External Memory Interfaces Intel® Agilex™ 7 F-Series and I-Series FPGA IP User Guide

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ID 683216
Date 4/03/2023
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Document Table of Contents
Document Table of Contents x
1. About the External Memory Interfaces Intel® Agilex™ 7 F-Series and I-Series FPGA IP 2. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Introduction 3. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Product Architecture 4. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – End-User Signals 5. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Simulating Memory IP 6. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – DDR4 Support 7. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – QDR-IV Support 8. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Timing Closure 9. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – I/O Timing Closure 10. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Controller Optimization 11. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Debugging 12. External Memory Interfaces Intel® Agilex™ 7 F-Series and I-Series FPGA IP User Guide Archives 13. Document Revision History for External Memory Interfaces Intel® Agilex™ 7 F-Series and I-Series FPGA IP User Guide
1. About the External Memory Interfaces Intel® Agilex™ 7 F-Series and I-Series FPGA IP x
1.1. Release Information
2. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Introduction x
2.1. Intel® Agilex™ 7 F-Series and I-Series EMIF IP Protocol and Feature Support 2.2. Intel® Agilex™ 7 F-Series and I-Series EMIF IP Design Flow 2.3. Intel® Agilex™ 7 F-Series and I-Series EMIF IP Design Checklist
3. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Product Architecture x
3.1. Intel® Agilex™ 7 F-Series and I-Series EMIF Architecture: Introduction 3.2. Intel® Agilex™ 7 F-Series and I-Series EMIF Sequencer 3.3. Intel® Agilex™ 7 F-Series and I-Series EMIF Calibration 3.4. Intel® Agilex™ 7 F-Series and I-Series EMIF Controller 3.5. User-requested Reset in Intel® Agilex™ 7 F-Series and I-Series EMIF IP 3.6. Intel® Agilex™ 7 F-Series and I-Series EMIF for Hard Processor Subsystem 3.7. Using a Custom Controller with the Hard PHY
3.1. Intel® Agilex™ 7 F-Series and I-Series EMIF Architecture: Introduction x
3.1.1. Intel® Agilex™ 7 F-Series and I-Series EMIF Architecture: I/O Subsystem 3.1.2. Intel® Agilex™ 7 F-Series and I-Series EMIF Architecture: I/O SSM 3.1.3. Intel® Agilex™ 7 F-Series and I-Series EMIF Architecture: I/O Bank 3.1.4. Intel® Agilex™ 7 F-Series and I-Series EMIF Architecture: I/O Lane 3.1.5. Intel® Agilex™ 7 F-Series and I-Series EMIF Architecture: Input DQS Clock Tree 3.1.6. Intel® Agilex™ 7 F-Series and I-Series EMIF Architecture: PHY Clock Tree 3.1.7. Intel® Agilex™ 7 F-Series and I-Series EMIF Architecture: PLL Reference Clock Networks 3.1.8. Intel® Agilex™ 7 F-Series and I-Series EMIF Architecture: Clock Phase Alignment
3.1.4. Intel® Agilex™ 7 F-Series and I-Series EMIF Architecture: I/O Lane x
3.1.4.1. Considerations for Designing DDR4 x72 Interface Together with an AVST x8/x16/x32 Configuration Scheme
3.3. Intel® Agilex™ 7 F-Series and I-Series EMIF Calibration x
3.3.1. Intel® Agilex™ 7 F-Series and I-Series Calibration Stages 3.3.2. Intel® Agilex™ 7 F-Series and I-Series Calibration Stages Descriptions 3.3.3. Intel® Agilex™ 7 F-Series and I-Series Calibration Flowchart 3.3.4. Intel® Agilex™ 7 F-Series and I-Series Calibration Algorithms
3.3.4. Intel® Agilex™ 7 F-Series and I-Series Calibration Algorithms x
3.3.4.1. Calibration Algorithms for DDR4 3.3.4.2. Calibration Algorithms for QDR-IV 3.3.4.3. Guidelines for Debugging Calibration Issues
3.3.4.1. Calibration Algorithms for DDR4 x
3.3.4.1.1. DDR4 Read Calibration 3.3.4.1.2. DDR4 Write Calibration
