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Ethernet AVB Endpoint User Guide www.xilinx.com 55
UG492 July 23, 2010
Core Interfaces
Interrupt Signals
Table 5-10 defines the interrupt signals asserted by the core. All interrupts are active high
and are automatically asserted. All interrupts, required by the “Software Drivers”
delivered with the core, are cleared by software access to an associated configuration
register. It is recommended that these interrupts are routed to the input of an EDK
Interrupt Controller module as part of the embedded processor subsystem.
Table 5-10: Interrupt Signals
Signal Direction Description
interrupt_ptp_timer Output This interrupt is asserted every 1/128
second as measured by the “RTC.” This acts
as a timer for the PTP software algorithms.
interrupt_ptp_tx Output This is asserted following the transmission
of any PTP packet from the “Tx PTP Packet
Buffers.”
interrupt_ptp_rx Output This is asserted following the reception of
any PTP packet into the “Rx PTP Packet
Buffers.”