Datasheet

Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver
Datasheet
Revision 1.0 (07-14-09) 68 SMSC USB3320
DATASHEET
If using USB UART mode the UART data will appear at the SPK_L and SPK_R pins if the
corresponding SpkLeftEn, SpkRightEn, or MicEn switches are enabled.
If using USB Audio the TxdEn and RxdEn bits should not be set when the SpkLeftEn, SpkRightEn, or
MicEn switches are enabled. The USB single-ended receivers described in Section 5.2.1 are disabled
when either SpkLeftEn, SpkRightEn, or MicEn are set.
7.1.2.2 Carkit Interrupt Enable
Address = 1D-1Fh (read), 1Dh (write), 1Eh (set), 1Fh (clear)
7.1.2.3 Carkit Interrupt Status
Address = 20h (read only)
FIELD NAME BIT ACCESS DEFAULT DESCRIPTION
IdFloatRise 0 rd/w/s/c 0b When enabled an interrupt will be generated on the
alt_int of the RXCMD byte when the ID pin transitions
from non-floating to floating. The IdPullup bit in the
OTG Control register should be set.
IdFloatFall 1 rd/w/s/c 0b When enabled an interrupt will be generated on the
alt_int of the RXCMD byte when the ID pin transitions
from floating to non-floating. The IdPullup bit in the
OTG Control register should be set.
CarIntDet 2 rd 0b Not Implemented. Reads as 0b.
CarDpRise 3 rd 0b Not Implemented. Reads as 0b.
CarDpFall 4 rd 0b Not Implemented. Reads as 0b.
RidIntEn 5 rd/w/s/c 0b When enabled an interrupt will be generated on the
alt_int of the RXCMD byte when RidConversionDone
bit is asserted.
Note: This register bit is or’ed with the RidIntEn bit
of the Vendor Rid Conversion register
described in Section 7.1.3.3.
Reserved 7:6 rd 00b Read only, 0.
FIELD NAME BIT ACCESS DEFAULT DESCRIPTION
IdFloat 0 rd 0b Asserted when the ID pin is floating. IdPullup must be
enabled.
CarIntDet 1 rd 0b Not Implemented. Reads as 0b.
CarDp 2 rd 0b Not Implemented. Reads as 0b.