ISP1520 View Datasheet(PDF) - Philips Electronics

Part Name

Description

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ISP1520

Hi-Speed Universal Serial Bus hub controller

Philips Electronics 

Philips Semiconductors

ISP1520

Hi-Speed USB hub controller

9397 750 11689

Product data

Table 2: Pin description[1]…continued

Symbol[2]

Pin Type Description

RREF

7

AI

reference resistor connection; connect this pin through a

resistor of 12 kΩ ± 1 % to an analog band gap ground

reference

TEST_HIGH 8

-

test pin; connect to 3.3 V

VCC1

GND

9

-

10 -

analog supply voltage 1 (3.3 V)

ground supply

VCC4

11 -

TEST_HIGH 12 -

crystal and PLL supply voltage 4 (3.3 V)

test pin; connect to 3.3 V

VCC2

GND

13 -

14 -

transceiver supply voltage 2 (3.3 V)

ground supply

DM1

DP1

15 AI/O downstream facing port 1 D− connection (analog)[3]

16 AI/O downstream facing port 1 D+ connection (analog)[3]

TEST_LOW 17 -

connect to GND

TEST_HIGH 18 -

connect to +5.0 V through a 10 kΩ resistor

OC1_N

19 AI/I overcurrent sense input for downstream facing port 1

(analog/digital)

PSW1_N

20 I/O

output — power switch control output (open-drain) with an

internal pull-up resistor for downstream facing port 1

input — function of the pin when used as an input is given in

Table 5

GND

21 -

ground supply

GND

22 -

ground supply

VCC3

VREF(5V0)

23 -

24 -

digital supply voltage 3 (3.3 V)

reference voltage (5 V ± 5 %); used to power internal pull-up

resistors of PSWn_N pins and also for the analog

overcurrent detection

OC4_N

25 AI/I overcurrent sense input for downstream facing port 4

(analog/digital)

PSW4_N

26 I/O

output — power switch control output (open-drain) with an

internal pull-up resistor for downstream facing port 4

input — function of the pin when used as an input is given in

Table 5

OC3_N

27 AI/I overcurrent sense input for downstream facing port 3

(analog/digital)

PSW3_N

28 I/O

output — power switch control output (open-drain) with an

internal pull-up resistor for downstream facing port 3

input — function of the pin when used as an input is given in

Table 5

OC2_N

29 AI/I overcurrent sense input for downstream facing port 2

(analog/digital)

PSW2_N

30 I/O

output — power switch control output (open-drain) with an

internal pull-up resistor for downstream facing port 2

input — function of the pin when used as an input is given in

Table 5

Rev. 02 — 04 May 2004

© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

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