LAN9514_12 Datasheet, PDF (24/52 Pages) SMSC Corporation – USB 2.0 Hub and 10/100 Ethernet Controller

3.1.1
USB 2.0 Hub and 10/100 Ethernet Controller
Datasheet
Hub 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
20h
Vendor ID LSB Register (VIDL)
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)
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)
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)
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)
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)
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)
Refer to Table 3.4, “Config Data Byte 1 Register (CFG1) Format,” on page 31 for
details.
27h
Config Data Byte 2 Register (CFG2)
Refer to Table 3.5, “Config Data Byte 2 Register (CFG2) Format,” on page 32 for
details.
28h
Config Data Byte 3 Register (CFG3)
Refer to Table 3.6, “Config Data Byte 3 Register (CFG3) Format,” on page 33 for
details.
DEFAULT
24h
04h
14h
95h
00h
Note 3.1
9Bh
18h
00h
Revision 1.2 (02-29-12)
24
DATASHEET
SMSC LAN9514/LAN9514i