USB334X datasheet(72/92 Pages) MICROCHIP

72 / 92 page

USB334x

DS00002646A-page 72

 2009-2018 Microchip Technology Inc.

7.1.2.4

Carkit Interrupt Latch

Address = 21h (read only with auto-clear)

Note 7-3

rd: Read Only with auto clear

7.1.3

VENDOR REGISTER ACCESS

The vendor specific registers include the range from 30h to 3Fh. These can be accessed by the ULPI immediate register

read / write.

7.1.3.1

HS Compensation Register

Address = 31h (read / write)

The USB334x is designed to meet the USB specifications and requirements when the DP and DM signals are properly

designed on the PCB. The DP and DM trace impedance should be 45Ω single ended and 90Ω differential. In cases

where the DP and DM traces are not able to meet these requirements the HS Compensation register can be used to

compensate for the losses in signal amplitude.

RidConversionDone

Automatically asserted by the USB334x 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, "Vendor Rid

Conversion," on page 74.

Reserved

Read only, 0.

Field Name

Bit

Access

Default

Description

IdFloat Latch

0rd

(Note 7-3)

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.

VdatDet Latch

1rd

If VdatDetIntEn is set and the VdatDet bit changes

state, this bit will be asserted.

CarDp Latch

Not Implemented. Reads as 0b.

RidConversionLatch

3rd

(Note 7-3)

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

0000b

Read only, 0.

Field Name

Bit

Access

Default

Description

USB334X 数据表(PDF) 72 Page - Microchip Technology

USB334X 数据表(HTML) 72 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92

数据表下载