AT43301
14
Figure 9. Differential-to-EOP Transition Skew and EOP Width
Figure 10. Receiver Jitter Tolerance
Figure 11. Hub Differential Delay, Differential Jitter, and SOP Distortion
T
PERIOD
CROSSOVER
POINT
EXTENDED
DIFFERENTIAL
DATA LINES
DIFF. DATA-to-
SE0 SKEW
N*T
PERIOD
+T
DEOP
SOURCE EOP WIDTH: T
FEOPT
T
LEOPT
RECEIVER EOP WIDTH: T
FEOPR,
T
LEOPR
T
PERIOD
DIFFERENTIAL
DATA LINES
CONSECUTIVE
TRANSITIONS
N*T
PERIOD
+T
JR1
T
JR
T
JR1
T
JR2
CONSECUTIVE
TRANSITIONS
N*T
PERIOD
+T
JR1
CROSSOVER
POINT
DIFFERENTIAL
DATA LINES
A. DOWNSTREAM HUB DELAY WITH CABLE
50% POINT OF
INITIAL SWING
UPSTREAM
END OF
CABLE
HUB DELAY
DOWNSTREAM
T
HDD1
CROSSOVER
POINT
DOWNSTREAM
PORT
CROSSOVER
POINT
HUB DELAY
UPSTREAM
T
HDD2
UPSTREAM
PORT
V
SS
V
SS
V
SS
V
SS
B. UPSTREAM HUB DELAY WITHOUT CABLE
CROSSOVER
POINT
DOWNSTREAM
PORT
CROSSOVER
POINT
HUB DELAY
UPSTREAM
T
HDD1,
T
HDD2
UPSTREAM
PORT OR END
OF CABLE
V
SS
V
SS
C. UPSTREAM HUB DELAY WITH OR WITHOUT CABLE
