FW82801E Intel, FW82801E Datasheet - Page 67

• Manufacturer Part Number: FW82801E
• Description: Communications I/O Controller Hub
• Manufacturer: Intel

Advance Information Datasheet
Table 48. Universal Serial Bus Timing
NOTES:
1. Driver output resistance under steady state drive is specified at 28 ohms at minimum and 43 ohms at
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
6. Measured from 10% to 90% of the data signal
7. Full Speed Data Rate has minimum of 11.97 Mbps and maximum of 12.03 Mbps
8. Low Speed Data Rate has a minimum of 1.48 Mbps and a maximum of 1.52 Mbps
Sym
t122
t123
t102
t103
t104
t105
t106
t107
t122
t123
t110
t111
t112
t113
t114
t115
maximum
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
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
Parameter
Low Speed Source (Note 8)
Full Speed Source (Note 7)
-18.5
-152
-200
1.25
Min
-3.5
160
670
-25
-14
-40
82
75
75
-4
-2
-9
4
4
Max
18.5
1.50
175
300
300
100
152
200
210
3.5
20
20
14
25
14
4
5
9
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
Intel
1, C L = 50 pF
1, C L = 50 pF
C L = 350 pF
C L = 350 pF
C L = 50 pF
C L = 50 pF
Notes
®
2, 3
1, 6
2, 3
1,6
4
5
3
4
4
5
3
4
5
82801E C-ICH
Fig
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