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| XR21B1422IL40-0A Datasheet, PDF (49/60 Pages) Exar Corporation – Enhanced 2-Ch Full-Speed USB UART | |||
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Bit
6
5
4
3
2
1
0
Default
Description
0
VEND_STRING1
0: Corresponding field has not been programmed. Values will not be read from OTP.
1: Corresponding field has been programmed. Values will be read from OTP.
0
FLUSH
0: Corresponding field has not been programmed. Values will not be read from OTP.
1: Corresponding field has been programmed. Values will be read from OTP.
0
RELEASE
0: Corresponding field has not been programmed. Values will not be read from OTP.
1: Corresponding field has been programmed. Values will be read from OTP.
0
USB_ATTRIBUTES
0: Corresponding field has not been programmed. Values will not be read from OTP.
1: Corresponding field has been programmed. Values will be read from OTP.
0
MAX_POWER
0: Corresponding field has not been programmed. Values will not be read from OTP.
1: Corresponding field has been programmed. Values will be read from OTP.
0
PID
0: Corresponding field has not been programmed. Values will not be read from OTP.
1: Corresponding field has been programmed. Values will be read from OTP.
0
VID
0: Corresponding field has not been programmed. Values will not be read from OTP.
1: Corresponding field has been programmed. Values will be read from OTP.
PIN_CFG_USB_STAT1 (0x01F) - Read/Write OTP
Controls the configuration of the USB_STAT1 pin during suspend state
Bit
7:5
4:2
1:0
Default
Description
0
Reserved
These bits are reserved and should be written as â0â.
0
SEL
000: Assert logic â1â during SUSPEND or USB BUS_RESET else logic â0â
001: Assert logic â1â during SUSPEND else logic â0â
010: Assert logic â1â during LOW_PWR else logic â0â
011: Assert logic â1â during USB BUS_RESET else logic â0â
100: Assert logic â1â during SUSPEND or USB BUS_RESET else logic â0â
101: Assert logic â0â during SUSPEND else logic â1â
110: Assert logic â0â during LOW_PWR else logic â1â
111: Assert logic â0â during USB BUS_RESET else logic â1â
0
CTRL
00: Invalid, do not use
01: Output, open drain
10: Output, push-pull
11: Invalid, do not use
XR21B1422
© 2014 Exar Corporation
49 / 60
exar.com/XR21B1422
Rev 1A
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