LAN9313 Datasheet, PDF (215/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
13.1.7.4 Virtual PHY Identification LSB Register (VPHY_ID_LSB)
Offset:
1CCh
Index (decimal): 3
Size:
32 bits
This read/write register contains the LSB of the Virtual PHY Organizationally Unique Identifier (OUI).
The MSB of the Virtual PHY OUI is contained in the Virtual PHY Identification MSB Register
(VPHY_ID_MSB).
BITS
DESCRIPTION
31:16 RESERVED
(See Note 13.27)
15:10 PHY ID
This field contains the lower 6-bits of the Virtual PHY OUI (Note 13.28).
9:4 Model Number
This field contains the 6-bit manufacturer’s model number of the Virtual PHY
(Note 13.28).
3:0 Revision Number
This field contain the 4-bit manufacturer’s revision number of the Virtual PHY
(Note 13.28).
TYPE
RO
R/W
R/W
R/W
DEFAULT
-
00h
00h
0h
Note 13.27 The reserved bits 31-16 are used to pad the register to 32-bits so that each register is on
a DWORD boundary. When accessed serially (through the MII management protocol), the
register is 16-bits wide.
Note 13.28 IEEE allows a value of zero in each of the 32-bits of the PHY Identifier.
SMSC LAN9313/LAN9313i
215
DATASHEET
Revision 1.2 (04-08-08)