isp1122 NXP Semiconductors, isp1122 Datasheet - Page 27

• Manufacturer Part Number: isp1122
• Description: Isp1122 Universal Serial Bus Stand-alone Hub
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 07002
Product specification
Fig 11. Mode 1: self-powered hub; ganged port power switching; global overcurrent detection.
dbook, full pagewidth
Power switch is low-ohmic PMOS device as specified in
100
1 k
to
4.95 V(min)
V CC
GND
INDV
SP/BP
OPTION
POWER SUPPLY
5.1 V KICK-UP
PSW5/GL5/GPSW
ISP1122
3%
PSW3/GL3
PSW4/GL4
PSW1/GL1
PSW2/GL2
OC5/GOC
OC1
OC2
OC3
OC4
4.95 V(min)
Rev. 03 — 29 March 2000
330
k
Section
47 k
low-ohmic
sense resistor
for overcurrent
detection
0.1 F
12.2.
PMOS switch
low-ohmic
ferrite bead
ferrite bead
ferrite bead
ferrite bead
ferrite bead
120
120
120
120
120
F
F
F
F
F
4.75 V
4.75 V
4.75 V
4.75 V
4.75 V
(min)
(min)
(min)
(min)
(min)
downstream
V BUS
D
D
GND
SHIELD
V BUS
D
D
GND
SHIELD
V BUS
D
D
GND
SHIELD
V BUS
D
D
GND
SHIELD
V BUS
D
D
GND
SHIELD
ports
USB stand-alone hub
MGR785
© Philips Electronics N.V. 2000. All rights reserved.
ISP1122
1
2
3
4
5
27 of 48