Configuration via Protocol (CvP) Implementation User Guide: Agilex™ 3 FPGAs and SoCs

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ID 848621
Date 4/23/2025
Public
Document Table of Contents
Document Table of Contents x
1. Overview 2. CvP Description 3. CvP Topologies 4. Design Considerations 5. Document Revision History for the Configuration via Protocol (CvP) Implementation User Guide: Agilex™ 3 FPGAs and SoCs
1. Overview x
1.1. Benefits of Using CvP 1.2. CvP System 1.3. CvP Modes
1.3. CvP Modes x
1.3.1. CvP Limitations
1.3.1. CvP Limitations x
1.3.1.1. CvP Error Recovery
2. CvP Description x
2.1. Configuration Images 2.2. CvP Modes 2.3. Compression Features 2.4. Pin Description
2.2. CvP Modes x
2.2.1. CvP Initialization Mode 2.2.2. CvP Update Mode
3. CvP Topologies x
3.1. Single Endpoint 3.2. Multiple Endpoints
4. Design Considerations x
4.1. Designing CvP for an Open System 4.2. Designing CvP for a Closed System
4.1. Designing CvP for an Open System x
4.1.1. FPGA Power Supplies Ramp Time Requirement 4.1.2. PCIe Wake-Up Time Requirement
4.1.2. PCIe Wake-Up Time Requirement x
4.1.2.1. For CvP Initialization Mode 4.1.2.2. For CvP Update Mode
1. Overview
2. CvP Description
3. CvP Topologies
4. Design Considerations
5. Document Revision History for the Configuration via Protocol (CvP) Implementation User Guide: Agilex™ 3 FPGAs and SoCs

2.1. Configuration Images

In CvP, you split your bitstream into two images: periphery image and core image.

You use the Quartus® Prime Pro Edition software to generate the images:
  • Periphery image (*.periph.jic) — contains only CvP PCIe* core. The entire periphery image is static and cannot be reconfigured. The size of the peripheral image varies across different Quartus® Prime versions but it does not exceed the recommended QSPI flash size for periphery image (128 Mb).
  • Core image (*.core.rbf) — contains the entire device except the CvP PCIe* core. The maximum size of the *.core.rbf file does not exceed the configuration bit stream size for the FPGA configuration stipulated in the device datasheet.
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