USB334X datasheet(71/92 Pages) MICROCHIP

71 / 92 page

 2009-2018 Microchip Technology Inc.

DS00002646A-page 71

USB334x

7.1.2.3

Carkit Interrupt Status

Address = 20h (read only)

CarDpRise

Not Implemented. Reads as 0b.

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, "Vendor Rid

Conversion," on page 74.

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 1.

Note:

VdatDet can also be read from the USB-IF

Charger Detection register described in

Section 7.1.3.3, "Headset Audio Mode," on

page 74.

CarDp

Not Implemented. Reads as 0b.

RidValue

5:3

000b

Conversion value of Rid resistor

000: 0Ω

001: 75Ω

010: 102 KΩ

011: 200 KΩ

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, "Vendor Rid Conversion,"

on page 74.

Field Name

Bit

Access

Default

Description

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