Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 11/27/2024
Public
Document Table of Contents

4.1.4. CCU System Integration

The following diagram shows the CCU system integration.

Figure 19. CCU System Integration

The following initiator ports interface to the CCU:

  • DSU: Cortex A55, Cortex A76 cores
  • F2H bridge: Agents in the FPGA fabric
  • TCU: To perform page table walks and to send/receive DVM v8.1 messages
  • PSS NoC: Enable HPS peripherals to access memory
  • GIC: To access LPI property and pending tables

The CCU interfaces to the following target ports:

  • MPFE: For accessing external SDRAM
  • MPFE registers: For accessing the MPFE registers
  • OCRAM: For accessing OCRAM
  • PSS NoC: Intended for fabric agents accessing HPS peripherals through F2H bridge
  • GIC: To access GIC registers

The clock manager provides clocks to the CCU.

The CCU issues a combined interrupt signal to GIC.

The reset manager controls the CCU reset, and also provides a Q-channel used to drain the F2H transactions before putting that interface in reset.