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USB3500 데이터시트(PDF) 21 Page - Microchip Technology |
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USB3500 데이터시트(HTML) 21 Page - Microchip Technology |
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21 / 45 page ![]() 2005 - 2016 Microchip Technology Inc. DS00002103A-page 21 USB3500 5.4.3 BIAS GENERATOR This block consists of an internal bandgap reference circuit used for generating the high speed driver currents and the biasing of the analog circuits. This block requires an external 12K , 1% tolerance, external reference resistor connected from RBIAS to ground. TABLE 5-1: DP/DM TERMINATION VS. SIGNALING MODE Signaling Mode UTMI+ Interface Settings Resistor Settings General Settings Tri-State Drivers XXb Xb 01b Xb Xb 0b0b0b0b0b Power-up or Vbus < VSESSEND 01b 0b 00b1b 1b 0b0b1b1b0b Host Settings Host Chirp 00b 0b 10b1b 1b 0b0b1b1b1b Host Hi-Speed 00b 0b 00b1b 1b 0b0b1b1b1b Host Full Speed X1b 1b 00b1b 1b 0b0b1b1b0b Host HS/FS Suspend 01b 1b 00b1b 1b 0b0b1b1b0b Host HS/FS Resume 01b 1b 10b1b 1b 0b0b1b1b0b Host low Speed 10b 1b 00b1b 1b 0b0b1b1b0b Host LS Suspend 10b 1b 00b 1b 1b 0b 0b 1b 1b 0b Host LS Resume 10b 1b 10b1b 1b 0b0b1b1b0b Host Test J/Test_K 00b 0b 10b1b 1b 0b0b1b1b1b Peripheral Settings Peripheral Chirp 00b 1b 10b 0b 0b 1b 0b 0b 0b 0b Peripheral HS 00b 0b 00b 0b 0b 0b 0b 0b 0b 1b Peripheral FS 01b 1b 00b 0b 0b 1b 0b 0b 0b 0b Peripheral HS/FS Suspend 01b 1b 00b 0b 0b 1b 0b 0b 0b 0b Peripheral HS/FS Resume 01b 1b 10b 0b 0b 1b 0b 0b 0b 0b Peripheral LS 10b 1b 00b 0b 0b 0b 1b 0b 0b 0b Peripheral LS Suspend 10b 1b 00b 0b 0b 0b 1b 0b 0b 0b Peripheral LS Resume 10b 1b 10b 0b 0b 0b 1b 0b 0b 0b Peripheral Test J/Test K 00b 0b 10b 0b 0b 0b 0b 0b 0b 1b OTG device, Peripheral Chirp 00b 1b 10b 0b 1b 1b 0b 0b 1b 0b OTG device, Peripheral HS 00b 0b 00b 0b 1b 0b 0b 0b 1b 1b OTG device, Peripheral FS 01b 1b 00b 0b 1b 1b 0b 0b 1b 0b OTG device, Peripheral HS/FS Suspend 01b 1b 00b 0b 1b 1b 0b 0b 1b 0b OTG device, Peripheral HS/FS Resume 01b 1b 10b 0b 1b 1b 0b 0b 1b 0b OTG device, Peripheral Test J/Test K 00b 0b 10b 0b 1b 0b 0b 0b 1b 1b |
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