2-Port USB 2.0 Hub Controller

 

 

 

 

 

Datasheet

 

 

Table 5.1 User-Defined Descriptor Data (continued)

 

 

 

 

 

 

 

 

 

DEFAULT

DEFAULT

 

 

BYTE

 

CFG

CFG

 

 

MSB:

SIZE

SELF

BUS

 

FIELD

LSB

(BYTES)

(HEX)

(HEX)

DESCRIPTION

 

 

 

 

 

 

Config Data

6

1

88

0C

Configuration data byte #1 for Hub options.

Byte 1

 

 

 

 

 

 

 

 

 

 

 

Config Data

7

1

90

90

Configuration data byte #2 for Hub options.

Byte 2

 

 

 

 

 

 

 

 

 

 

 

Non

8

1

00

00

Defines the ports that contain attached

Removable

 

 

 

 

devices (this is used only when Hub is part of

Device

 

 

 

 

a compound device).

 

 

 

 

 

 

Port Disable

9

1

00

00

Selects the ports that will be permanently

Self-Powered

 

 

 

 

disabled

 

 

 

 

 

 

Port Disable

A

1

00

00

Selects the ports that will be permanently

Bus-Powered

 

 

 

 

disabled

 

 

 

 

 

 

Max Power

B

1

01

01

Max Current for this configuration (expressed

Self-Powered

 

 

 

 

in 2mA units).

 

 

 

 

 

 

Max Power

C

1

64

64

Max Current for this configuration (expressed

Bus-Powered

 

 

 

 

in 2mA units).

 

 

 

 

 

 

Hub Controller

D

1

01

01

Max Current (expressed in 2mA units).

Max Current

 

 

 

 

 

Self-Powered

 

 

 

 

 

 

 

 

 

 

 

Hub Controller

E

1

64

64

Max Current (expressed in 2mA units).

Max Current

 

 

 

 

 

Bus-Powered

 

 

 

 

 

 

 

 

 

 

 

Power-On

F

1

32

32

Time until power is stable.

Time

 

 

 

 

 

 

 

 

 

 

 

5.2.3.1EEPROM Offset 1:0(h) - Vendor ID

BIT

 

 

NUMBER

BIT NAME

DESCRIPTION

 

 

 

15:8

VID_MSB

Most Significant Byte of the Vendor ID.

 

 

 

7:0

VID_LSB

Least Significant Byte of the Vendor ID.

 

 

 

5.2.3.2EEPROM Offset 3:2(h) - Product ID

BIT

 

 

NUMBER

BIT NAME

DESCRIPTION

 

 

 

15:8

PID_MSB

Most Significant Byte of the Product ID.

 

 

 

7:0

PID_LSB

Least Significant Byte of the Product ID.

 

 

 

Revision 2.3 (08-27-07)

20

SMSC USB2502

 

DATASHEET