82801FB Datasheet, PDF (764/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

Electrical Characteristics
Figure 22-13. USB Rise and Fall Times
Figure 22-14. USB Jitter
Rise Time
Fall Time
C_L
Differential
Data Lines
10%
90%
90%
10%
C_L
t_R
t_F
Low-speed: 75 ns at C_L = 50 pF, 300 ns at C_L = 350 pF
Full-speed: 4 to 20 ns at C_L = 50 pF
High-speed: 0.8 to 1.2 ns at C_L = 10 pF
T period
Differential
Data Lines
Crossover
Points
Jitter
Consecutive
Transitions
Paired
Transitions
Figure 22-15. USB EOP Width
Tperiod
Differential
Data Lines
Data
Crossover
Level
EOP
Width
764
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet