USB Hub with Integrated 10/100 Ethernet Controller

Datasheet

3.1.1Hub Configuration

EEPROM offsets 20h through 39h comprise the Hub Configuration parameters. Table 3.3 describes these parameters and their default ROM values (Values assumed if no valid EEPROM present).

Table 3.3 Hub Configuration

EEPROM

 

 

 

OFFSET

 

DESCRIPTION

DEFAULT

 

 

 

20h

Vendor ID LSB Register (VIDL)

24h

 

Least Significant Byte of the Vendor ID. This is a 16-bit value that uniquely identifies

 

 

the Vendor of the user device (assigned by USB-Interface Forum).

 

 

 

 

21h

Vendor ID MSB (VIDM)

04h

 

Most Significant Byte of the Vendor ID. This is a 16-bit value that uniquely identifies

 

 

the Vendor of the user device (assigned by USB-Interface Forum).

 

 

 

 

22h

Product ID LSB Register (PIDL)

14h

 

Least Significant Byte of the Product ID. This is a 16-bit value that the Vendor can

 

 

assign that uniquely identifies this particular product (assigned by the OEM).

 

 

 

 

23h

Product ID MSB Register (PIDM)

95h

 

Most Significant Byte of the Product ID. This is a 16-bit value that the Vendor can

 

 

assign that uniquely identifies this particular product (assigned by the OEM).

 

 

 

 

24h

Device ID LSB Register (DIDL)

00h

 

Least Significant Byte of the Device ID. This is a 16-bit device release number in BCD

 

 

format (assigned by the OEM).

 

 

 

 

25h

Device ID MSB Register (DIDM)

Note 3.1

 

Most Significant Byte of the Device ID. This is a 16-bit device release number in BCD

 

 

format (assigned by the OEM).

 

 

 

 

26h

Config Data Byte 1 Register (CFG1)

9Bh

 

Refer to Table 3.4, “Config Data Byte 1 Register (CFG1) Format,” on page 29 for

 

 

details.

 

 

 

 

 

27h

Config Data Byte 2 Register (CFG2)

18h

 

Refer to Table 3.5, “Config Data Byte 2 Register (CFG2) Format,” on page 30 for

 

 

details.

 

 

 

 

 

28h

Config Data Byte 3 Register (CFG3)

00h

 

Refer to Table 3.6, “Config Data Byte 3 Register (CFG3) Format,” on page 31 for

 

 

details.

 

 

 

 

 

29h

Non-Removable Devices Register (NRD)

02h

 

Indicates which port(s) include non-removable devices.

 

 

0 = Port is removable

 

 

1 = Port is non-removable

 

 

Informs the host if one of the active ports has a permanent device that is not

 

 

detachable from the Hub.

 

 

Note:

The device must provide its own descriptor data.

 

 

Bit 7 = RESERVED

 

 

Bit 6 = RESERVED

 

 

Bit 5 = 1; Port 5 non-removable

 

 

Bit 4 = 1; Port 4 non-removable

 

 

Bit 3 = 1; Port 3 non-removable

 

 

Bit 2 = 1; Port 2 non-removable

 

 

Bit 1 = 1; Port 1 non-removable

 

 

Bit 0 is RESERVED, always = 0b

 

 

Note:

Bit 1 must be set to 1 by firmware for proper identification of the Ethernet

 

 

 

Controller as a non-removable device.

 

 

 

 

 

SMSC LAN9514

23

Revision 1.0 (04-20-09)

 

DATASHEET