UPD720112GK-9EU-A Renesas Electronics America, UPD720112GK-9EU-A Datasheet - Page 27

• Manufacturer Part Number: UPD720112GK-9EU-A
• Description: IC HUB CTLR USB2.0 4-PORTS QFP
• Manufacturer: Renesas Electronics America

Specifications of UPD720112GK-9EU-A

• Controller Type: USB 2.0 Hub Controller
• Interface: USB 2.0
• Voltage - Supply: 2.5 V, 3.3 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 80-TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -

Downstream
Port of Hub
Upstream
End of
Cable
V
V
SS
SS
A. Downstream EOP Delay with Cable
50% Point of
Initial Swing
EOP Delay:
EOP Skew:
Low-speed timings are determined in the same way for:
Upstream Port
t
(t
t
t
End of Cable
Downstream
FEOPD
FHESK
LEOPD
Port of Hub
EOPy
t
EOP-
V
V
SS
SS
or
Figure 2-14. Hub EOP Delay and EOP Skew
means that this equation applies to t
= t
= t
and t
C. Upstream EOP Delay with or without Cable
t
EOP+
EOP+
EOPy
LHESK
− t
− t
HDDx
EOP-
Data Sheet S16616EJ3V0DS
t
EOP-
Downstream
Port of Hub
Port of Hub
Upstream
V
V
SS
SS
B. Downstream EOP Delay without Cable
t
Crossover
Extended
EOP+
Point
EOP-
and t
Crossover
Extended
Point
EOP+
)
t
EOP-
t
EOP+
µ
Crossover
Extended
PD720112
Point
25