AT43301
13
Timing Waveforms
Figure 5. Data Signal Rise and Fall Time
Figure 6. Full-Speed Load
Figure 7. Low-speed Downstream Port Load
Figure 8. Differential Data Jitter
V
CRS
RISE TIME
FALL TIME
DIFFERENTIAL
DATA LINES
10%
90%
90%
10%
t
R
t
F
TxD+
TxD-
R
S
C
L
R
S
C
L
C
L
= 50pF
TxD+
TxD-
R
S
C
L
R
S
C
L
C
L
= 200pF to 600pF
3.6V
1.5K
Ω
T
PERIOD
CROSSOVER
POINTS
DIFFERENTIAL
DATA LINES
CONSECUTIVE
TRANSITIONS
N*T
PERIOD
+T
XJR1
PAIRED
TRANSITIONS
N*T
PERIOD
+T
XJR2
