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USB334X 데이터시트(PDF) 74 Page - Microchip Technology

부품명 USB334X
상세설명  Enhanced Single Supply Hi-Speed USB ULPI Transceiver
PDF  92 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB334X 데이터시트(HTML) 74 Page - Microchip Technology

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USB334x
DS00002646A-page 74
2009-2018 Microchip Technology Inc.
7.1.3.3
Headset Audio Mode
Address = 33h (read / write)
7.1.3.4
Vendor Rid Conversion
Address = 36-38h (read), 36h (write), 37h (set), 38h (clear)
VdatDet
4rd
0
VDAT_DET Comparator output. IdatSinkEn must be set
to 1 to enable the comparator.
0b: No voltage is detected on DP or Linestate[1:0] is
not equal to 00b.
1b: Voltage detected on DP, and Linestate[1:0] = 00b.
Note:
VdatDet can also be read from the Carkit
Interrupt Status register described in
Section 7.1.2.3, "Carkit Interrupt Status," on
page 71.
Reserved
5-7
rd
Read only, 0.
Note:
The charger detection should be turned off before beginning USB operation. USB-IF Charger Detection
Bits 2:0 should be set to 000b.
Field Name
Bit
Access
Default
Description
HeadsetAudioEn
3:0
rd/w
0000b
When this field is set to a value of ‘1010’, the Head-
set Audio Mode is enabled as described in Section
6.8.1, "Headset Audio Mode," on page 61.
Reserved
7:4
rd
0h
Read only, 0.
Field Name
Bit
Access
Default
Description
RidValue
2:0
rd/w
000b
Conversion value of Rid resistor
000: 0Ω
001: 75Ω
010: 100 KΩ
011: 200 KΩ
100: 440 KΩ
101: ID floating
111: Error
Note:
RidValue can also be read from the Carkit
Interrupt Status Register.
RidConversionDone
3rd
(Note 7-4)
0b
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 Carkit Interrupt Status Register.
Field Name
Bit
Access
Default
Description



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