Symmetric Cryptographic Accelerator Hard IP User Guide

ID 714305
Date 11/28/2025
Public
Document Table of Contents

4.5. Dynamically Disabling the SM4 Capability

In addition to the Quartus® Prime parameter editor option, follow these steps to dynamically disable and re-enable the Symmetric Cryptographic Accelerator Hard IP's SM4 capability through the control register access:
  1. To dynamically disable the SM4 capability:
    1. Set the sm4_disable signal: 0x00[2] = 1'b1
    2. Set the cif_latency_pipe bits to 0x34: 0x08[23:16] = 0x34
  2. To dynamically re-enable the SM4 capability:
    1. Clear the sm4_disable signal: 0x00[2] = 1'b0
    2. Set the cif_latency_pipe bits to 0x3C: 0x08[23:16] = 0x3C