Symmetric Cryptographic Accelerator Hard IP User Guide

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ID 714305
Date 11/28/2025
Public
Document Table of Contents
Document Table of Contents x
1. Introduction 2. Interface Overview 3. Parameters 4. Designing with the IP 5. Block Description 6. Cryptographic IP Data Profiles 7. Configuration Registers 8. Design Example 9. Document Revision History for the Symmetric Cryptographic Accelerator Hard IP User Guide
1. Introduction x
1.1. Terminology 1.2. IP Overview 1.3. Release Information 1.4. Device Family Support 1.5. Resource Utilization
1.2. IP Overview x
1.2.1. IP Applications
2. Interface Overview x
2.1. Clock Signals 2.2. Reset Signals 2.3. AXI-ST Interface 2.4. AXI-Lite Interface
4. Designing with the IP x
4.1. Installing and Licensing IP Cores 4.2. Specifying the IP Parameters and Options 4.3. Generated File Structure 4.4. Symmetric Cryptographic Accelerator Hard IP Flow 4.5. Dynamically Disabling the SM4 Capability 4.6. Error Handling 4.7. Error Reporting 4.8. Resetting the IP 4.9. Channel Definition and Allocation 4.10. Byte Ordering 4.11. AXI-ST Single Packet Mode 4.12. AXI-ST Multiple Packet Mode
4.1. Installing and Licensing IP Cores x
4.1.1. IP Evaluation Mode
4.6. Error Handling x
4.6.1. Steps to Record and Report the Received Errors to the Soft Logic 4.6.2. Detected Error Handling 4.6.3. Key RAM ECC Error Handling
4.6.2. Detected Error Handling x
4.6.2.1. Recovering from a Recoverable Error 4.6.2.2. Recovering from an Internal Error
5. Block Description x
5.1. Reset Sequencer 5.2. AXI-ST Ready Latency 5.3. AXI Adapter 5.4. Integrity Check Value Comparison 5.5. GCM Padding and Depadding
5.3. AXI Adapter x
5.3.1. MAC Packing 5.3.2. Data Last Indicator 5.3.3. Stream and Channel ID Buffering 5.3.4. TKEEP and LAST_SEGMENT Signals Generation 5.3.5. MAC Dropping on Decryption
5.5. GCM Padding and Depadding x
5.5.1. GCM Padding 5.5.2. GCM Depadding
6. Cryptographic IP Data Profiles x
6.1. MAC Security Profile (MACsec) 6.2. IP Security Profile (IPsec) 6.3. Generic GCM Profile (GCM) 6.4. Generic XTS Profile (XTS)
6.1. MAC Security Profile (MACsec) x
6.1.1. MACsec Flow 6.1.2. AXI-ST Interface Using MAC Security (MACsec) Profile Pattern
6.2. IP Security Profile (IPsec) x
6.2.1. AXI-ST Interface Using IP Security (IPsec) Profile Pattern
6.3. Generic GCM Profile (GCM) x
6.3.1. AXI- ST Interface Using Generic GCM Profile Pattern
6.4. Generic XTS Profile (XTS) x
6.4.1. AXI-ST Interface Using Generic XTS Profile Pattern
8. Design Example x
8.1. Functional Description 8.2. Crypto VSIP Top Block Descriptions 8.3. Test Configurations 8.4. Software Requirements 8.5. Simulation Requirements 8.6. Steps to Generate the Design Example 8.7. Running Simulation Tests 8.8. Running Hardware Tests
8.2. Crypto VSIP Top Block Descriptions x
8.2.1. Clock and Reset 8.2.2. Host Interface
8.7. Running Simulation Tests x
8.7.1. Steps to Simulate the Design Example
8.8. Running Hardware Tests x
8.8.1. Supported Boards 8.8.2. Steps to Compile the Design Example for Hardware 8.8.3. Steps to Run the Design Example on Hardware
1. Introduction
2. Interface Overview
3. Parameters
4. Designing with the IP
5. Block Description
6. Cryptographic IP Data Profiles
7. Configuration Registers
8. Design Example
9. Document Revision History for the Symmetric Cryptographic Accelerator Hard IP User Guide

5.1. Reset Sequencer

The reset sequencer manages soft and hard IP resets within the Symmetric Cryptographic Accelerator Hard IP through the reset and reset acknowledgment signals.
Figure 10. Reset Sequencer Block Connections
The following flow describes the reset assertion:
  1. The subsystem_cold_rst_n assertion resets the entire Symmetric Cryptographic Accelerator Hard IP. Each of the soft and hard IP blocks observes the reset signal assertion.
  2. The synchronous reset acknowledgment signal (rst_ack) asserts when the reset assertion has propagated through all of the logic.
  3. Each of the soft and hard IP blocks assert a corresponding reset acknowledgement signal back to the Reset Sequencer.
  4. The Reset Sequencer asserts the subsystem_cold_rst_ack_n signal to logic once the block receives the soft and hard IP blocks reset acknowledgement signals.
The following flow describes the reset deassertion:
  1. The subsystem_cold_rst_n signal deassertion triggers the reset deassertion to the entire Symmetric Cryptographic Accelerator Hard IP. Consequently, each of the soft and hard IP blocks observes the reset signal de-assertion.
  2. The synchronous reset acknowledgment signal (rst_ack) deasserts when the reset deassertion propagated through all of the logic.
  3. Each of the soft and hard IP blocks deassert a corresponding reset acknowledgement signal back to the Reset Sequencer.
  4. The Reset Sequencer deasserts the subsystem_cold_rst_ack_n signal to logic once the block receives the soft and hard IP blocks reset acknowledgement signals from the soft and hard IP blocks.
Note: The Symmetric Cryptographic Accelerator Hard IP keeps deasserting the ready signals on the AXI-ST and AXI-Lite interfaces until the AES/SM4 Inline Cryptographic Accelerator is fully out of reset and ready to accept the incoming packets.
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