at43usb355 ATMEL Corporation, at43usb355 Datasheet - Page 110

• Manufacturer Part Number: at43usb355
• Description: At43usb355 Full-speed Usb Microcontroller With Embedded Hub, Adc And Pwm
• Manufacturer: ATMEL Corporation

Figure 34. Hub Differential Delay, Differential Jitter and SOP Distortion
Figure 35. Hub EOP Delay and EOP Skew
110
AT43USB355
Downstream
Upstream
End of
Cable
Port
V
V
Differential
Data Lines
Upstream
SS
SS
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
Port or End of
Upstream
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
T
EOP
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
Hub Delay
Extended
Upstream
Point
T
Point
HDD2
T
EOP-
Crossover
Point
T
EOP+
Crossover
Extended
Point
Crossover
Extended
Point
2603G–USB–04/06