A.6 Generic Timer signals

The processor uses a standard set of signals for the Generic Timer.

Table A-7 Generic Timer signals

Signal Direction Description
nCNTHPIRQ[CN:0] Output Hypervisor physical timer event.
nCNTPNSIRQ[CN:0] Output Non-secure physical timer event.
nCNTPSIRQ[CN:0] Output Secure physical timer event.
nCNTVIRQ[CN:0] Output Virtual physical timer event.
CNTCLKEN Input

Counter clock enable.

This clock enable must be asserted one cycle before the CNTVALUEB bus.

CNTVALUEB[63:0] Input

Global system counter value in binary format.

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