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UCS81003 数据表(PDF) 72 Page - Microchip Technology |
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UCS81003 数据表(HTML) 72 Page - Microchip Technology |
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72 / 108 page  UCS81003 DS20005334A-page 72 2014 Microchip Technology Inc. REGISTER 10-29: PRELOADED EMULATION STIMULUS 2 CONFIGURATION 2 REGISTER (ADDRESS 36H) R-0 R-0 R-0 R-0 R-1 R-0 R-0 R-1 S2_R2MAG<3:0> S2_R2<3:0> bit 7 bit 0 Legend: R = Readable bit W = Writable bit U = Unimplemented bit -n = Value at POR ‘1’ = Bit is set ‘0’ = Bit is cleared x = Bit is unknown bit 7-4 S2_R2MAG<3:0>: Determines the magnitude of the response to the stimulus. The bit decode changes meaning based on which response was selected. Data written to any field that is identified as “Do not use” will not be accepted. The data will not be updated and the settings will remain set at the previous value. • For S2_R2 settings 0000 - 0011, the response is a voltage applied on DPOUT/DMOUT pins. The S2_R2MAG bits specify the voltage relative to ground: • For S2_R2 settings 0100, 0111, 1101 - 1111, the response is a resistor connected on DPOUT/DMOUT to GND or VBUS. The S2_R2MAG bits specify the resistor value: • For S2_R2 settings 0110, 1001, 1100, the response is a voltage divider applied from VBUS to GND with “center” at DPOUT/DMOUT. The S2_R2MAG bits specify the minimum resistance of the voltage divider (Sum of R1 + R2): 0000 = Pull Down 0110 = 600 mV 1100 = 1800 mV 0001 =400 mV 0111 = 700 mV 1101 = 2000 mV 0010 =400 mV 1000 = 800 mV 1110 = 2200 mV 0011 =400 mV 1001 = 900 mV 1111 = Do not use 0100 =400 mV 1010 = 1400 mV 0101 =500 mV 1011 = 1600 mV 0000 =1.8 k 0110 =40 k 1100 =100 k 0001 =10 k 0111 =43 k 1101 =120 k 0010 =15 k 1000 =50 k 1110 =150 k 0011 =20 k 1001 =60 k 1111 = Do not use 0100 =25 k 1010 =75 k 0101 =30 k 1011 =80 k 0000 =93 k 0110 = 200 k 1100 =200 k 0001 =100 k 0111 = 200 k 1101 =200 k 0010 =125 k 1000 =93 k 1110 =200 k 0011 =150 k 1001 = 100 k 1111 = Do not use 0100 =200 k 1010 = 125 k 0101 =200 k 1011 = 150 k |
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