Phy management interface access, Register (pmi_access), Access only) – SMSC LAN9311i User Manual
Page 245: Section 14.2.7.2, Phy management interface access register, Pmi_access), Datasheet
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
245
Revision 1.4 (08-19-08)
DATASHEET
14.2.7.2
PHY Management Interface Access Register (PMI_ACCESS)
This register is used to control the management cycles to the PHYs. A PHY access is initiated when
this register is written. This register is used in conjunction with the
to perform write operations to the PHYs.
Note:
This register is only accessible by the EEPROM Loader and NOT by the Host bus. Refer to
Section 10.2.4, "EEPROM Loader," on page 150
for additional information.
Offset:
0A8h
EEPROM Loader
Access Only
Size:
32 bits
BITS
DESCRIPTION
TYPE
DEFAULT
31:16
RESERVED
RO
-
15:11
PHY Address (PHY_ADDR)
These bits select the PHY device being accessed. Refer to
for information on PHY address
assignments.
WO
00000b
10:6
MII Register Index (MIIRINDA)
These bits select the desired MII register in the PHY. Refer to
"Ethernet PHY Control and Status Registers," on page 287
for detailed
descriptions on all PHY registers.
WO
00000b
5:2
RESERVED
RO
-
1
RESERVED
Note:
This bit must always be written with a value of 1.
WO
0b
0
RESERVED
RO
0b