upd720110a Renesas Electronics Corporation., upd720110a Datasheet - Page 24

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

24
V
V
power OK
power-on
IH
IHZ
Hub port
Hub port
V
V
V
(min)
SS
(min)
IH
BUS
V
D+
D−
V
or
IH
V
SS
IL
D−/D+
D+/D−
∆t1
Connected
Figure 2-15. Full-/high-speed Device Connect Detection
Disconnected
Figure 2-16. Power-on and Connection Events Timing
Device
≥ 4.01 V
Figure 2-14. Low-/full-speed Disconnect Detection
Device
Attach Detected
t
SIGATT
D+
Data Sheet S15737EJ6V0DS
t
DCNN
t
ATTDB
D−
t
t
2SUSP
DDIS
Detected
Connect
Disconnect
t
DRST
Detected
t
RSTRCY
USB System Software
reads device speed
Reset Recovery
Time
µ
PD720110A