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1. About the External Memory Interfaces Agilex™ 3 FPGA IP
2. Agilex™ 3 FPGA EMIF IP – Introduction
3. Agilex™ 3 FPGA EMIF IP - Configuring and Generating the IP
4. Agilex™ 3 FPGA EMIF IP – Simulating Memory IP
5. Agilex™ 3 FPGA EMIF IP - Validating the IP
6. Agilex 3 FPGA EMIF IP Debugging
7. Document Revision History for External Memory Interfaces (EMIF) IP User Guide
A. Agilex™ 3 FPGA EMIF IP – Product Architecture
B. Agilex™ 3 FPGA EMIF IP – End-User Signals
3.1. Creating an EMIF Project
3.2. Generating and Configuring the EMIF IP
3.3. EMIF IP LPDDR4 Parameter Descriptions
3.4. Generating HDL for Synthesis and Simulation
3.5. Generating the Synthesizable EMIF Design Example
3.6. Agilex™ 3 FPGA EMIF IP Pin and Resource Planning
3.7. Compiling the Agilex™ 3 EMIF Design Example
3.8. Agilex™ 3 FPGA EMIF IP – Timing Closure
3.9. Agilex™ 3 FPGA EMIF IP – Controller Optimization
3.3.1.1. Example: DQ Pin Swizzling Within DQS Group for a x32 LPDDR4 Interface
3.3.1.2. Example: Byte Swizzling for x32 LPDDR4 Interface
3.3.1.3. Example: Combining Pin and Byte Swizzling
3.3.1.4. Example: DQ Pin Swizzling Within DQS Group for 2 Channel x16 LPDDR4 Interface
3.3.1.5. Example: Byte Swizzling for 2 Channel x16 LPDDR4 Interface
6.1. Interface Configuration Performance Issues
6.2. Functional Issue Evaluation
6.3. Timing Issue Characteristics
6.4. Evaluating FPGA Timing Issues
6.5. Verifying Memory IP Using the Signal Tap Logic Analyzer
6.6. Guidelines for Developing HDL for Traffic Generator
6.7. Debugging with the External Memory Interface Debug Toolkit
6.8. Guidelines for Traffic Generator Status Check
6.9. Hardware Debugging Guidelines
6.10. Categorizing Hardware Issues
6.11. Agilex™ 3 FPGA EMIF IP - Mailbox Support
6.9.1. Create a Simplified Design that Demonstrates the Same Issue
6.9.2. Measure Power Distribution Network
6.9.3. Measure Signal Integrity and Setup and Hold Margin
6.9.4. Vary Voltage
6.9.5. Operate at a Lower Speed
6.9.6. Determine Whether the Issue Exists in Previous Versions of Software
6.9.7. Determine Whether the Issue Exists in the Current Version of Software
6.9.8. Try A Different PCB
6.9.9. Try Other Configurations
6.9.10. Debugging Checklist
6.10.1.1. Characteristics of Signal Integrity Issues
6.10.1.2. Evaluating Signal Integrity Issues
6.10.1.3. Skew
6.10.1.4. Crosstalk
6.10.1.5. Power System
6.10.1.6. Clock Signals
6.10.1.7. Address and Command Signals
6.10.1.8. Read Data Valid Window and Eye Diagram
6.10.1.9. Write Data Valid Window and Eye Diagram
A.1.1. Agilex™ 3 EMIF Architecture: I/O Subsystem
A.1.2. Agilex™ 3 EMIF Architecture: I/O SSM
A.1.3. Agilex™ 3 EMIF Architecture: HSIO Bank
A.1.4. Agilex™ 3 EMIF Architecture: I/O Lane
A.1.5. Agilex™ 3 EMIF Architecture: Input DQS Clock Tree
A.1.6. Agilex™ 3 EMIF Architecture: PHY Clock Tree
A.1.7. Agilex™ 3 EMIF Architecture: PLL Reference Clock Networks
A.1.8. Agilex™ 3 EMIF Architecture: Clock Phase Alignment
A.1.9. User Clock in Different Core Access Modes
A.1.10. Agilex™ 3 EMIF Sequencer
A.1.11. Agilex™ 3 EMIF Controller
A.1.12. Hard Memory Controller
A.1.13. Agilex™ 3 EMIF IP for Hard Processor Subsystem (HPS)
B.1. IP Interfaces for External Memory Interfaces (EMIF) IP - LPDDR4
B.2. s0_axi4_clock_in for External Memory Interfaces (EMIF) IP - LPDDR4
B.3. core_init_n for External Memory Interfaces (EMIF) IP - LPDDR4
B.4. s0_axi4_clock_in for External Memory Interfaces (EMIF) IP - LPDDR4
B.5. core_init_n for External Memory Interfaces (EMIF) IP - LPDDR4
B.6. s0_axi4_ctrl_ready for External Memory Interfaces (EMIF) IP - LPDDR4
B.7. s0_axi4_clock_out for External Memory Interfaces (EMIF) IP - LPDDR4
B.8. s1_axi4_ctrl_ready for External Memory Interfaces (EMIF) IP - LPDDR4
B.9. s0_axi4 for External Memory Interfaces (EMIF) IP - LPDDR4
B.10. s1_axi4 for External Memory Interfaces (EMIF) IP - LPDDR4
B.11. io96b0_to_hps for External Memory Interfaces (EMIF) IP - LPDDR4
B.12. io96b1_to_hps for External Memory Interfaces (EMIF) IP - LPDDR4
B.13. s0_axi4lite_clock for External Memory Interfaces (EMIF) IP - LPDDR4
B.14. s0_axi4lite_reset_n for External Memory Interfaces (EMIF) IP - LPDDR4
B.15. s0_axi4lite for External Memory Interfaces (EMIF) IP - LPDDR4
B.16. mem_0 for External Memory Interfaces (EMIF) IP - LPDDR4
B.17. mem_ck_0 for External Memory Interfaces (EMIF) IP - LPDDR4
B.18. mem_1 for External Memory Interfaces (EMIF) IP - LPDDR4
B.19. mem_ck_1 for External Memory Interfaces (EMIF) IP - LPDDR4
B.20. mem_reset_n for External Memory Interfaces (EMIF) IP - LPDDR4
B.21. oct_0 for External Memory Interfaces (EMIF) IP - LPDDR4
B.22. oct_1 for External Memory Interfaces (EMIF) IP - LPDDR4
B.23. ref_clk for External Memory Interfaces (EMIF) IP - LPDDR4
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6.7. Debugging with the External Memory Interface Debug Toolkit
The External Memory Interface Debug Toolkit for Agilex™ 3 FPGAs provides access to data collected by the sequencer during memory calibration, as well as analysis tools to evaluate the stability of the calibrated interface and assess hardware conditions.
Note: Because the HPS EMIF controller does not support the External Memory Interface Debug Toolkit, verify that the HPS memory interface is operational using the non-HPS memory controller first. Create a design that instantiates the FPGA memory controller, use parameters that will be used for the HPS memory interface, and route it to the same I/O that the HPS EMIF uses.
The debug toolkit provides the following types of reports:
- Interface and memory configuration, such as external memory protocol and interface width.
- Calibration results, including calibration status (pass or fail), calibration failure stage (if applicable), delay settings and margins, and VREF settings and margins.
The available task and analysis capabilities include the following:
- Ability to request recalibration of the memory interface.
- Ability to run the test engine in the design example.
- Ability to view the delay setting on any pin in the selected interface and update it if necessary.
- Ability to run VREF margining on the interface.
- Ability to run driver margining on the interface.