Datasheet

Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver
Datasheet
SMSC USB3320 69 Revision 1.0 (07-14-09)
DATASHEET
7.1.2.4 Carkit Interrupt Latch
Address = 21h (read only with auto-clear)
Note 7.3 rd: Read Only with auto clear
RidValue 5:3 rd 000b Conversion value of Rid resistor
000: 0 ohms
001: 75 ohms
010: 102K ohms
011: 200K ohms
100: 440K ohms
101: ID floating
111: Error
Note: RidValue can also be read from the Vendor
Rid Conversion register described in
Section 7.1.3.3.
RidConversionDone 6 rd 0b Automatically asserted by the USB3320 when the
Rid Conversion is finished. The conversion will take
282uS. This bit will auto clear when the RidValue is
read from the Rid Conversion Register. Reading the
RidValue from the Carkit Interrupt Status register will
not clear either RidConversionDone status bit.
Note: RidConversionDone can also be read from
the Vendor Rid Conversion register
described in Section 7.1.3.3.
Reserved 7 rd 0b Read only, 0.
FIELD NAME BIT ACCESS DEFAULT DESCRIPTION
IdFloat Latch 0rd
(Note 7.3)
0b Asserted if the state of the ID pin changes from non-
floating to floating while the IdFloatRise bit is enabled
or if the state of the ID pin changes from floating to
non-floating while the IdFloatFall bit is enabled.
CarIntDet Latch 1 rd 0b Not Implemented. Reads as 0b.
CarDp Latch 2 rd 0b Not Implemented. Reads as 0b.
RidConversionLatch 3rd
(Note 7.3)
0b If RidIntEn is set and the state of the
RidConversionDone bit changes from a 0 to 1 this bit
will be asserted.
Reserved 7:4 rd 0000b Read only, 0.
FIELD NAME BIT ACCESS DEFAULT DESCRIPTION