LAN9303MI-AKZE Datasheet, PDF (142/386 Pages) SMSC Corporation – Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII
Datasheet
10.4.4
Port 0 PHY Mode I²C Managed
In PHY mode I²C managed, the Port 1/2 PHYs are accessed via the PMI, and the Virtual PHY is
accessed via the external MII management pins. The SMI slave is not used in this mode.
The Virtual PHY and PMI parallel interfaces are accessible via the I²C slave interface or the EEPROM
Loader. Refer to Section 8.4, "EEPROM Loader," on page 121 for additional information.
Figure 10.2 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 10.4 MII Mux Management Path Connections - PHY Mode I²C Managed
Revision 1.5 (07-08-11)
142
DATASHEET
SMSC LAN9303M/LAN9303Mi