USB2502-HT Ver la hoja de datos (PDF) - SMSC -> Microchip

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USB2502-HT

2-Port USB 2.0 Hub Controller

SMSC -> Microchip 

Table 5.1 User-Defined Descriptor Data (continued)

2-Port USB 2.0 Hub Controller

Datasheet

FIELD

BYTE

MSB:

LSB

SIZE

(BYTES)

DEFAULT

CFG

SELF

(HEX)

DEFAULT

CFG

BUS

(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

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

BIT

NUMBER

15:8

7:0

BIT NAME

VID_MSB

VID_LSB

DESCRIPTION

Most Significant Byte of the Vendor ID.

Least Significant Byte of the Vendor ID.

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

BIT

NUMBER

15:8

7:0

BIT NAME

PID_MSB

PID_LSB

DESCRIPTION

Most Significant Byte of the Product ID.

Least Significant Byte of the Product ID.

Revision 2.3 (08-27-07)

20

DATASHEET

SMSC USB2502

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