Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 7/19/2024
Public

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15.5.2.6. Embedded Trace FIFO (ETF)

The MPU contains a 64 Kb centralized embedded trace FIFO (ETF) and also an additional 8 Kb ETF, running at the ETM clock frequency.

The centralized ETF hosts the merged ATB traffic as a circular buffer. Alternatively, it serves as a FIFO when the ATB traffic moves via the ATB replicator to either the trace port interface unit (TPIU), or the embedded trace router (ETR).