Device Design Guidelines: Agilex™ 3 FPGAs and SoCs

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ID 849807
Date 7/09/2025
Public
Document Table of Contents
Document Table of Contents x
1. Introduction to Agilex™ 3 Device Design Guidelines 2. System Specification 3. Device Selection 4. Design Entry 5. Board and Software consideration 6. Design Implementation, Analysis, Optimization and Verification 7. Debugging
1. Introduction to Agilex™ 3 Device Design Guidelines x
1.1. Design Flow 1.2. Introduction to Agilex™ 3 Device Design Guide Revision History
2. System Specification x
2.1. Design Specification 2.2. Install Quartus® Prime Software 2.3. IP selection 2.4. Simulation 2.5. Preparing for Design Entry 2.6. I/O Summary 2.7. Using SDM in your devices 2.8. System Specification Revision History
2.3. IP selection x
2.3.1. IP cores 2.3.2. HPS IP
2.3.1. IP cores x
2.3.1.1. Interface Protocol IP cores
2.4. Simulation x
2.4.1. RTL Simulation 2.4.2. Simics® Simulator
2.5. Preparing for Design Entry x
2.5.1. Coding Styles and Design Recommendation 2.5.2. Platform Designer
3. Device Selection x
3.1. Device Variant 3.2. Device Selection Revision History
3.1. Device Variant x
3.1.1. Speed Grade and Package 3.1.2. Power option 3.1.3. Device Migration within Agilex™ 3 3.1.4. PLL 3.1.5. Logic element, Embedded memory, and DSP 3.1.6. I/O and LVDS SERDES 3.1.7. MIPI D-PHY 3.1.8. Transceiver 3.1.9. Hard Processor System
4. Design Entry x
4.1. Design entry for FPGA 4.2. Design entry for Nios® V 4.3. Design entry for HPS 4.4. Design Entry Revision History
4.1. Design entry for FPGA x
4.1.1. Configuration Consideration 4.1.2. I/O and LVDS SERDES 4.1.3. PLL and Clock Planning 4.1.4. EMIF 4.1.5. Transceiver Planning 4.1.6. Sensors 4.1.7. MIPI D-PHY
4.1.1. Configuration Consideration x
4.1.1.1. Partial Reconfiguration 4.1.1.2. SEU
4.1.2. I/O and LVDS SERDES x
4.1.2.1. Making FPGA Pin Assignments Checklist 4.1.2.2. Early Pin Planning and I/O Assignment Analysis for the FPGA Device 4.1.2.3. Agilex™ 3 I/O Features and Pin Connections
4.1.2.3. Agilex™ 3 I/O Features and Pin Connections x
4.1.2.3.1. I/O Signaling Type 4.1.2.3.2. Selectable Standards and Flexible I/O Banks 4.1.2.3.3. Agilex™ 3 Dual-Purpose and Special Pin Connections 4.1.2.3.4. Agilex™ 3 I/O Features
4.1.3. PLL and Clock Planning x
4.1.3.1. Clock and PLL Selection 4.1.3.2. PLL Feature Guidelines 4.1.3.3. Clock Feedback Mode 4.1.3.4. Clock Outputs 4.1.3.5. Clock Control Features
4.1.6. Sensors x
4.1.6.1. Voltage sensor 4.1.6.2. Temperature Sensor and Temperature Diode
4.3. Design entry for HPS x
4.3.1. Simics® Simulator 4.3.2. HPS IP Instantiation in Quartus® Prime 4.3.3. Embedded Software
5. Board and Software consideration x
5.1. Early Board Planning 5.2. Boundary Scan for FPGA and HPS 5.3. Pin Connection Considerations for Board Design 5.4. Planning for Device Configuration 5.5. Board and Software Consideration Revision History
5.1. Early Board Planning x
5.1.1. Power - Fixed Voltage 5.1.2. Thermal Management and Design
5.1.1. Power - Fixed Voltage x
5.1.1.1. Power and Thermal Calculator 5.1.1.2. Power-Up and Power-Down Sequencing
5.3. Pin Connection Considerations for Board Design x
5.3.1. Board-Related Quartus® Prime Settings 5.3.2. Signal Integrity Considerations 5.3.3. Board-Level Simulation and Advanced I/O Timing Analysis
5.3.1. Board-Related Quartus® Prime Settings x
5.3.1.1. Unused Pins
5.3.2. Signal Integrity Considerations x
5.3.2.1. High-Speed Board Design 5.3.2.2. Simultaneous Switching Noise 5.3.2.3. I/O Termination
5.4. Planning for Device Configuration x
5.4.1. Device Power Cycling and Reconfiguration 5.4.2. Configuration Scheme Selection 5.4.3. Configuration Features 5.4.4. Quartus® Prime Configuration Settings 5.4.5. Configuration Pin Connections 5.4.6. JTAG Pins 5.4.7. MSEL Configuration Mode Pins
5.4.2. Configuration Scheme Selection x
5.4.2.1. Serial Configuration Devices 5.4.2.2. Intel® FPGA Download Cable II
5.4.4. Quartus® Prime Configuration Settings x
5.4.4.1. Optional Configuration Pins 5.4.4.2. Dual Purpose Configuration Pins
5.4.5. Configuration Pin Connections x
5.4.5.1. Configuration Pin Voltage Level 5.4.5.2. Clock Trace Signal Integrity
5.4.6. JTAG Pins x
5.4.6.1. JTAG Pin Connections 5.4.6.2. JTAG Signal Buffering 5.4.6.3. Download Cable Operating Voltage
6. Design Implementation, Analysis, Optimization and Verification x
6.1. Synthesis Tool 6.2. Device Resource Reports 6.3. Quartus® Prime Message 6.4. Design Assistant Design Rule Checking 6.5. Timing Constraints and Analysis 6.6. Area and Timing Optimization 6.7. Preserving Performance and Reducing Compilation Time 6.8. Designing with Hyperflex® 6.9. Simulation 6.10. Power Analysis 6.11. Design Implementation, Analysis, Optimization and Verification Revision History
6.5. Timing Constraints and Analysis x
6.5.1. Recommended Timing Optimization and Analysis Assignments 6.5.2. SDC-on-RTL and Post-Synthesis Static Timing Analysis
7. Debugging x
7.1. On-Chip Debug Overview 7.2. On-Chip Debugging Tools 7.3. Debugging Revision History
1. Introduction to Agilex™ 3 Device Design Guidelines
2. System Specification
3. Device Selection
4. Design Entry
5. Board and Software consideration
6. Design Implementation, Analysis, Optimization and Verification
7. Debugging

