SMSC LAN9311 User Manual

Page of 460
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
251
Revision 1.4 (08-19-08)
DATASHEET
 
14.2.8.3
Virtual PHY Identification MSB Register (VPHY_ID_MSB)
This read/write register contains the MSB of the Virtual PHY Organizationally Unique Identifier (OUI).
The LSB of the Virtual PHY OUI is contained in the 
.
Note 14.23
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 14.24
IEEE allows a value of zero in each of the 32-bits of the PHY Identifier.
Offset:
Index (decimal):
1C8h
2
Size:
32 bits
BITS
DESCRIPTION
TYPE
DEFAULT
31:16
RESERVED
(See 
)
RO
-
15:0
PHY ID
This field contains the MSB of the Virtual PHY OUI (
).
R/W
0000h