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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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USB333X датащи(PDF) 18 Page - Microchip Technology |
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USB333X датащи(HTML) 18 Page - Microchip Technology |
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18 / 85 page  USB333x DS00001880A-page 18 2009 - 2015 Microchip Technology Inc. Note 4-6 The resistor value follows the 27% Resistor ECN published by the USB-IF. Note 4-7 The values shown are valid when the USB RegOutput bits in the USB IO & Power Management register are set to the default value. Note 4-8 An automatic waiver up to 200mV is granted to accommodate system-level elements such as measurement/test fixtures, captive cables, EMI components, and ESD suppression. This parameter can be tuned using VariSense technology, as defined in the HS Compensation Register section of Section 7.0, "ULPI Register Map". Termination Driver Output Impedance for HS ZHSDRV Steady state drive 40.5 45 49.5 Ω Input Impedance ZINP RX, RPU, RPD disabled 1.0 MΩ Pull-up Resistor Impedance RPU Bus Idle, Note 4-6 0.900 1.24 1.575 kΩ Pull-up Resistor Impedance RPU Device Receiving, Note 4-6 1.425 2.26 3.09 kΩ Pull-dn Resistor Impedance RPD Note 4-6 14.25 16.9 20 kΩ HS FUNCTIONALITY Input levels HS Differential Input Sensitivity VDIHS | V(DP) - V(DM) | 100 mV HS Data Signaling Common Mode Voltage Range VCMHS -50 500 mV HS Squelch Detection Threshold (Differential) VHSSQ VariSense[1:0] = 00b Note 4-8 100 150 mV HS Disconnect Threshold VHSDSC 525 625 mV Output Levels High Speed Low Level Output Voltage (DP/DM referenced to GND) VHSOL 45Ω load -10 10 mV High Speed High Level Output Voltage (DP/DM referenced to GND) VHSOH 45Ω load 360 440 mV High Speed IDLE Level Output Voltage (DP/DM referenced to GND) VOLHS 45Ω load -10 10 mV Chirp-J Output Voltage (Differential) VCHIRPJ HS termination resistor disabled, pull-up resistor connected. 45Ω load. 700 1100 mV Chirp-K Output Voltage (Differential) VCHIRPK HS termination resistor disabled, pull-up resistor connected. 45Ω load. -900 -500 mV Leakage Current OFF-State Leakage Current ILZ ±10 uA Port Capacitance Transceiver Input Capacitance CIN Pin to GND 5 10 pF TABLE 4-6: DC CHARACTERISTICS: ANALOG I/O PINS (DP/DM) (CONTINUED) Parameter Symbol Conditions MIN TYP MAX Units |
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