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USB3370 数据表(PDF) 56 Page - Microchip Technology |
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USB3370 数据表(HTML) 56 Page - Microchip Technology |
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56 / 75 page  USB3370 DS00001915B-page 56 2012 - 2015 Microchip Technology Inc. 7.1.1.12 Debug Address = 15h (read only) 7.1.1.13 Scratch Register Address = 16-18h (read), 16h (write), 17h (set), 18h (clear) 7.1.2 CARKIT CONTROL REGISTERS The following registers are used to set-up and enable the USB UART functions. 7.1.2.1 Carkit Control Address = 19-1Bh (read), 19h (write), 1Ah (set), 1Bh (clear) This register is used to program the USB3370 into and out of the Carkit Mode. When entering the UART mode the Link must first set the desired TxdEn and the RxdEn bits and then transition to Carkit Mode by setting the CarkitMode bit in the Interface Control Register. When RxdEn is not set then the DATA[1] pin is held to a logic high. 7.1.2.2 Carkit Interrupt Enable Address = 1D-1Fh (read), 1Dh (write), 1Eh (set), 1Fh (clear) Field Name Bit Access Default Description Linestate[1:0] 1:0 rd 00b Contains the current value of Linestate[1:0]. Reserved 7:2 rd 000000b Read only, 0. Field Name Bit Access Default Description Scratch 7:0 rd/w/s/c 00h Empty register byte for testing purposes. Software can read, write, set, and clear this register and the PHY functionality will not be affected. Field Name Bit Access Default Description CarkitPwr 0 rd 0b Read only, 0. IdGndDrv 1 rd/w/s/c 0b Drives ID pin to ground TxdEn 2 rd/w/s/c 0b Connects UART TXD (DATA[0]) to DM RxdEn 3 rd/w/s/c 0b Connects UART RXD (DATA[1]) to DP Reserved 4 rd/w/s/c 0b Reserved 5 rd/w/s/c 0b Reserved 6 rd/w/s/c 0b CarkitDataMC 7 rd/w/s/c 0b When set the UPLI DATA[2] pin is changed from a driven 0 to tri-state, when carkit mode is entered. Field Name Bit Access Default Description IdFloatRise 0 rd/w/s/c 0b When enabled an interrupt will be generated on the alt_int of the RXCMD byte when the ID pin transitions from non-floating to floating. The IdPullup bit in the OTG Control register should be set. IdFloatFall 1 rd/w/s/c 0b When enabled an interrupt will be generated on the alt_int of the RXCMD byte when the ID pin transitions from floating to non-floating. The IdPullup bit in the OTG Control register should be set. VdatDetIntEn 2 rd/w/s/c 0b When enabled an interrupt will be generated on the alt_int of the RXCMD byte when the VDAT_DET Comparator changes state. |
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