written as ‘0’.
0
RXT
0: When USE_SUSPEND is ’1’, output will be actively driven
1: When USE_SUSPEND is ’1’, output will be open drain
0
TXT
0: When USE_SUSPEND is ’1’, output will be actively driven
1: When USE_SUSPEND is ’1’, output will be open drain
0
Reserved
These bits are reserved and should be written as ‘0’.
0
RS485
0: When USE_SUSPEND is ’1’, output will be actively driven
1: When USE_SUSPEND is ’1’, output will be open drain
0
CTS
0: When USE_SUSPEND is ’1’, output will be actively driven
1: When USE_SUSPEND is ’1’, output will be open drain
0
RTS
0: When USE_SUSPEND is ’1’, output will be actively driven
1: When USE_SUSPEND is ’1’, output will be open drain
0
CLK
0: When USE_SUSPEND is ’1’, output will be actively driven
1: When USE_SUSPEND is ’1’, output will be open drain
REVISION_ID (0x260) - Read-Only
Bit
15:0
Default
0
Revision ID
Description
USB_STATUS (0x262) - Read-Only
Bit
15:14
13
Default
Description
0
Reserved
These bits are reserved and should be written as ‘0’.
0
STATE1
Returns the current state of the USB_STAT2 pin.
© 2014 Exar Corporation
36 / 60
XR21B1420
exar.com/XR21B1420
Rev 1A