Universal Serial Bus Timing - Intel 6 SERIES CHIPSET - DATASHEET 01-2011 Datasheet

Electrical Characteristics
Table 8-26. Universal Serial Bus Timing
Sym
t100
t101
t102
t103
t104
t105
t106
t107
t108
t109
t110
t111
t112
t113
t114
t115
NOTES:
1. Driver output resistance under steady state drive is specified at 28  at minimum and 43 
at maximum.
2. Timing difference between the differential data signals.
3. Measured at crossover point of differential data signals.
4. Measured at 50% swing point of data signals.
5. Measured from last crossover point to 50% swing point of data line at leading edge of EOP.
Datasheet
Parameter
Full-speed Source (Note 7)
USBPx+, USBPx- Driver Rise Time
USBPx+, USBPx- Driver Fall Time
Source Differential Driver Jitter
- To Next Transition
- For Paired Transitions
Source SE0 interval of EOP
Source Jitter for Differential
Transition to SE0 Transition
Receiver Data Jitter Tolerance
- T o Next Transition
- For Paired Transitions
EOP Width: Must accept as EOP
Width of SE0 interval during
differential transition
Low-speed Source (Note 8)
USBPx+, USBPx – Driver Rise Time
USBPx+, USBPx – Driver Fall Time
Source Differential Driver Jitter
To Next Transition
For Paired Transitions
Source SE0 interval of EOP
Source Jitter for Differential
Transition to SE0 Transition
Receiver Data Jitter Tolerance
- To Next Transition
- For Paired Transitions
EOP Width: Must accept as EOP
Width of SE0 interval during
differential transition
Min Max Units
4 20 ns
4 20 ns
–3.5 3.5 ns
–4 4 ns
160 175 ns
–2 5 ns
–18.5 18.5 ns
–9 9 ns
82 — ns
— 14 ns
75 300 ns
C L = 350 pF
75 300 ns
C L = 350 pF
–25 25 ns
–14 14 ns
1.25 1.50 µs
–40 100 ns
–152 152 ns
–200 200 ns
670 — ns
— 210 ns
Notes Fig
1, C L = 50
8-17
pF
1, C L = 50
8-17
pF
2, 3 8-18
4 8-19
5
3 8-18
4 8-19
1, 6
C L = 50 pF 8-17
1,6
C L = 50 pF 8-17
2, 3 8-18
4 8-19
5
3 8-18
4 8-19
325