XR21B1420IL28-0A Datasheet, PDF (35/60 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’, clear this bit to a ’0’
1: When USE_SUSPEND is ’1’, set this bit to a ’1’
0
TXT
0: When USE_SUSPEND is ’1’, clear this bit to a ’0’
1: When USE_SUSPEND is ’1’, set this bit to a ’1’
0
Reserved
These bits are reserved and should be written as ‘0’.
0
RS485
0: When USE_SUSPEND is ’1’, clear this bit to a ’0’
1: When USE_SUSPEND is ’1’, set this bit to a ’1’
0
CTS
0: When USE_SUSPEND is ’1’, clear this bit to a ’0’
1: When USE_SUSPEND is ’1’, set this bit to a ’1’
0
RTS
0: When USE_SUSPEND is ’1’, clear this bit to a ’0’
1: When USE_SUSPEND is ’1’, set this bit to a ’1’
0
CLK
0: When USE_SUSPEND is ’1’, clear this bit to a ’0’
1: When USE_SUSPEND is ’1’, set this bit to a ’1’
XR21B1420
SUSPEND_MODE (0x06B) - Read/Write
Bit
15
14
13
12
11
10
Default
Description
0
USE_SUSPEND
0: GPIO pins will retain output state when device is suspended’
1: GPIO pins will assert state defined in SUSPEND_STATE and mode defined in SUSPEND_MODE when device is sus-
pended.
0
Reserved
This bit is reserved and should be written as ‘0.’
0
DSR
0: When USE_SUSPEND is ’1’, output will be actively driven
1: When USE_SUSPEND is ’1’, output will be open drain
0
DTR
0: When USE_SUSPEND is ’1’, output will be actively driven
1: When USE_SUSPEND is ’1’, output will be open drain
0
RI
0: When USE_SUSPEND is ’1’, output will be actively driven
1: When USE_SUSPEND is ’1’, output will be open drain
0
CD
0: When USE_SUSPEND is ’1’, output will be actively driven
1: When USE_SUSPEND is ’1’, output will be open drain
© 2014 Exar Corporation
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Rev 1A