3.3.4.2. Calibration Algorithms for QDR-IV x
3.3.4.2.1. QDR-IV Read Calibration 3.3.4.2.2. QDR-IV Write Calibration
3.3.4.3. Guidelines for Debugging Calibration Issues x
3.3.4.3.1. Debugging Calibration Failure Using Information from the Calibration report 3.3.4.3.2. Debugging Address and Command Leveling Calibration Failure 3.3.4.3.3. Debugging Address and Command Deskew Failure 3.3.4.3.4. Debugging DQS Enable Failure 3.3.4.3.5. Debugging Read Deskew Calibration Failure 3.3.4.3.6. Debugging VREFIN Calibration Failure 3.3.4.3.7. Debugging LFIFO Calibration Failure 3.3.4.3.8. Debugging Write Leveling Failure 3.3.4.3.9. Debugging Write Deskew Calibration Failure 3.3.4.3.10. Debugging VREFOUT Calibration Failure
3.4. Intel® Agilex™ 7 F-Series and I-Series EMIF Controller x
3.4.1. Hard Memory Controller 3.4.2. Intel® Agilex™ 7 F-Series and I-Series Hard Memory Controller Rate Conversion Feature
3.4.1. Hard Memory Controller x
3.4.1.1. Hard Memory Controller Features 3.4.1.2. Hard Memory Controller Main Control Path 3.4.1.3. Data Buffer Controller
3.6. Intel® Agilex™ 7 F-Series and I-Series EMIF for Hard Processor Subsystem x
3.6.1. Restrictions on I/O Bank Usage for Intel® Agilex™ 7 F-Series and I-Series EMIF IP with HPS
4. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – End-User Signals x
4.1. Intel® Agilex™ 7 F-Series and I-Series EMIF IP Interface and Signal Descriptions 4.2. Intel® Agilex™ 7 F-Series and I-Series EMIF IP AFI Signals 4.3. Intel® Agilex™ 7 F-Series and I-Series EMIF IP AFI 4.0 Timing Diagrams 4.4. Intel® Agilex™ 7 F-Series and I-Series EMIF IP Memory Mapped Register (MMR) Tables
4.1. Intel® Agilex™ 7 F-Series and I-Series EMIF IP Interface and Signal Descriptions x
4.1.1. Intel® Agilex™ 7 EMIF IP Interfaces for DDR4 4.1.2. Intel® Agilex™ 7 EMIF IP Interfaces for QDR-IV
4.1.1. Intel® Agilex™ 7 EMIF IP Interfaces for DDR4 x
4.1.1.1. local_reset_req for DDR4 4.1.1.2. local_reset_status for DDR4 4.1.1.3. pll_ref_clk for DDR4 4.1.1.4. pll_locked for DDR4 4.1.1.5. ac_parity_err for DDR4 4.1.1.6. oct for DDR4 4.1.1.7. mem for DDR4 4.1.1.8. status for DDR4 4.1.1.9. afi_reset_n for DDR4 4.1.1.10. afi_clk for DDR4 4.1.1.11. afi_half_clk for DDR4 4.1.1.12. afi for DDR4 4.1.1.13. emif_usr_reset_n for DDR4 4.1.1.14. emif_usr_clk for DDR4 4.1.1.15. ctrl_amm for DDR4 4.1.1.16. ctrl_amm_aux for DDR4 4.1.1.17. ctrl_auto_precharge for DDR4 4.1.1.18. ctrl_user_priority for DDR4 4.1.1.19. ctrl_ecc_user_interrupt for DDR4 4.1.1.20. ctrl_ecc_readdataerror for DDR4 4.1.1.21. ctrl_ecc_status for DDR4 4.1.1.22. ctrl_mmr_slave for DDR4 4.1.1.23. hps_emif for DDR4 4.1.1.24. emif_calbus for DDR4 4.1.1.25. emif_calbus_clk for DDR4
4.1.2. Intel® Agilex™ 7 EMIF IP Interfaces for QDR-IV x
4.1.2.1. local_reset_req for QDR-IV 4.1.2.2. local_reset_status for QDR-IV 4.1.2.3. pll_ref_clk for QDR-IV 4.1.2.4. pll_locked for QDR-IV 4.1.2.5. oct for QDR-IV 4.1.2.6. mem for QDR-IV 4.1.2.7. status for QDR-IV 4.1.2.8. afi_reset_n for QDR-IV 4.1.2.9. afi_clk for QDR-IV 4.1.2.10. afi_half_clk for QDR-IV 4.1.2.11. afi for QDR-IV 4.1.2.12. emif_usr_reset_n for QDR-IV 4.1.2.13. emif_usr_clk for QDR-IV 4.1.2.14. ctrl_amm for QDR-IV 4.1.2.15. emif_calbus for QDR-IV 4.1.2.16. emif_calbus_clk for QDR-IV
4.2. Intel® Agilex™ 7 F-Series and I-Series EMIF IP AFI Signals x
4.2.1. AFI Clock and Reset Signals 4.2.2. AFI Address and Command Signals 4.2.3. AFI Write Data Signals 4.2.4. AFI Read Data Signals 4.2.5. AFI Calibration Status Signals 4.2.6. AFI Tracking Management Signals 4.2.7. AFI Shadow Register Management Signals
4.3. Intel® Agilex™ 7 F-Series and I-Series EMIF IP AFI 4.0 Timing Diagrams x
4.3.1. AFI Address and Command Timing Diagrams 4.3.2. AFI Write Sequence Timing Diagrams 4.3.3. AFI Read Sequence Timing Diagrams 4.3.4. AFI Calibration Status Timing Diagram
