isp1122 NXP Semiconductors, isp1122 Datasheet - Page 28

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

Philips Semiconductors
9397 750 07002
Product specification
Fig 12. Mode 4: bus-powered hub; individual port power switching; individual overcurrent detection.
handbook, full pagewidth
Power switches 1 to 4 are low-ohmic PMOS devices as specified in
SP/BP
V CC
GND
INDV
OPTION
upstream
SHIELD
port
V BUS
PSW5/GL5/GPSW
GND
ISP1122
D
D
PSW4/GL4
PSW1/GL1
PSW2/GL2
PSW3/GL3
OC5/GOC
4.50 V(min)
OC1
OC2
OC3
OC4
330 k
(4 )
Rev. 03 — 29 March 2000
47 k
47 k
47 k
47 k
0.1 F
0.1 F
0.1 F
0.1 F
Section
PMOS switch
PMOS switch
PMOS switch
PMOS switch
low-ohmic
low-ohmic
low-ohmic
low-ohmic
12.2.
1
2
3
4
ferrite bead
ferrite bead
ferrite bead
ferrite bead
120
120
120
120
F
F
F
F
4.40 V
4.40 V
4.40 V
4.40 V
(min)
(min)
(min)
(min)
USB stand-alone hub
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
© Philips Electronics N.V. 2000. All rights reserved.
ports
MGR786
ISP1122
1
2
3
4
28 of 48