AT43USB320A-AC Atmel, AT43USB320A-AC Datasheet - Page 107

• Manufacturer Part Number: AT43USB320A-AC
• Description: IC USB MCU EMBED HUB AVR 100LQFP
• Manufacturer: Atmel
• Series: AVR®r

Specifications of AT43USB320A-AC

• Applications: USB Hub/Microcontroller
• Core Processor: AVR
• Controller Series: AT43USB
• Ram Size: 512 x 8
• Interface: SPI Serial, USB, UART
• Number Of I /o: 32
• Voltage - Supply: 4.4 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Program Memory Type: -

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