4.4. Intel® Agilex™ 7 F-Series and I-Series EMIF IP Memory Mapped Register (MMR) Tables x
4.4.1. ctrlcfg0 4.4.2. ctrlcfg1 4.4.3. dramtiming0 4.4.4. sbcfg1 4.4.5. caltiming0 4.4.6. caltiming1 4.4.7. caltiming2 4.4.8. caltiming3 4.4.9. caltiming4 4.4.10. caltiming9 4.4.11. dramaddrw 4.4.12. sideband0 4.4.13. sideband1 4.4.14. sideband4 4.4.15. sideband6 4.4.16. sideband7 4.4.17. sideband9 4.4.18. sideband11 4.4.19. sideband12 4.4.20. sideband13 4.4.21. sideband14 4.4.22. dramsts 4.4.23. niosreserve0 4.4.24. niosreserve1 4.4.25. sideband16 4.4.26. ecc3: ECC Error and Interrupt Configuration 4.4.27. ecc4: Status and Error Information 4.4.28. ecc5: Address of Most Recent SBE/DBE 4.4.29. ecc6: Address of Most Recent Correction Command Dropped 4.4.30. ecc7: Extension for Address of Most Recent SBE/DBE 4.4.31. ecc8: Extension for Address of Most Recent Correction Command Dropped
5. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Simulating Memory IP x
5.1. Simulation Options 5.2. Simulation Walkthrough 5.3. Simulating the Design Example with Mentor Graphics* AXI4 Master BFM ( Intel® FPGA Edition)
5.2. Simulation Walkthrough x
5.2.1. Calibration Modes 5.2.2. Simulation Scripts 5.2.3. Functional Simulation with Verilog HDL 5.2.4. Functional Simulation with VHDL 5.2.5. Simulating the Design Example
5.3. Simulating the Design Example with Mentor Graphics* AXI4 Master BFM ( Intel® FPGA Edition) x
5.3.1. Overview of Steps 5.3.2. Generating the EMIF Design Example 5.3.3. Editing the Simulation Design Example with the Platform Designer 5.3.4. Editing the ed_sim.v File 5.3.5. Obtaining the master_test_program.sv File 5.3.6. Running the Simulation
6. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – DDR4 Support x
6.1. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Parameter Descriptions 6.2. Intel® Agilex™ 7 F-Series and I-Series External Memory Interfaces Intel® Calibration IP Parameters 6.3. Register Map IP-XACT Support for Intel® Agilex™ 7 F-Series and I-Series EMIF DDR4 IP 6.4. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Pin and Resource Planning 6.5. DDR4 Board Design Guidelines
6.1. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Parameter Descriptions x
6.1.1. Intel® Agilex™ 7 F-Series and I-Series EMIF IP DDR4 Parameters: General 6.1.2. Intel® Agilex™ 7 F-Series and I-Series EMIF IP DDR4 Parameters: Memory 6.1.3. Intel® Agilex™ 7 F-Series and I-Series EMIF IP DDR4 Parameters: Mem I/O 6.1.4. Intel® Agilex™ 7 F-Series and I-Series EMIF IP DDR4 Parameters: FPGA I/O 6.1.5. Intel® Agilex™ 7 F-Series and I-Series EMIF IP DDR4 Parameters: Mem Timing 6.1.6. Intel® Agilex™ 7 F-Series and I-Series EMIF IP DDR4 Parameters: Controller 6.1.7. Intel® Agilex™ 7 F-Series and I-Series EMIF IP DDR4 Parameters: Diagnostics 6.1.8. Intel® Agilex™ 7 F-Series and I-Series EMIF IP DDR4 Parameters: Example Designs
6.4. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Pin and Resource Planning x
6.4.1. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Interface Pins 6.4.2. Intel® Agilex™ 7 FPGA EMIF IP Resources 6.4.3. Pin Guidelines for Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP
6.4.1. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Interface Pins x
6.4.1.1. Estimating Pin Requirements 6.4.1.2. DIMM Options 6.4.1.3. Maximum Number of Interfaces
6.4.2. Intel® Agilex™ 7 FPGA EMIF IP Resources x
6.4.2.1. OCT 6.4.2.2. PLL
6.4.3. Pin Guidelines for Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP x
6.4.3.1. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Banks 6.4.3.2. General Guidelines 6.4.3.3. x4 DIMM Implementation 6.4.3.4. Specific Pin Connection Requirements 6.4.3.5. Command and Address Signals 6.4.3.6. Clock Signals 6.4.3.7. Data, Data Strobes, DM/DBI, and Optional ECC Signals
6.5. DDR4 Board Design Guidelines x
