Ethernet MAC
UG0331 User Guide Revision 15.0 378
The following tables list the port names, port groups, and direction information for the default supported
MII, GMII and TBI PHY interfaces.
Table 320 • MII Ports
Port Name Port Group Direction Description
MII_TXD[3:0] MAC_MII_FABRIC Out Indicates MII transmit data
MII_TX_EN MAC_MII_FABRIC Out Indicates MII transmit data enable
MII_TX_ER MAC_MII_FABRIC Out Indicates MII transmit data error
MII_RXD[3:0] MAC_MII_FABRIC In Indicates MII receive data
MII_RX_ER MAC_MII_FABRIC In Indicates MII receive data error
MII_RX_DV MAC_MII_FABRIC In Indicates MII receive data valid
MII_CRS MAC_MII_FABRIC In Asynchronous carrier sense signal. Indicates at least one physical
device transmits on the medium.
MII_COL MAC_MII_FABRIC In Asynchronous collision sense signal. Indicates more than one
physical device transmits simultaneously on the medium.
MII_RX_CLK MAC_MII_FABRIC In Indicates MII receive clock. 25 MHz for 100 Mbps mode and
2.5 MHz for 10 Mbps mode.
MII_RX_CLK MAC_MII_FABRIC In Indicates MII management transmit clock. 25 MHz for 100-Mbps
mode and 2.5 MHz for 10 Mbps mode. MIII_TXD, MII_TX_EN,
MII_TX_ER signals are synchronized to MII_TX_CLK.
MII_MDC Out Indicates MII management data clock
MII_MDO_ED Out Indicates MII management data output enable
MII_MDO Out Indicates MII management data out
MII_MDI In Indicates MII management data input
Table 321 • GMII Ports
Port Name Port Group Direction Description
GMII_TXD[7:0] MAC_GMII_FABRIC Out GMII transmit data
GMII_TX_EN MAC_GMII_FABRIC Out GMII transmit data enable
GMII_TX_ER MAC_GMII_FABRIC Out GMII transmit data error
GMII_RXD[7:0] MAC_GMII_FABRIC Out GMII receive data
GMII_RX_ER MAC_GMII_FABRIC In GMII receive data error
GMII_RX_DV MAC_GMII_FABRIC In Indicates MII receive data valid
GMII_CRS MAC_GMII_FABRIC In Asynchronous carrier sense signal. Indicates at least one
physical device transmits on the medium.
GMII_COL MAC_GMII_FABRIC In Asynchronous collision signal. Indicates more than one physical
device transmits simultaneously on the medium.
GMII_RX_CLK MAC_GMII_FABRIC In Indicates GMII receive clock. 125 MHz for 1000-megabit mode,
25 MHz for 100-megabit mode, and 2.5 MHz for 10-megabit
mode.
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