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USB333X датащи(PDF) 68 Page - Microchip Technology |
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USB333X датащи(HTML) 68 Page - Microchip Technology |
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68 / 85 page ![]() USB333x DS00001880A-page 68 2009 - 2015 Microchip Technology Inc. 7.1.3.4 Vendor Rid Conversion Address = 36-38h (read), 36h (write), 37h (set), 38h (clear) Note 7-5 rd: Read Only with auto clear Field Name Bit Access Default Description RidValue 2:0 rd/w 000b Conversion value of Rid resistor 000: 0 ohms 001: 75 ohms 010: 100K ohms 011: 200K ohms 100: Reserved 101: ID floating 111: Error Note: RidValue can also be read from the Carkit Interrupt Status Register. RidConversionDone 3rd (Note 7- 5) 0b 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 Carkit Interrupt Status Register. RidConversionStart 4 rd/w/s/c 0b When this bit is asserted either through a register write or set, the Rid converter will read the value of the ID resistor. When the conversion is complete this bit will auto clear. Reserved 5 rd/w/s/c 0b This bit must remain at 0. RidIntEn 6 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 Carkit Interrupt Status register. Reserved 7 rd 0b Read only, 0. |
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