6.5.1. Terminations for DDR4 with Intel® Agilex™ 7 F-Series and I-Series Devices 6.5.2. Clamshell Topology 6.5.3. General Layout Routing Guidelines 6.5.4. Reference Stackup 6.5.5. Intel® Agilex™ 7 F-Series and I-Series EMIF-Specific Routing Guidelines for Various DDR4 Topologies 6.5.6. DDR4 Routing Guidelines: Discrete (Component) Topologies 6.5.7. Intel® Agilex™ 7 F-Series and I-Series EMIF Pin Swapping Guidelines
6.5.1. Terminations for DDR4 with Intel® Agilex™ 7 F-Series and I-Series Devices x
6.5.1.1. Dynamic On-Chip Termination (OCT) 6.5.1.2. Dynamic On-Die Termination (ODT) in DDR4 6.5.1.3. Choosing Terminations on Intel® Agilex™ 7 F-Series and I-Series FPGA Devices 6.5.1.4. On-Chip Termination Recommendations for Intel® Agilex™ 7 F-Series and I-Series FPGA Devices
6.5.5. Intel® Agilex™ 7 F-Series and I-Series EMIF-Specific Routing Guidelines for Various DDR4 Topologies x
6.5.5.1. One DIMM per Channel (1DPC) for UDIMM, RDIMM, LRDIMM, and SODIMM DDR4 Topologies 6.5.5.2. Two DIMMs per Channel (2DPC) for UDIMM, RDIMM, and LRDIMM DDR4 Topologies 6.5.5.3. Two DIMMs per Channel (2DPC) for SODIMM Topology 6.5.5.4. Skew Matching Guidelines for DIMM Configurations 6.5.5.5. Power Delivery Recommendations for the Memory / DIMM Side
6.5.6. DDR4 Routing Guidelines: Discrete (Component) Topologies x
6.5.6.1. Single Rank x 8 Discrete (Component) Topology 6.5.6.2. Single Rank x 16 Discrete (Component) Topology 6.5.6.3. ADDR/CMD Reference Voltage/RESET Signal Routing Guidelines for Single Rank x 8 and R Rank x 16 Discrete (Component) Topologies 6.5.6.4. Skew Matching Guidelines for DDR4 Discrete Configurations 6.5.6.5. Power Delivery Recommendations for DDR4 Discrete Configurations
7. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – QDR-IV Support x
7.1. Intel® Agilex™ 7 FPGA EMIF IP Parameter Descriptions 7.2. Intel® Agilex™ 7 F-Series and I-Series External Memory Interfaces Intel® Calibration IP Parameters 7.3. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Pin and Resource Planning 7.4. QDR-IV Board Design Guidelines
7.1. Intel® Agilex™ 7 FPGA EMIF IP Parameter Descriptions x
7.1.1. Intel® Agilex™ 7 F-Series and I-Series EMIF IP QDR-IV Parameters: General 7.1.2. Intel® Agilex™ 7 F-Series and I-Series EMIF IP QDR-IV Parameters: Memory 7.1.3. Intel® Agilex™ 7 F-Series and I-Series EMIF IP QDR-IV Parameters: FPGA I/O 7.1.4. Intel® Agilex™ 7 F-Series and I-Series EMIF IP QDR-IV Parameters: Mem Timing 7.1.5. Intel® Agilex™ 7 F-Series and I-Series EMIF IP QDR-IV Parameters: Controller 7.1.6. Intel® Agilex™ 7 F-Series and I-Series EMIF IP QDR-IV Parameters: Diagnostics 7.1.7. Intel® Agilex™ 7 F-Series and I-Series EMIF IP QDR-IV Parameters: Example Designs
7.3. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Pin and Resource Planning x
7.3.1. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Interface Pins 7.3.2. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Resources 7.3.3. Pin Guidelines for Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP
7.3.1. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Interface Pins x
7.3.1.1. Estimating Pin Requirements 7.3.1.2. Maximum Number of Interfaces
7.3.2. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Resources x
7.3.2.1. OCT 7.3.2.2. PLL
7.3.3. Pin Guidelines for Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP x
7.3.3.1. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP Banks 7.3.3.2. General Guidelines 7.3.3.3. QDR IV SRAM Commands and Addresses, AP, and AINV Signals 7.3.3.4. QDR IV SRAM Clock Signals 7.3.3.5. QDR IV SRAM Data, DINV, and QVLD Signals 7.3.3.6. Specific Pin Connection Requirements 7.3.3.7. Resource Sharing Guidelines (Multiple Interfaces)
7.4. QDR-IV Board Design Guidelines x
