AN 802: Intel® Stratix® 10 SoC Device Design Guidelines

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ID 683117
Date 12/14/2020
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Document Table of Contents
Document Table of Contents x
1. Introduction to the Intel® Stratix® 10 SoC Device Design Guidelines 2. Board Design Guidelines for Stratix 10 SoC FPGAs 3. Interfacing to the FPGA for Stratix 10 SoC FPGAs 4. System Considerations for Stratix 10 SoC FPGAs 5. Embedded Software Design Guidelines for Intel® Stratix® 10 SoC FPGAs 6. Recommended Resources for Stratix 10 SoC FPGAs
1. Introduction to the Intel® Stratix® 10 SoC Device Design Guidelines x
1.1. Introduction to the Stratix 10 SoC Device Design Guidelines Revision History
2. Board Design Guidelines for Stratix 10 SoC FPGAs x
2.1. Pin Connection Considerations for Board Design 2.2. HPS Clocking and Reset Design Considerations 2.3. Design Considerations for Connecting Device I/O to HPS Peripherals and Memory 2.4. Design Guidelines for HPS Interfaces 2.5. HPS EMIF Design Considerations 2.6. HPS Memory Debug 2.7. Boundary Scan for HPS 2.8. Embedded Software Debugging and Trace 2.9. Board Design Guidelines for Intel® Stratix® 10 SoC FPGAs Revision History
2.1. Pin Connection Considerations for Board Design x
2.1.1. Board-Related Intel® Quartus® Prime Settings
2.1.1. Board-Related Intel® Quartus® Prime Settings x
2.1.1.1. Unused Pins Connection Guidelines for Unused HPS Block
2.2. HPS Clocking and Reset Design Considerations x
2.2.1. HPS Clock Planning 2.2.2. Early Pin Planning and I/O Assignment Analysis 2.2.3. Pin Features and Connections for HPS Clocks, Reset and PoR 2.2.4. Direct to Factory Pin Support for Remote System Update (RSU) Feature 2.2.5. Internal Clocks 2.2.6. HPS Peripheral Reset Management
2.3. Design Considerations for Connecting Device I/O to HPS Peripherals and Memory x
2.3.1. HPS Pin Multiplexing Design Considerations 2.3.2. HPS I/O Settings: Constraints and Drive Strengths
2.4. Design Guidelines for HPS Interfaces x
2.4.1. HPS EMAC PHY Interfaces 2.4.2. USB Interface Design Guidelines 2.4.3. SD/MMC and eMMC Card Interface Design Guidelines 2.4.4. Design Guidelines for Flash Interfaces 2.4.5. UART Interface Design Guidelines 2.4.6. I2C Interface Design Guidelines
2.4.1. HPS EMAC PHY Interfaces x
2.4.1.1. PHY Interfaces 2.4.1.2. PHY Interfaces Connected Through FPGA I/O 2.4.1.3. MDIO 2.4.1.4. Common PHY Interface Design Considerations
2.4.1.1. PHY Interfaces x
2.4.1.1.1. RMII 2.4.1.1.2. RGMII
2.4.1.2. PHY Interfaces Connected Through FPGA I/O x
2.4.1.2.1. GMII/MII 2.4.1.2.2. Adapting to RGMII 2.4.1.2.3. Adapting to RMII 2.4.1.2.4. Adapting to SGMII
2.4.1.4. Common PHY Interface Design Considerations x
2.4.1.4.1. Signal Integrity
2.4.4. Design Guidelines for Flash Interfaces x
2.4.4.1. NAND Flash Interface Design Guidelines
2.5. HPS EMIF Design Considerations x
2.5.1. Considerations for Connecting HPS to SDRAM 2.5.2. HPS SDRAM I/O Locations
3. Interfacing to the FPGA for Stratix 10 SoC FPGAs x
3.1. Overview of HPS Memory-Mapped Interfaces 3.2. Recommended System Topologies 3.3. Recommended Starting Point for HPS-to-FPGA Interface Designs 3.4. Timing Closure for FPGA Accelerators 3.5. Information on How to Configure and Use the Bridges 3.6. Interfacing to the FPGA for Intel® Stratix® 10 SoC FPGAs Revision History
3.1. Overview of HPS Memory-Mapped Interfaces x
3.1.1. HPS-to-FPGA Bridge 3.1.2. Lightweight HPS-to-FPGA Bridge 3.1.3. FPGA-to-HPS Bridge 3.1.4. FPGA-to-SDRAM Ports 3.1.5. Interface Bandwidths
3.2. Recommended System Topologies x
3.2.1. HPS Accesses to FPGA Fabric 3.2.2. MPU Sharing Data with FPGA 3.2.3. Examples of Cacheable and Non-Cacheable Data Accesses From the FPGA
3.2.3. Examples of Cacheable and Non-Cacheable Data Accesses From the FPGA x
3.2.3.1. Example 1: FPGA Reading Data from HPS SDRAM Directly 3.2.3.2. Example 2: FPGA Writing Data into HPS SDRAM Directly 3.2.3.3. Example 3: FPGA Reading Cache Coherent Data from HPS 3.2.3.4. Example 4: FPGA Writing Cache Coherent Data to HPS
4. System Considerations for Stratix 10 SoC FPGAs x
4.1. Timing Considerations 4.2. Maximizing Performance 4.3. System Level Cache Coherency 4.4. System Considerations for Stratix 10 SoC FPGAs Revision History
4.1. Timing Considerations x
4.1.1. Timing Closure for FPGA Accelerators 4.1.2. USB Interface Design Guidelines
4.1.1. Timing Closure for FPGA Accelerators x
4.1.1.1. HPS First and FPGA First Boot Considerations
5. Embedded Software Design Guidelines for Intel® Stratix® 10 SoC FPGAs x
5.1. Overview 5.2. Assembling the Components of Your Software Development Platform 5.3. Golden Hardware Reference Design (GHRD) 5.4. Selecting an Operating System for Your Application 5.5. Assembling Your Software Development Platform for Linux* 5.6. Assembling your Software Development Platform for a Bare-Metal Application 5.7. Assembling your Software Development Platform for Partner OS or RTOS 5.8. Choosing the Bootloader Software 5.9. Selecting Software Tools for Development, Debug and Trace 5.10. Boot And Configuration Considerations 5.11. System Reset Considerations 5.12. Flash Considerations 5.13. Embedded Software Debugging and Trace 5.14. Embedded Software Design Guidelines for Intel® Stratix® 10 SoC FPGAs Revision History
5.4. Selecting an Operating System for Your Application x
5.4.1. Using Linux* or RTOS 5.4.2. Developing a Bare-Metal Application 5.4.3. Using the Bootloader as a Bare-Metal Framework 5.4.4. Using Symmetrical vs. Asymmetrical Multiprocessing (SMP vs. AMP) Modes
5.5. Assembling Your Software Development Platform for Linux* x
5.5.1. Golden System Reference Design (GSRD) for Linux* 5.5.2. Source Code Management Considerations
5.9. Selecting Software Tools for Development, Debug and Trace x
5.9.1. Selecting Software Build Tools 5.9.2. Selecting Software Debug Tools 5.9.3. Selecting Software Trace Tools
5.10. Boot And Configuration Considerations x
5.10.1. Configuration Sources 5.10.2. Configuration Flash 5.10.3. Configuration Clock 5.10.4. Selecting HPS Boot Options 5.10.5. HPS Boot Sources 5.10.6. Remote System Update (RSU)
5.12. Flash Considerations x
5.12.1. Flash Programming Method 5.12.2. Using a Single flash for Both FPGA Configuration and HPS Mass Storage
6. Recommended Resources for Stratix 10 SoC FPGAs x
6.1. Device Documentation 6.2. Tools and Software Web Pages 6.3. Recommended Resources for Intel® Stratix® 10 SoC FPGAs Revision History
1. Introduction to the Intel® Stratix® 10 SoC Device Design Guidelines
2. Board Design Guidelines for Stratix 10 SoC FPGAs
3. Interfacing to the FPGA for Stratix 10 SoC FPGAs
4. System Considerations for Stratix 10 SoC FPGAs
5. Embedded Software Design Guidelines for Intel® Stratix® 10 SoC FPGAs
6. Recommended Resources for Stratix 10 SoC FPGAs

