Cyclone® V Hard Processor System Technical Reference Manual

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

12.4.3. CSR Interface

The CSR interface connects to the level 4 (L4) bus and operates on the l4_sp_clk clock domain. The MPU subsystem uses the CSR interface to configure the controller and PHY, for example setting the memory timing parameter values or placing the memory in a low power state. The CSR interface also provides access to the status registers in the controller and PHY.