Preliminary W81181D/AD
- 14 -
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)
Hub Differential Driver Jitter to Next Transition
/to Paired Transition (including cable)
Data bit width distortion after SOP
Hub SE0 Delay Relative to t
HDD
Hub EOP Output Width Skew
t
DJ1
/t
DJ2
t
DEOP
t
HDD2
t
HDJ1
/t
HDJ2
t
SOP
t
EOPD
t
HESK
Notes 2, 3
-25
/-14
-40
-45
/-45
-60
0
-300
25
/14
100
300
45
/-45
60
200
300
nS
nS
nS
nS
nS
Notes 3
Notes 2, 3, 5
Notes 2, 3, 5
Notes 3, 5
nS
nS
nS
Notes 3, 5
Notes 3, 5
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 k
pull-up to 2.8 V on the D+ (DP) data line.
6. Low Speed timing have a 1.5 k
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.