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SMSC LAN9514 Manual Do Utilizador

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USB Hub with Integrated 10/100 Ethernet Controller 
Datasheet
SMSC LAN9514
23
Revision 1.0 (04-20-09)
DATASHEET
 
3.1.1
Hub Configuration
EEPROM offsets 20h through 39h comprise the Hub Configuration parameters. 
 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)
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).
24h
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).
04h
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).
14h
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).
95h
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).
00h
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 
details.
9Bh
27h
Config Data Byte 2 Register (CFG2)
Refer to 
details.
18h
28h
Config Data Byte 3 Register (CFG3)
Refer to 
details.
00h
29h
Non-Removable Devices Register (NRD)
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.
02h