LAN9313 Datasheet, PDF (131/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
9.4.4 PHY Mode Unmanaged
In PHY mode unmanaged, the Virtual PHY is accessed via the external MII management pins. The
Port 1/2 PHYs, SMI slave, and the PMI are not used in this mode.
The Virtual PHY interface is accessible via the EEPROM Loader. Refer to Section 8.2.4, "EEPROM
Loader," on page 113 for additional information.
Figure 9.4 details the MII multiplexer management path connections for this mode.
MDI SMI Slave
MDO
MDCLK
MDIO_ DIR
Parallel
Master
MDI Virtual PHY
MDO
MDCLK
MDIO_ DIR
Parallel
Slave
MDI PHY2
MDO
MDIO_ DIR
MDCLK
MDI PHY1
MDO
MDIO_ DIR
MDCLK
Management
Mode Selection
MII Pins
MDIO_ DIR
MDO
MDI
MDC_ DIR
MDC_ OUT
MDC_IN
MDIO
MDC
Management
Mode Selection
MDO MDCLK MDI MDO_EnN
PMI
Parallel Slave
Figure 9.4 MII Mux Management Path Connections - PHY Mode Unmanaged
SMSC LAN9313/LAN9313i
131
DATASHEET
Revision 1.2 (04-08-08)