USB333X datasheet(65/85 Pages) MICROCHIP

65 / 85 page

 2009 - 2015 Microchip Technology Inc.

DS00001880A-page 65

USB333x

7.1.2.3

Carkit Interrupt Status

Address = 20h (read only)

CarDpFall

Not Implemented. Reads as 0b.

RidIntEn

rd/w/s/c

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 7.1.3.4.

Reserved

rd/w/s/c

Read only, 0.

Reserved

Read only, 0.

Field Name

Bit

Access

Default

Description

IdFloat

Asserted when the ID pin is floating. IdPullup must be

enabled.

VdatDet

1rd

VDAT_DET Comparator output

0b: No voltage is detected on DP

1b: Voltage detected on DP, IdatSinkEn must be set to

Note:

VdatDet

can also be read from the USB-IF

Charger Detection register described in

Section 7.1.3.4.

CarDp

Not Implemented. Reads as 0b.

RidValue

5:3

000b

Conversion value of Rid resistor

000: 0 ohms

001: 75 ohms

010: 102K ohms

011: 200K ohms

100: Reserved

101: ID floating

111: Error

Note:

RidValue

can also be read from the Vendor

Rid Conversion register described in

Section 7.1.3.4.

RidConversionDone

Automatically asserted by the USB333x 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 7.1.3.4.

Reserved

Read only, 0.

Field Name

Bit

Access

Default

Description

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