User's Manual

COMPANY CONFIDENTIAL
5
1.4 USB 2.0 Characteristics
Low / Full Speed
Parameter Minimum Typical Maximum Units
Input levels
Input high voltage (driven) 2.0 - - V
Input high voltage (floating) 2.7 - 3.6 V
Input low voltage - - 0.8 V
Differential input sensitivity 0.2 - - V
Differential common mode range 0.8 - 2.5 V
Output level
Output low voltage - - 0.3 V
Output high voltage (driven) 2.8 - 3.6 V
Output SE1 voltage 0.8 - V
Output signal crossover voltage 1.3 - 2.0 V
Driver
characteristics
Rise time 4 - 20 ns
Fall time 4 - 20 ns
Clock timing Full speed data rate - 12.0 - Mb/s
High Speed
Parameter Minimum Typical Maximum Units
Input levels
High-speed squelch detection
threshold
(differential signal amplitude)
100 - 150 mV
High-speed disconnect detection
threshold
(differential signal amplitude)
525 - 625 mV
High-speed data signaling
common mode voltage range
-50 - 500 mV
Output level
High-speed idle level -10.0 - 10.0 mV
High-speed data signaling high 360 - 440 mV
High-speed data signaling low -10.0 - 10.0 mV
Chirp J level (differential voltage) 700 - 1100 mV
Chirp k level (differential voltage) -900 - -500 mV
Driver
characteristics
Rise time (10% - 90%) 500 - - ps
Fall time (10% - 90%) 500 - - ps
Clock timing Full speed data rate - 480 - Mb/s