A.4.5. Performance event signals

Table A.21 shows the performance event signals.

Table A.21. Performance event signals

SignalI/OWidthDescription

event_clk_<tbuname>

O1Event of every TBU clock.
event_clk64_<tbuname>O1Event for every 64th TBU clock.
event_wr_access_<tbuname>O1Event of every write access that passes through the TBU.
event_rd_access_<tbuname>O1Event of every read access that passes through the TBU.
event_wr_refill_<tbuname>O1Event of the allocation in the TLB because of a write access in the corresponding TBU.
event_rd_refill_<tbuname>O1Event of the allocation in the TLB because of a read access in the corresponding TBU.

You can use the performance-related outputs from the system performance monitoring unit to count different events.

You must drive the spniden signal from a module that determines whether Secure events can be traced in the same way as processors that support TrustZone. See the ARM® CoreSight™ Architecture Specification for more information.

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