W81181D データシートの表示（PDF） - Winbond

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W81181D

USB HUB CONTROLLER

Winbond 

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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