W81181D Datasheet, PDF (14/18 Pages) Winbond – USB HUB CONTROLLER

Preliminary W81181D/AD
Electrical Characteristics, continued
PARAMETER
SYM. CONDITIONS MIN. MAX. UNIT
Source Differential Driver Jitter to Next Transition
/to Paired Transition
Differential to EOP transition Skew
Hub Differential Data Delay(without cable)
tDJ1
/tDJ2
tDEOP
tHDD2
Notes 2, 3
Notes 3
Notes 2, 3, 5
-25
25 nS
/-14 /14 nS
-40 100 nS
300 nS
Hub Differential Driver Jitter to Next Transition
/to Paired Transition (including cable)
tHDJ1
/tHDJ2
Notes 2, 3, 5
-45
45 nS
/-45 /-45
Data bit width distortion after SOP
tSOP ^{Notes 3, 5}
-60
60 nS
Hub SE0 Delay Relative to tHDD
Hub EOP Output Width Skew
tEOPD
tHESK
Notes 3, 5
Notes 3, 5
0
200 nS
-300 300 nS
Notes:
1. Measured from 10% to 90% of the data signal.
2. Timing difference between the differential signals.
3. Measured at crossover point of differential data signals.
4. The rising and falling edges should be smoothly transiting(monotonic)
5. Full Speed timing have a 1.5 kΩ pull-up to 2.8 V on the D+ (DP) data line.
6. Low Speed timing have a 1.5 kΩ pull-up to 2.8 V on the D- (DM) data line.
7. The maximum load specification is the maximum effective capacitive load allowed that meets the target hub VBUS droop of
330 mV.
8. All other USB Electrical Characteristics refer to USB spec Rev 1.1 7.3.2 and 7.3.3.
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