The following table describe the ports that are used to configure and monitor the core if the MDIO interface is not used.
Signal | Direction | Description |
---|---|---|
status_vector[15:0] | Output | See Table 3 for bit description. |
configuration_vector[4:0] | Input | Additional interface to program management Register 0 irrespective of the optional MDIO interface. See Table 1 for bit description. |
configuration_valid | Input | This signal is valid only when the MDIO interface is present. The
rising edge of this signal is the enable signal to overwrite the
Register 0 contents that were written from the MDIO interface. For
triggering a fresh update of Register 0 through
configuration_vector , this signal should be
deasserted and then reasserted. |
an_adv_config_vector[15:0] | Input | Auto-Negotiation: this interface is used to program Register 4, irrespective of MDIO interface. For more information, see Auto-Negotiation. See Table 2 for bit description. |
an_adv_config_val | Input | This signal is valid only when the MDIO interface is present. The rising edge of this signal is the enable signal to overwrite the Register 4 contents that were written from the MDIO interface. For triggering a fresh update of Register 4 through an_adv_config_vector, this signal should be deasserted and then reasserted. |
an_restart_config | Input | This signal is valid only when AN is present. The rising edge of this signal is the enable signal to overwrite Bit 9 of Register 0. For triggering a fresh AN Start, this signal should be deasserted and then reasserted. |
an_interrupt | Output |
When the MDIO module is selected through the Vivado IDE interface, this signal indicates an active-High interrupt for Auto-Negotiation cycle completion which needs to be cleared though MDIO. This interrupt can be enabled/disabled and cleared by writing to the appropriate PCS management register. When the MDIO module is not selected, this signal indicates AN Complete, which is asserted as long as the Auto-Negotiation is complete and AN is not restarted and cannot be cleared. |
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