7.4.1. General Layout Routing Guidelines 7.4.2. Reference Stackup 7.4.3. Routing Guidelines for QDR-IV Topology 7.4.4. Intel® Agilex™ 7 EMIF Design Guideline Summary
7.4.3. Routing Guidelines for QDR-IV Topology x
7.4.3.1. QDR-IV Single Device Memory Topology 7.4.3.2. Skew Matching Guidelines for QDR-IV Configurations 7.4.3.3. Power Delivery Recommendation for QDR-IV Configurations
8. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Timing Closure x
8.1. Timing Closure 8.2. Optimizing Timing
8.1. Timing Closure x
8.1.1. Timing Analysis
8.1.1. Timing Analysis x
8.1.1.1. PHY or Core
9. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – I/O Timing Closure x
9.1. I/O Timing Closure Overview 9.2. Collateral Generated with Your EMIF IP 9.3. SPICE Decks 9.4. File Organization 9.5. Top-level Parameterization File 9.6. IP-Supplied Parameters that You Might Need to Override 9.7. Understanding the *_ip_parameters.dat File and Making a Mask Polygon 9.8. Multi-Rank Topology 9.9. Pin Parasitics 9.10. Mask Evaluation
9.3. SPICE Decks x
9.3.1. Address/Command Simulation Deck 9.3.2. FPGA Write Operation Simulation Deck 9.3.3. FPGA Read Operation Simulation Deck
10. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Controller Optimization x
10.1. Interface Standard 10.2. Bank Management Efficiency 10.3. Data Transfer 10.4. Improving Controller Efficiency
10.4. Improving Controller Efficiency x
10.4.1. Auto-Precharge Commands 10.4.2. Additive Latency 10.4.3. Bank Interleaving 10.4.4. Additive Latency and Bank Interleaving 10.4.5. User-Controlled Refresh 10.4.6. Frequency of Operation 10.4.7. Series of Reads or Writes 10.4.8. Data Reordering 10.4.9. Starvation Control 10.4.10. Command Reordering 10.4.11. Bandwidth 10.4.12. Enable Command Priority Control 10.4.13. Controller Pre-pay and Post-pay Refresh (DDR4 Only)
10.4.1. Auto-Precharge Commands x
10.4.1.1. Using Auto-precharge to Achieve Highest Memory Bandwidth for DDR4 Interfaces
11. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Debugging x
11.1. Interface Configuration Performance Issues 11.2. Functional Issue Evaluation 11.3. Timing Issue Characteristics 11.4. Verifying Memory IP Using the Signal Tap Logic Analyzer 11.5. Hardware Debugging Guidelines 11.6. Categorizing Hardware Issues 11.7. Debugging with the External Memory Interface Debug Toolkit 11.8. Using the Default Traffic Generator 11.9. Using the Configurable Traffic Generator (TG2) 11.10. EMIF On-Chip Debug Port 11.11. Efficiency Monitor
11.1. Interface Configuration Performance Issues x
11.1.1. Interface Configuration Bottleneck and Efficiency Issues
11.2. Functional Issue Evaluation x
11.2.1. Intel® IP Memory Model 11.2.2. Vendor Memory Model 11.2.3. Transcript Window Messages 11.2.4. Modifying the Example Driver to Replicate the Failure
11.3. Timing Issue Characteristics x
11.3.1. Evaluating FPGA Timing Issues 11.3.2. Evaluating External Memory Interface Timing Issues
11.4. Verifying Memory IP Using the Signal Tap Logic Analyzer x
11.4.1. Signals to Monitor with the Signal Tap Logic Analyzer
11.5. Hardware Debugging Guidelines x
11.5.1. Create a Simplified Design that Demonstrates the Same Issue 11.5.2. Measure Power Distribution Network 11.5.3. Measure Signal Integrity and Setup and Hold Margin 11.5.4. Vary Voltage 11.5.5. Operate at a Lower Speed 11.5.6. Determine Whether the Issue Exists in Previous Versions of Software 11.5.7. Determine Whether the Issue Exists in the Current Version of Software 11.5.8. Try A Different PCB 11.5.9. Try Other Configurations 11.5.10. Debugging Checklist
11.6. Categorizing Hardware Issues x
11.6.1. Signal Integrity Issues 11.6.2. Hardware and Calibration Issues
11.6.1. Signal Integrity Issues x
11.6.1.1. Characteristics of Signal Integrity Issues 11.6.1.2. Evaluating Signal Integrity Issues
11.6.1.2. Evaluating Signal Integrity Issues x
