Cyclone® V Hard Processor System Technical Reference Manual

ID 683126
Date 8/28/2023
Public
Document Table of Contents

8.3.4.2. Master Security

Masters of the system interconnect are either secure, nonsecure, or the security is set on a per transaction basis. The DAP and Ethernet masters only perform secure accesses. The L2 cache master 0, FPGA-to-HPS-bridge, and DMA perform secure and nonsecure accesses on a per transaction basis. All other system interconnect masters perform nonsecure accesses.

Accesses to secure slaves by unsecure masters result in a response of DECERR and the transaction does not reach the slave.

All masters are secure at reset.