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USB2503A-HZH

Integrated USB 2.0 Compatible 3-Port Hub

SMSC -> Microchip 

5.2.1.3

I2C EEPROM Slave Address

Slave address is 1010000.

Integrated USB 2.0 Compatible 3-Port Hub

Datasheet

Note: 10-bit addressing is NOT supported.

5.2.2 In-Circuit EEPROM Programming

The EEPROM can be programmed via ATE by pulling RESET_N low (which tri-states the Hub’s

EEPROM interface and allows an external source to program the EEPROM).

5.2.3 EEPROM DATA

Table 5.1 User-Defined Descriptor Data

FIELD

VID

PID

BYTE

MSB:

LSB

SIZE

(BYTES)

DEFAULT

CFG

SELF

(HEX)

DEFAULT

CFG

BUS

(HEX)

DESCRIPTION

1:0

2

0424

0424

Vendor ID (assigned by USB-IF).

3:2

2

2503

2503

Product ID (assigned by Manufacturer).

DID

5:4

Config Data

6

Byte 1

Config Data

7

Byte 2

Non

8

Removable

Device

Port Disable

9

Self-Powered

Port Disable

A

Bus-Powered

Max Power

B

Self-Powered

Max Power

C

Bus-Powered

Hub Controller

D

Max Current

Self-Powered

Hub Controller

E

Max Current

Bus-Powered

Power-On

F

Time

2

0000

1

98

1

90

1

00

1

00

1

00

1

01

1

64

1

01

1

64

1

32

0000

1C

90

00

00

00

01

64

01

64

32

Device ID (assigned by Manufacturer).

Configuration data byte #1 for Hub options.

Configuration data byte #2 for Hub options.

Defines the ports that contain attached

devices (this is used only when Hub is part of

a compound device).

Selects the ports that will be permanently

disabled

Selects the ports that will be permanently

disabled

Max Current for this configuration (expressed

in 2mA units).

Max Current for this configuration (expressed

in 2mA units).

Max Current (expressed in 2mA units).

Max Current (expressed in 2mA units).

Time until power is stable.

Revision 2.3 (08-27-07)

18

DATASHEET

SMSC USB2503/USB2503A

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