CX11656 HomePlug 1.0 PHY Data Sheet
3.1
MII Data Interface with MDI Control
Data communication between the CX11656 and the external host controller is provided
via the Media Independent Interface (MII) or a reduced General Purpose Serial Interface
(GPSI). The MII_GPSI_N select pin is included on the chip interface to configure the
CX11656 in either MII mode or GPSI mode. Access to the CX11656’s internal MII
status and control registers is via the Management Data Interface or a SPI interface. The
MDI_SPIS_N select pin is included on the chip interface to configure the CX11656 in
either MDI mode or SPI mode. The information that follows describes the MII
communication interface along with the MDI management interface as a typical example.
The MII data interface with MDI control is illustrated in Figure 3-2.
Figure 3-2. MII Data Interface with MDI Control
CX11656
MII_RX(3:0)
MII_RXCLK
MII_RX_ER
MII_RXDV
MII_CRS
MII_COL
External
Interface
Block
PowerPacket
MAC
PowerPacket
PHY
Host Controller
MII_TX(3:0)
MII_TXCLK
MII_TX_ER
MII_TXEN
MII_MDCLK
MII_MDIO
102069_006
3-2
Conexant Proprietary and Confidential Information
102069A
CONEXANT [ CONEXANT SYSTEMS, INC ]
