Using the Auto-Negotiation Interrupt - 2.7 English

1G/10G/25G Switching Ethernet Subsystem Product Guide (PG292)

Document ID
PG292
Release Date
2022-05-11
Version
2.7 English

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 MicroBlazeâ„¢ processor).

The operation of this port is enabled or disabled and cleared through the AXI4-Lite Register 16, the Vendor-specific Auto-Negotiation Interrupt Control register.

  • When disabled, the 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 Register 16: Vendor-Specific Auto-Negotiation Interrupt Control.