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Philips Semiconductors
ISP1122
USB stand-alone hub
Product specification Rev. 03 — 29 March 2000 2 of 48
9397 750 07002
© Philips Electronics N.V. 2000. All rights reserved.
■ Full-scan design with high test coverage
■ Available in 32-pin SDIP, SO and LQFP packages.
3. Ordering information
4. Block diagram
Table 1: Ordering information
Type number Package
Name Description Version
ISP1122D SO32 plastic small outline package; 32 leads; body width 7.5 mm SOT287-1
ISP1122NB SDIP32 plastic shrink dual in-line package; 32 leads (400 mil) SOT232-1
ISP1122BD LQFP32 plastic low profile quad flat package; 32 leads; body 7 x 7 x 1.4 mm SOT358-1
This is a conceptual block diagram and does not include each individual signal.
Fig 1. Block diagram.
d
th
MGR774
I
2
C-BUS
INTERFACE
HUB
REPEATER
ISP1122
ANALOG
Tx/Rx
D+ D− overcurrent
detection
downstream
port 1
LED/
power switch
GoodLink/
POWER SWITCH/
OC DETECT
ANALOG
Tx/Rx
D+ D− overcurrent
detection
downstream
port 2
LED/
power switch
GoodLink/
POWER SWITCH/
OC DETECT
ANALOG
Tx/Rx
D+ D− overcurrent
detection
downstream
port 3
LED/
power switch
GoodLink/
POWER SWITCH/
OC DETECT
ANALOG
Tx/Rx
D+ D− overcurrent
detection
downstream
port 4
LED/
power switch
GoodLink/
POWER SWITCH/
OC DETECT
ANALOG
Tx/Rx
D+ D−
full
speed
upstream
port
LED
HUB
GoodLink
ANALOG
Tx/Rx
D+ D− overcurrent
detection
self/bus
powered
downstream
port 5
LED/
power switch
GoodLink/
POWER SWITCH/
OC DETECT
HUB
CONTROLLER
PACKET
GENERATOR
GENERAL
PORT
CONTROLLER
END OF
FRAME
TIMERS
PHILIPS
SIE
BIT CLOCK
RECOVERY
PLL
6 MHz
SUPPLY
REGULATOR
V
CC
3.3 V
5 V
V
reg(3.3)
SDA
INDV
OPTION
SCL