upd720110a Renesas Electronics Corporation., upd720110a Datasheet - Page 25

• Manufacturer Part Number: upd720110a
• Description: Usb 2.0 Hub Controller
• Manufacturer: Renesas Electronics Corporation.

CSB pin operation
Hub power supply
Note The active period of the CSB pin is in effect only when the PPB pin is ON.
Up port D+ line
PPB pin output
CSB pin input
CSB(4:1)
PPB(4:1)
There is a delay time of approximately 500
CLKO30MO
region
Power supply ON
Bus power: Up port connection
Self-power: Power supply ON
V
V
V
V
DD
DD
SS
SS
Figure 2-19. Overcurrent Response Timing
BUS reset
Figure 2-18. CSB/PPB Timing
Port power
supply ON
Figure 2-17. Clock Output
t
C3H
Data Sheet S15737EJ6V0DS
500 µs
µ
CSB detection
delay time
s duration at the CSB pin.
t
OC
t
C3C
500 µs
DEVICE
connection
inrush current
CSB active period
500 µs
t
C3L
µ
500 µs
PD720110A
Output cut-off
Overcurrent
generation
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