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ISP1122A

Universal Serial Bus stand-alone hub

Philips Electronics 

Philips Semiconductors

5.2 ISP1122ABD (LQFP32)

5.2.1 Pinning

handbook, full pagewidth

ISP1122A

USB stand-alone hub

DP3 1

VCC 2

OC1 3

OC2 4

OC3 5

OC4 6

OC5/GOC 7

DM4 8

ISP1122ABD

24 DM0

23 DP1

22 DM1

21 DP5

20 DM5

19 INDV/SDA

18 OPTION/SCL

17 RESET

MBL165

Fig 4. Pin configuration LQFP32.

5.2.2 Pin description

Table 3: Pin description for LQFP32

Symbol [1]

Pin Type Description

Vreg(3.3) [2]

29 -

regulated supply voltage (3.3 V ± 10%) from internal

regulator; used to connect pull-up resistor on DP0 line

PSW2/GL2 [3] 30 O

modes 4 to 6: power switch control output for downstream

port 2 (open-drain, 6 mA)

modes 0 to 3, 7: GoodLink LED indicator output for

downstream port 2 (open-drain, 6 mA); to connect an LED

use a 330 Ω series resistor

GND

31 -

ground supply

DM3

32 AI/O downstream port 3 D− connection (analog) [4]

DP3

1

AI/O downstream port 3 D+ connection (analog) [4]

VCC

OC1

2

-

supply voltage; connect to USB supply VBUS (bus-powered or

hybrid-powered) or to local supply VDD (self-powered)

3

AI/I overcurrent sense input for downstream port 1 (analog [5])

OC2

4

AI/I overcurrent sense input for downstream port 2 (analog [5])

OC3

5

AI/I overcurrent sense input for downstream port 3 (analog [5])

OC4

6

AI/I overcurrent sense input for downstream port 4 (analog [5])

9397 750 06986

Preliminary specification

Rev. 01 — 27 March 2000

© Philips Electronics N.V. 2000. All rights reserved.

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