The AVB interrupt signal ports are described in the following table.
| Signal Name | Direction | Description |
|---|---|---|
| interrupt_ptp_timer | Out | Asserted every 10 ms as a measure by the real time clock (RTC). This is used as a timer for the Precise Timing Protocol (PTP) software algorithms. |
| interrupt_ptp_tx | Out | Asserted following the transmission of any PTP packet from the TX PTP packet buffers. Following this interrupt, the software is required to record the TX Frame Time Stamp. |
| interrupt_ptp_rx | Out | This is asserted following the transmission of any PTP packet from the RX PTP packet buffers. Following this interrupt, the software is required to record the RX Frame Time Stamp. |