Processor Event Signals

Zynq UltraScale+ Device Technical Reference Manual (UG1085)

Document ID
UG1085
Release Date
2022-09-15
Revision
2.3 English

The PS supports processor events (Table: PL Event Signals) to and from the PL. These signals are asynchronous to the PS and PS provided PL clocks.

Table 35-7:      PL Event Signals

Type

Signal

Description

FPD events

APU event input

Causes CPU to wake from the wait for event (WFE) state.

APU event output

Asserted when one of the CPUs has executed a send event (SEV) instruction.

LPD events

RPU event input (2)

Event input to the RPU (one event signal to each RPU).

RPU event output (2)

Event output from the RPU (one event signal from each RPU).

Standby (FPD)

APU WFE

CPU standby mode. Asserted when CPU is waiting for an event.

APU WFI

CPU standby mode. Asserted when a CPU is waiting for an interrupt.

For further details, refer to Application Processing Unit and Real-time Processing Unit.