lan9311 Standard Microsystems Corp., lan9311 Datasheet - Page 288

• Manufacturer Part Number: lan9311
• Description: Lan9311/lan9311i Two Port 10/100 Managed Ethernet Switch With 16-bit Non-pci Cpu Interface
• Manufacturer: Standard Microsystems Corp.

Revision 1.2 (04-08-08)
14.4
14.4.1
14.4.2
INDEX #
0
1
2
3
4
5
This section details the various LAN9311/LAN9311i Ethernet PHY control and status registers. The
LAN9311/LAN9311i contains three PHY’s: Port 1 PHY, Port 2 PHY and a Virtual PHY. All PHY registers
follow the IEEE 802.3 (clause 22.2.4) specified MII management register set. All functionality and bit
definitions comply with these standards. The IEEE 802.3 specified register index (in decimal) is
included with each register definition, allowing for addressing of these registers via the MII serial
management protocol. For additional information on the MII management protocol, refer to the IEEE
802.3 Specification.
Each individual PHY is assigned a unique PHY address as detailed in
Addressing," on page
Virtual PHY Registers
The Virtual PHY provides a basic MII management interface for communication with the Host MAC for
connection to the Host as if it was attached to a single port PHY. The Virtual PHY registers differ from
the Port 1 & 2 PHY registers in that they are addressable via the memory map, as described in
Table
on page
Because the Virtual PHY registers are also memory mapped, their definitions have been included in
the
PHY MII addressable registers and their corresponding register index numbers is also included in
Table
Note: When serially accessed, the Virtual PHY registers are only 16-bits wide, as is standard for MII
Port 1 & 2 PHY Registers
The Port 1 and Port 2 PHY’s are comparable in functionality and have an identical set of non-memory
mapped registers. The Port 1 and Port 2 PHY registers are not memory mapped. These registers are
indirectly accessed through the
Data Register (HMAC_MII_DATA)
specified in IEEE 802.3 clause 22. Because the Port 1 & 2 PHY registers are functionally identical,
their register descriptions have been consolidated. A lowercase “x” has been appended to the end of
each PHY register name in this section, where “x” should be replaced with “1” or “2” for the Port 1
PHY or the Port 2 PHY registers respectively. A list of the Port 1 & 2 PHY MII addressable registers
and their corresponding register index numbers is included in
assigned a unique PHY address as detailed in
Ethernet PHY Control and Status Registers
System Control and Status Registers Section 14.2.8, "Virtual PHY," on page
PHY_BASIC_CONTROL_x
14.1, as well as serially. These modes of access are described in
14.4.
PHY_AN_LP_BASE_ABILITY_x
PHY_BASIC_STATUS_x
management of PHY’s.
246.
PHY_AN_ADV_x
PHY_ID_MSB_x
PHY_ID_LSB_x
Table 14.7 Port 1 & 2 PHY MII Serially Adressable Registers
SYMBOL
82.
Host MAC MII Access Register (HMAC_MII_ACC)
registers in the Host MAC via the MII serial management protocol
DATASHEET
Port x PHY Basic Control Register,
Port x PHY Basic Status Register,
Port x PHY Identification MSB Register,
Port x PHY Identification LSB Register,
Port x PHY Auto-Negotiation Advertisement Register,
Section 14.4.2.5
Port x PHY Auto-Negotiation Link Partner Base Page Ability
Register,
288
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Section 14.4.2.6
Section 7.1.1, "PHY Addressing," on page
REGISTER NAME
Table
14.7. Each individual PHY is
Section 14.4.2.2
Section 14.2.8, "Virtual PHY,"
Section 14.4.2.1
Section 14.4.2.4
Section 14.4.2.3
SMSC LAN9311/LAN9311i
246. A list of the Virtual
Section 7.1.1, "PHY
and
Host MAC MII
82.
Datasheet