2.1.1.1. Unused Pins

Table 3.  Unused Pins Checklist
Number Done? Checklist Item
1   Specify the reserved state for unused I/O pins.
2   Carefully check the pin connections in the Intel® Quartus® Prime software-generated .pin file. Do not connect RESERVED pins.

You can specify the state of unused pins in the Intel® Quartus® Prime software to allow flexibility in the board design by choosing one of the five allowable states for Reserve all unused pins on the Unused Pins category in the Device and Pin Options dialog box:

  • As inputs tri-stated
  • As output driving ground
  • As outputs driving an unspecified signal
  • As input tri-stated with bus-hold circuitry
  • As input tri-stated with weak pull-up

The common setting is to set unused pins As inputs tri-stated with weak pull-up. To improve signal integrity, set the unused pins to As output driving ground. Doing this reduces inductance by creating a shorter return path and reduces noise on the neighboring I/Os. This approach should not be used if this results in many via paths causing congestion for signals under the device.

To reduce power dissipation, set clock pins and other unused I/O pins As inputs tri-stated and tie them to ground.

Connection Guidelines for Unused HPS Block

If you are not using the HPS block in the Intel® Agilex™ SoC device, you can follow the guidelines below for HPS specific pins:

Table 4.  HPS Supply Pins
Pin Function If HPS is unused, connect to:

VCCL_HPS

VCCIO_HPS

VCCPLL_HPS

VCCPLLDIG_HPS

If you do not intend to utilize the HPS in the Intel Stratix 10 SoC device, you must still provide power to the HPS power supplies. Do not leave the HPS power supplies floating or connect them to GND.

For more information, refer to HPS Supply Pins section in the Intel Stratix 10 Device Family Pin Connection Guidelines .

48 HPS Dedicated IO No connect (NC)
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