Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
2
9.4.3
MAC Mode I C/SPI Managed
2
In MAC mode I C or SPI managed, the internal PHYs and the external PHY are accessed via the PMI.
The SMI slave and the Virtual PHY are not used in these modes.
2
The Virtual PHY and PMI interfaces are accessible via the I C/SPI slave interfaces or the EEPROM
Loader. Refer to Section 8.3, "SPI/I2C Slave Controller," on page 118 and Section 8.2.4, "EEPROM
Loader," on page 113 for additional information.
Figure 9.3 details the MII multiplexer management path connections for this mode.
MII Pins
MDIO_DIR
MDI
SMI Slave
MDO
MDO
MDIO_DIR
MDIO
MDC
Parallel
Master
MDCLK
MDI
MDC_DIR
MDC_OUT
MDC_IN
MDI
Virtual PHY
MDO
Management
Mode Selection
MDIO_DIR
Parallel
Slave
MDCLK
MDI
PHY2
MDO
MDIO_DIR
MDCLK
MDI
PHY1
MDO
MDIO_DIR
MDCLK
Management
Mode Selection
MDO MDCLK MDI MDO_EnN
PMI
Parallel Slave
2
Figure 9.3 MII Mux Management Path Connections - MAC Mode I C/SPI Managed
Revision 1.2 (04-08-08)
130
SMSC LAN9313/LAN9313i
DATASHEET
SMSC [ SMSC CORPORATION ]
