AT43USB320A_04 ATMEL [ATMEL Corporation], AT43USB320A_04 Datasheet - Page 107
AT43USB320A_04
Manufacturer Part Number
AT43USB320A_04
Description
Full-speed USB Microcontroller with an Embedded Hub
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT43USB320A_04.pdf
(115 pages)
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Figure 28. Hub Differential Delay, Differential Jitter and SOP Distortion
Figure 29. Hub EOP Delay and EOP Skew
1443E–USB–4/04
Downstream
Upstream
End of
Cable
Port
V
V
Differential
Data Lines
SS
SS
Upstream
End of
A. Upstream EOP Delay with Cable
Cable
V
V
A. Downstream Hub Delay With Cable
SS
SS
50% Point of
Initial Swing
T
EOP-
Downstream
Port or End of
Hub Delay
50% Point of
Downstream
Initial Swing
T
HDD1
Upstream
Port or End of
Downstream
C. Upstream Hub Delay with or without Cable
T
EOP+
Cable
Upstream
Port
V
V
C. Upstream EOP Delay with or without Cable
SS
SS
Cable
Port
V
V
Crossover
SS
SS
Point
Crossover
T
HDD1,
Hub Delay
Upstream
Point
B. Upstream Hub Delay Without Cable
T
Downstream
Downstream
EOP
T
HDD2
Upstream
Upstream
B. Downstream EOP Delay without Cable
Port
Port
Port
Port
V
V
V
V
T
SS
SS
SS
Crossover
SS
EOP+
Point
Crossover
Extended
Point
Crossover
Crossover
Extended
Hub Delay
Upstream
Point
Point
T
HDD2
T
EOP-
Crossover
Point
T
EOP+
AT43USB320A
Crossover
Extended
Point
Crossover
Extended
Point
107
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