11.6.1.2.1. Skew 11.6.1.2.2. Crosstalk 11.6.1.2.3. Power System 11.6.1.2.4. Clock Signals 11.6.1.2.5. Address and Command Signals 11.6.1.2.6. Read Data Valid Window and Eye Diagram 11.6.1.2.7. Write Data Valid Window and Eye Diagram 11.6.1.2.8. OCT and ODT Usage
11.6.2. Hardware and Calibration Issues x
11.6.2.1. Postamble Timing Issues and Margin 11.6.2.2. Intermittent Issue Evaluation 11.6.2.3. Memory Timing Parameter Evaluation 11.6.2.4. Verify that the Board Has the Correct Memory Component or DIMM Installed
11.7. Debugging with the External Memory Interface Debug Toolkit x
11.7.1. Prerequisites for Using the EMIF Debug Toolkit 11.7.2. Configuring a Design to Use the Toolkit 11.7.3. Launching the EMIF Debug Toolkit 11.7.4. Using the EMIF Debug Toolkit 11.7.5. Exporting Tables 11.7.6. Viewing Reports Graphically in the Eye Viewer
11.7.2. Configuring a Design to Use the Toolkit x
11.7.2.1. Generating a Design Example with the Debug Toolkit 11.7.2.2. Creating a Design Example with Multiple External Memory Interfaces 11.7.2.3. Enabling the EMIF Toolkit in an Existing Design
11.7.4. Using the EMIF Debug Toolkit x
11.7.4.1. Memory Configuration Tab 11.7.4.2. Calibration Tab 11.7.4.3. Guidelines for Debugging Calibration Issues 11.7.4.4. Calibration Report Tab 11.7.4.5. Calibrate Termination Tab 11.7.4.6. Vref Margining Tab 11.7.4.7. Driver Margining Tab 11.7.4.8. ISSPs Tab 11.7.4.9. Pin Delay Settings Tab
11.7.4.2. Calibration Tab x
11.7.4.2.1. Rerunning Calibration 11.7.4.2.2. Rerunning the Traffic Generator
11.7.4.3. Guidelines for Debugging Calibration Issues x
11.7.4.3.1. Debugging Calibration Failure Using Information from the Calibration report 11.7.4.3.2. Debugging Address and Command Leveling Calibration Failure 11.7.4.3.3. Debugging Address and Command Deskew Failure 11.7.4.3.4. Debugging DQS Enable Failure 11.7.4.3.5. Debugging Read Deskew Calibration Failure 11.7.4.3.6. Debugging VREFIN Calibration Failure 11.7.4.3.7. Debugging LFIFO Calibration Failure 11.7.4.3.8. Debugging Write Leveling Failure 11.7.4.3.9. Debugging Write Deskew Calibration Failure 11.7.4.3.10. Debugging VREFOUT Calibration Failure
11.8. Using the Default Traffic Generator x
11.8.1. Reading the Default Traffic Generator Status 11.8.2. Running Infinite Traffic using the Default Traffic Generator 11.8.3. Changing the Reset Trigger of the Default Traffic Generator 11.8.4. Observing Generated Traffic with Signal Tap
11.9. Using the Configurable Traffic Generator (TG2) x
11.9.1. Enabling the Traffic Generator in a Design Example 11.9.2. Traffic Generator Block Description 11.9.3. Default Traffic Pattern 11.9.4. Configuration and Status Registers 11.9.5. User Pattern 11.9.6. Traffic Generator Status 11.9.7. Starting Traffic with the Traffic Generator 11.9.8. Traffic Generator Configuration User Interface
11.9.5. User Pattern x
11.9.5.1. Test Duration / Instruction pattern 11.9.5.2. Address Pattern 11.9.5.3. Data Pattern and Byte Enable
11.9.5.2. Address Pattern x
11.9.5.2.1. Address Generator Modes 11.9.5.2.2. Address Generator MSB Indices 11.9.5.2.3. Address Generator Effective Width 11.9.5.2.4. Address Generator Relative Frequencies 11.9.5.2.5. Address Pattern Examples - Basic Mode 11.9.5.2.6. Address Pattern Examples - Advanced Mode
11.9.8. Traffic Generator Configuration User Interface x
11.9.8.1. Connecting the Traffic Generator 11.9.8.2. Claiming/Releasing the TG Config Interface 11.9.8.3. Configuring the Traffic Generator 11.9.8.4. Traffic Generator Preset Selection 11.9.8.5. Traffic Generator Status Report 11.9.8.6. Examples of Configuring the TG2 Traffic Generator
11.10. EMIF On-Chip Debug Port x
11.10.1. Enabling the On-Chip Debug Port 11.10.2. I/O SSM calbus Bridge Data Structures and Usage 11.10.3. I/O SSM User-RAM Data Structures and Usage 11.10.4. Debug Interface Structure 11.10.5. Example: Reading Calibration Results and Margins with the On-Chip Debug Port
