Test Engine FPGA IP User Guide: Agilex™ 3, Agilex™ 5, and Agilex™ 7 FPGAs

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ID 817758
Date 7/07/2025
Public
Document Table of Contents
Document Table of Contents x
1. About the Test Engine FPGA IP 2. Test Engine IP - Introduction 3. Parameterizing the Test Engine IP 4. Test Engine IP - Interface Signals 5. Test Engine IP - Software 6. Test Engine IP - Limitations 7. Document Revision History for the Test Engine FPGA IP User Guide
1. About the Test Engine FPGA IP x
1.1. Release Information
2. Test Engine IP - Introduction x
2.1. Test Engine IP Feature Support
3. Parameterizing the Test Engine IP x
3.1. Parameters 3.2. Drivers Parameters 3.3. Remote Access Parameters
3.2. Drivers Parameters x
3.2.1. CSR AXI4-Lite Driver Parameters 3.2.2. Memory AXI4 Driver Parameters 3.2.3. Memory Status Driver Parameters 3.2.4. Memory Reset Driver Parameters 3.2.5. CAM AXI4-Stream Driver Parameters
4. Test Engine IP - Interface Signals x
4.1. Remote Interface Signals 4.2. I/O PLL Interface Signals 4.3. Status Interface Signals 4.4. Global CSR interface Signals 4.5. Memory AXI4 Driver Interface Signals 4.6. CSR AXI-Lite Driver Interface Signals 4.7. Memory Status Driver Interface Signals 4.8. Memory Reset Driver Interface Signals 4.9. CAM AXI-Stream Driver Interface Signals 4.10. Registers
4.10. Registers x
4.10.1. Global Control Registers 4.10.2. Memory AXI4 Driver Registers 4.10.3. CSR AXI4-Lite Driver Registers 4.10.4. Memory Status Driver Registers 4.10.5. Memory Reset Driver Registers 4.10.6. CAM AXI4-Stream Driver Registers
4.10.1. Global Control Registers x
4.10.1.1. version_0 4.10.1.2. version_1 4.10.1.3. ctrl_status_0 4.10.1.4. driver_ctrl_status_1 4.10.1.5. driver_run_bitmask_0 4.10.1.6. driver_run_bitmask_1 4.10.1.7. driver_run_bitmask_2 4.10.1.8. driver_run_bitmask3 4.10.1.9. driver_done_bitmask_0 4.10.1.10. driver_done_bitmask_1 4.10.1.11. driver_done_bitmask_2 4.10.1.12. driver_done_bitmask_3 4.10.1.13. driver_error_bitmask_0 4.10.1.14. driver_error_bitmask_1 4.10.1.15. driver_error_bitmask_2 4.10.1.16. driver_error_bitmask_3
4.10.2. Memory AXI4 Driver Registers x
4.10.2.1. version_lo 4.10.2.2. version_hi 4.10.2.3. ctrl_stat_lo 4.10.2.4. ctrl_stat_hi 4.10.2.5. scratchpad_lo 4.10.2.6. scratchpad_hi 4.10.2.7. wr_log_ram_stat_lo 4.10.2.8. wr_log_ram_stat_hi 4.10.2.9. wr_log_ram_ctrl_lo 4.10.2.10. wr_log_ram_ctrl_hi 4.10.2.11. rd_log_ram_stat_lo 4.10.2.12. rd_log_ram_stat_hi 4.10.2.13. rd_log_ram_ctrl_lo 4.10.2.14. rd_log_ram_ctrl_hi 4.10.2.15. wr_err_counters_0_lo 4.10.2.16. wr_err_counters_0_hi 4.10.2.17. rd_err_counters_0_lo 4.10.2.18. rd_err_counters_0_hi 4.10.2.19. rd_err_counters_1_lo 4.10.2.20. rd_err_counters_1_hi 4.10.2.21. rd_pnf_0_lo 4.10.2.22. rd_pnf_0_hi 4.10.2.23. rd_pnf_1_lo 4.10.2.24. rd_pnf_1_hi 4.10.2.25. rd_pnf_2_lo 4.10.2.26. rd_pnf_2_hi 4.10.2.27. rd_pnf_3_lo 4.10.2.28. rd_pnf_3_hi 4.10.2.29. rd_pnf_4_lo 4.10.2.30. rd_pnf_4_hi 4.10.2.31. rd_pnf_5_lo 4.10.2.32. rd_pnf_5_hi 4.10.2.33. rd_pnf_6_lo 4.10.2.34. rd_pnf_6_hi 4.10.2.35. rd_pnf_7_lo 4.10.2.36. rd_pnf_7_hi 4.10.2.37. rd_pnf_8_lo 