Visible to Intel only — GUID: sfo1410068921901
Ixiasoft
Visible to Intel only — GUID: sfo1410068921901
Ixiasoft
18.3.3.1. MDIO Interface
The MDIO interface signals are synchronous to l4_mp_clk in all supported modes.
Signal |
In/Out |
Width |
Description |
---|---|---|---|
emac_gmii_mdi_i | In |
1 |
Management Data In. The PHY generates this signal to transfer register data during a read operation. This signal is driven synchronously with the gmii_mdc_o clock. |
emac_gmii_mdo_o | Out |
1 |
Management Data Out. The EMAC uses this signal to transfer control and data information to the PHY. |
emac_gmii_mdo_o_e | Out |
1 |
Management Data Output Enable. This enable signal drives the gmii_mdo_o signal from an external three-state I/O buffer. This signal is asserted whenever valid data is driven on the gmii_mdo_o signal. The active state of this signal is high. |
emac_gmii_mdc_o | Out |
1 |
Management Data Clock. The EMAC provides timing reference for the gmii_mdi_i and gmii_mdo_o signals on MII through this aperiodic clock. The maximum frequency of this clock is 2.5 MHz. This clock is generated from the application clock through a clock divider. |