5.4.4.2. Dual Purpose Configuration Pins

Table 52.  Dual Purpose Configuration Pins Checklist
Number Done? Checklist Item
1   Plan the dual purpose pins that can function as configuration pins and user I/O pins.

In designs that do not include the HPS, the below configuration pins used for the Avalon® streaming interface ×16 configuration schemes can optionally be used as user I/O pins after the configuration has been completed. Enable the pins to function as dual purpose pins in the Quartus® Prime software prior to compilation, if desired.

  • AVST_CLK
  • AVST_VALID
  • AVST_DATA[15:0]
Table 53.  Dual-Purpose Pin Restrictions for Avalon® streaming interfacex16 Configuration Scheme
Dual-Purpose Pin Avalon® streaming interface x16
Not Used in User Mode Used in User Mode
AVST_CLK Setting: As input tri-stated Setting: Set as regular I/O

Pin Connection: Set as Input and assign ALL pins in pin assignment
AVST_VALID
AVST_DATA[15:0]
Note: All pins in the same group name must be assigned to the physical pin in pin assignment. For instance, if only 2 out of 16 pins from AVST_DATA[15:0] are used, then all 16 pins must be assigned to physical pins including the unused pins in the user design.
Note: All pins with pin assignments must be in known state, whether weak pull-up or weak pull-down.
Note: AVSTx16 configuration scheme cannot be used in designs that include the HPS.
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