Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

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

3.7.3.3. Interfaces

The following figure shows the major external interfaces of the DSU.
Figure 12. DSU Interfaces
Table 55.  DSU Interfaces Details
Purpose Protocol Description
Trace ATB Transmitter ATB interfaces. Each core has an ATB interface to output ETM trace information.
Memory CHI Requester interface to main memory. The DSU is configured with one 256-bit CHI interface.
Peripheral port AXI Low-latency manager interface to external device memory.
Cluster to DebugBlock APB APB interface from the cluster (requester) to the DebugBlock (completer).
DebugBlock to cluster APB APB interface from the DebugBlock (requester) to the cluster (completer).
Power state control P-Channel P-Channels for DSU and core power management.
Clock state control Q-Channel Q-Channels for clock gating control.
WFE event - Signals for Wait For Event (WFE) wake up events.
Generic timer - Input for the generic timer count value. The count value is distributed to all cores. Each core outputs timer events.
GIC interfaces - Interrupts to individual cores. A single GIC Stream Protocol interface is shared by all cores.