The auto-negotiation function has an an_interrupt port. This is designed
to be used with common microprocessor bus architectures (for example, the CoreConnect
bus interfacing to a
MicroBlaze™
processor).
The operation of this port is enabled or disabled and cleared through the MDIO Register 16, the Vendor-specific Auto-Negotiation Interrupt Control register.
- When disabled, this port is permanently tied to logic 0.
- When enabled, this port is set to logic 1 following the completion of an auto-negotiation cycle. It remains High until it is cleared by writing 0 to bit 16.1 (Interrupt Status bit) of the Register 16: Vendor-Specific Auto-Negotiation Interrupt Control.