11.10.3. I/O SSM User-RAM Data Structures and Usage x
11.10.3.1. Parameter Tables 11.10.3.2. Parameter Table Enums
11.10.3.1. Parameter Tables x
11.10.3.1.1. Global Parameter Table 11.10.3.1.2. Per-interface Parameter Table Structure 11.10.3.1.3. Parameter Table Arrays
11.10.4. Debug Interface Structure x
11.10.4.1. Debug Data Structures 11.10.4.2. Debug Enums
11.11. Efficiency Monitor x
11.11.1. Enabling the Efficiency Monitor in a Design Example 11.11.2. Efficiency Monitor Block Descriptions 11.11.3. Control and Status Registers 11.11.4. Opening the Efficiency Monitor Toolkit
1. About the External Memory Interfaces Intel® Agilex™ 7 F-Series and I-Series FPGA IP
2. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Introduction
3. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Product Architecture
4. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – End-User Signals
5. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Simulating Memory IP
6. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – DDR4 Support
7. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – QDR-IV Support
8. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Timing Closure
9. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – I/O Timing Closure
10. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Controller Optimization
11. Intel® Agilex™ 7 F-Series and I-Series FPGA EMIF IP – Debugging
12. External Memory Interfaces Intel® Agilex™ 7 F-Series and I-Series FPGA IP User Guide Archives
13. Document Revision History for External Memory Interfaces Intel® Agilex™ 7 F-Series and I-Series FPGA IP User Guide

11.10.3.1.2. Per-interface Parameter Table Structure

The Per-Interface parameter table’s base address is equal to: (user-ram base address) + (interface parameter table offset, read from gpt_INTERFACE_PAR_PTRS array).
Table 173.  Per-interface Parameters
Address Data Type Bit Position Field Name Description
base address for per-interface parameter table (per_interface_base_address) = 0x0500_0000 + per-interface offset alt_u16  Bit[15:0]  pt_IP_VER

IP ACDS version encoded as a 16-bit value, where:

  • Bit 15 is reserved.
  • Bits 14-10 encode the major release number.
  • Bits 9-6 encode the minor release number.
  • Bits 5-3 encode the service pack number.
  • Bits 2-0 encode whether this is a special variant.
alt_u16 Bit[31:16] pt_INTERFACE_PAR_VER  Version of this parameter table ( Nios® checks compatibility).
per_interface_base_address + 0x04  alt_u16 Bit[15:0] pt_DEBUG_DATA_PTR  Debug_data_struct offset from the starting address of the user-ram.
alt_u16 Bit[31:16] pt_UNUSED Unused.
per_interface_base_address + 0x08 alt_u8 Bit[7:0]  pt_MEMORY_TYPE  Memory type, defined by ENUM_MEM_TYPE.
alt_u8 Bit[15:8] pt_DIMM_TYPE  DIMM type, defined by ENUM_DIMM_TYPE.
alt_u8 Bit[31:16] pt_RESERVED  Reserved entry.
per_interface_base_address + 0x0C  alt_u32 Bit[31:0]   pt_AFI_CLK_FREQ_KHZ  AFI clock frequency in KHz.
per_interface_base_address + 0x10  alt_u8 Bit[7:0]  pt_BURST_LEN  Burst length.
alt_u8 Bit[15:8] pt_READ_LATENCY 

Effective Read Latency. The value is a fixed-point number in 7.1 format: bit [6:0] is the integer part and bit 7 is the fractional part.

For example:

  • value 0x2 means RL=2
  • value 0x82 means RL=2.5 (useful for QDR memory)

The value should be equal to (CL + AL + PL), where:

CL is CAS Latency, AL is Additive Latency (for the memories supporting it; 0 otherwise), and PL is Parity Latency (for memories supporting it if parity feature is enabled; 0 otherwise).

alt_u8 Bit[23:16] pt_WRITE_LATENCY  Effective Write Latency. Equals (WL + AL + PL), where:

WL is Write Latency, and AL and PL are the same as those used in READ_LATENCY above.

