LAN9514 datasheet(33/49 Pages) SMSC

33 / 49 page

USB 2.0 Hub and 10/100 Ethernet Controller

Datasheet

SMSC LAN9514/LAN9514i

Revision 1.0 (11-24-09)

DATASHEET

3.2

EEPROM Defaults

The signature value of 0xA5 is stored at address 0. A different signature value indicates to the

EEPROM controller that no EEPROM or an un-programmed EEPROM is attached to the device. In

this case, the hardware default values are used, as shown in Table 3.11.

3.3

EEPROM Auto-Load

Certain system level resets (USB reset, POR, nRESET, and SRST) cause the EEPROM contents to

be loaded into the device. After a reset, the EEPROM controller attempts to read the first byte of data

from the EEPROM. If the value 0xA5 is read from the first address, then the EEPROM controller will

assume that the external Serial EEPROM is configured for auto-loading. If a value other than 0xA5 is

read from the first address, the EEPROM auto-load will not commense.

Note: The EEPROM contents are loaded for both the Hub and the Ethernet Controller as a result of

a POR or nRESET. The USB reset results only in the loading of the MAC address from the

EEPROM. A software reset (SRST) or a EEPROM Reload Command causes the EEPROM

contents related solely to the Ethernet Controller to be loaded.

Table 3.11 EEPROM Defaults

FIELD

DEFAULT VALUE

Ethernet Controller

MAC Address

FFFFFFFFFFFFh

Ethernet Controller

Full-Speed Polling

Interval (mS)

01h

Ethernet Controller

Hi-Speed Polling Interval

(mS)

04h

Ethernet Controller

Configuration Flags

05h

Ethernet Controller

Maximum Power (mA)

01h

Ethernet Controller

Vendor ID

0424h

Ethernet Controller

Product ID

EC00h

LAN9514 Datasheet(PDF) 33 Page - SMSC Corporation

LAN9514 Datasheet(HTML) 33 Page - SMSC Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

Datasheet Download

Link URL