Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 4/01/2024
Public
Document Table of Contents

15.5.2.4. AMBA* Trace Bus (ATB)

An ATB port on the FPGA interface boundary allows ATB-compatible trace sources, such as Nios® V trace, to be implemented as soft IP in the FPGA fabric, and to transport messages generated in the fabric to the CoreSight* trace infrastructure. A 32-bit AMBA* trace bus is a transport mechanism for trace data packets.

The main ATB funnel collects the ATB buses from all sources and merges them into one ATB that feeds directly into a centralized embedded trace FIFO.