alt_u8 Bit[31:24]  pt_NUM_RANKS  Number of electrical loads of DQ/DQS.
per_interface_base_address + 0x14  alt_u8   Bit[7:0]  pt_NUM_DIMMS  Number of DIMM slots.
alt_u8   Bit[15:8]  pt_NUM_DQS_WR  Number of write DQS pins.
alt_u8   Bit[23:16] pt_NUM_DQS_RD  Number of read DQS pins.
alt_u8   Bit[31:24] pt_NUM_DQ  Number of DQ pins.
per_interface_base_address + 0x18  alt_u8   Bit[7:0]  pt_NUM_DM  Number of DM pins (or DM/DBI pins for DDR4).
alt_u8   Bit[15:8] pt_ADDR_WIDTH  Number of address pins.
alt_u8   Bit[23:16] pt_BANK_WIDTH  Bank Address width; equals log2(number-of-banks).
alt_u8   Bit[31:24] pt_CS_WIDTH  CS width; in most cases equals NUM_RANKS.
per_interface_base_address + 0x1C  alt_u8   Bit[7:0]  pt_CKE_WIDTH  CKE width; in most cases equals CS_WIDTH.
alt_u8   Bit[15:8] pt_ODT_WIDTH  ODT width; in most cases equals CS_WIDTH.
alt_u8   Bit[23:16]  pt_C_WIDTH  Chip ID width for DDR4.
alt_u8   Bit[31:24]  pt_BANK_GROUP_WIDTH  Bank group width for DDR4.
per_interface_base_address + 0x20  alt_u8  Bit[7:0]  pt_ADDR_MIRROR Address mirroring configuration; one bit enable per rank enables.
alt_u8  Bit[15:8]  pt_CK_WIDTH  Number of pairs of CK/CK_N; in most cases equals to CS_WIDTH.
alt_u8  Bit[23:16]  pt_CAL_DATA_SIZE  Size of the pt_CAL_DATA_PTR array (in bytes).
alt_u8  Bit[31:24]  pt_NUM_LRDIMM_CFG  (LRDIMM only) Number of the triplets of code words for LRDIMM. On non-LRDIMM configuration this entry should be set to 0.
per_interface_base_address + 0x24  alt_u8  Bit[7:0]  pt_NUM_AC_ROM_ENUMS  Number of AC ROM enums for the current protocol.
alt_u8  Bit[15:8] pt_NUM_CENTERS  Number of tiles used by this interface.
alt_u8  Bit[23:16] pt_NUM_CA_LANES  Number of command/address lanes.
alt_u8  Bit[31:24] pt_NUM_DATA_LANES  Number of data lanes.
per_interface_base_address + 0x28  alt_u32  Bit[31:0]  pt_ODT_TABLE_LO  ODT table; 4 bits as in ENUM_ODT_TABLE order: [odt3_cs1, odt2_cs1, ..., odt0_cs0]
per_interface_base_address + 0x2C  alt_u32  Bit[31:0]   pt_ODT_TABLE_HI  ODT table; 4 bits as in ENUM_ODT_TABLE order: [odt3_cs3, odt2_cs3, ..., odt0_cs2]
per_interface_base_address + 0x34  alt_u16 Bit[15:0]  pt_RESERVED Field not used currently.
alt_u16 Bit[31:16]   pt_CAL_DATA_PTR  cal_data array offset from the starting address of the user-ram. This array's structure is described in the Parameter Table Arrays section.
per_interface_base_address + 0x38  alt_u32 Bit[31:0]  pt_DBG_SKIP_RANKS  Each set bit indicates that storing calibration report information for the corresponding rank should be skipped. For example, if bit[1]==1, then in a 2-rank design, the second rank's calibration debug information is not stored.
per_interface_base_address + 0x3C  alt_u32 Bit[31:0] pt_DBG_SKIP_GROUPS  Each set bit indicates that storing calibration report information for the corresponding DQS group should be skipped.
per_interface_base_address + 0x40  alt_u32 Bit[31:0]  pt_DBG_SKIP_STEPS  Each set bit represents a calibration step which should be skipped, as defined in ENUM_DBG_CALIB_SKIP.
per_interface_base_address + 0x44  alt_u8 Bit[7:0]  pt_NUM_MR  Number of words that store values to be written to Mode Registers.
alt_u8 Bit[15:8]  pt_NUM_DIMM_MR  Number of words that store control words for DIMM.
alt_u16 Bit[31:16]  pt_TILE_ID_PTR  tile_id array pointer, as an offset from the starting address of the user-ram; This array maps IDs of lanes used by the memory interface to the tiles they are placed in.
per_interface_base_address + 0x48  alt_u16 Bit[15:0]  pt_PIN_ADDR_PTR  pin_addr array pointer, as an offset from the starting address of the user-ram; This array stores the pin locations (on the calbus) of command/address and data pins.
alt_u16 Bit[31:16]  pt_MR_PTR  Mode Register and RDIMM/LRDIMM control word array pointer, as an offset from the starting address of the user RAM.
Level Two Title