4.10.2.38. rd_pnf_8_hi 4.10.2.39. rd_pnf_9_lo 4.10.2.40. rd_pnf_9_hi 4.10.2.41. rd_pnf_10_lo 4.10.2.42. rd_pnf_10_hi 4.10.2.43. rd_pnf_11_lo 4.10.2.44. rd_pnf_11_hi 4.10.2.45. rd_pnf_12_lo 4.10.2.46. rd_pnf_12_hi 4.10.2.47. rd_pnf_13_lo 4.10.2.48. rd_pnf_13_hi 4.10.2.49. rd_pnf_14_lo 4.10.2.50. rd_pnf_14_hi 4.10.2.51. rd_pnf_15_lo 4.10.2.52. rd_pnf_15_hi 4.10.2.53. rd_pnf_16_lo 4.10.2.54. rd_pnf_16_hi 4.10.2.55. rd_pnf_17_lo 4.10.2.56. rd_pnf_17_hi 4.10.2.57. rd_pnf_18_lo 4.10.2.58. rd_pnf_18_hi 4.10.2.59. rd_pnf_19_lo 4.10.2.60. rd_pnf_19_hi 4.10.2.61. ter_dq_mask_0_lo 4.10.2.62. ter_dq_mask_0_hi 4.10.2.63. ter_dq_mask_1_lo 4.10.2.64. ter_dq_mask_1_hi 4.10.2.65. ter_lo 4.10.2.66. ter_hi
5. Test Engine IP - Software x
5.1. Overview 5.2. Python library 5.3. User programs 5.4. System Console library
5.2. Python library x
5.2.1. CSR AXI4-Lite Driver APIs 5.2.2. Memory AXI4 Driver APIs 5.2.3. General compiler APIs
5.2.1. CSR AXI4-Lite Driver APIs x
5.2.1.1. read_cmd 5.2.1.2. write_cmd
5.2.2. Memory AXI4 Driver APIs x
5.2.2.1. dq_alu_echo_op 5.2.2.2. dq_alu_invert_op 5.2.2.3. dq_alu_rotate_op 5.2.2.4. dq_alu_prbs_op 5.2.2.5. data_eq_dq_op 5.2.2.6. data_eq_raw_op 5.2.2.7. data_eq_addr_op 5.2.2.8. data_eq_id_op 5.2.2.9. dm_alu_echo_op 5.2.2.10. dm_alu_invert_op 5.2.2.11. dm_alu_rotate_op 5.2.2.12. dm_alu_prbs_op 5.2.2.13. strb_eq_dm_op 5.2.2.14. strb_eq_raw_op 5.2.2.15. addr_alu_echo_op 5.2.2.16. addr_alu_incr_op 5.2.2.17. addr_alu_rand_op 5.2.2.18. addr_op 5.2.2.19. write_worker_op 5.2.2.20. read_worker_op 5.2.2.21. write_cmd 5.2.2.22. read_cmd 5.2.2.23. wait_writes_cmd 5.2.2.24. wait_reads_cmd 5.2.2.25. sleep_cmd 5.2.2.26. driver_post_cmd 5.2.2.27. driver_wait_cmd 5.2.2.28. parallel_cmd 5.2.2.29. loop_cmd
5.2.3. General compiler APIs x
5.2.3.1. get_drivers 5.2.3.2. attach 5.2.3.3. dump
5.3. User programs x
5.3.1. Programs for Memory AXI4 Driver 5.3.2. Programs for CSR AXI4-Lite Driver
5.3.1. Programs for Memory AXI4 Driver x
5.3.1.1. Basic tutorials 5.3.1.2. Advanced tutorials 5.3.1.3. EMIF traffic patterns (for IO96B architecture) 5.3.1.4. HBM2E traffic patterns 5.3.1.5. MemSS traffic patterns (for IO96A architecture) 5.3.1.6. Traffic Program Builders 5.3.1.7. gencmd
5.3.1.1. Basic tutorials x
5.3.1.1.1. tut1_block_rw 5.3.1.1.2. tut2_byteen_test 5.3.1.1.3. tut3_instr_resume 5.3.1.1.4. tut4_parallel_rw Usage Description 5.3.1.1.5. tut5_multi_id 5.3.1.1.6. tut6_custom_bw 5.3.1.1.7. tut7_driver_sync
5.3.1.2. Advanced tutorials x
5.3.1.2.1. adv1_basic_rw 5.3.1.2.2. adv2_addr_fields 5.3.1.2.3. adv3_instr_resume
5.3.1.3. EMIF traffic patterns (for IO96B architecture) x
5.3.1.3.1. emif_tg_emulation 5.3.1.3.2. emif_tg_emulation_lite 5.3.1.3.3. emif_tg_emulation_long 5.3.1.3.4. emif_tg_emulation_inf 5.3.1.3.5. emif_narrow_transfer
5.3.1.4. HBM2E traffic patterns x
5.3.1.4.1. hbm_simulation1 5.3.1.4.2. hbm_simulation 5.3.1.4.3. hbm_mem_traversal_seq 5.3.1.4.4. hbm_mem_traversal_rand
5.3.1.5. MemSS traffic patterns (for IO96A architecture) x
5.3.1.5.1. memss_default
5.3.1.6. Traffic Program Builders x
5.3.1.6.1. mem_traversal
5.3.2. Programs for CSR AXI4-Lite Driver x
5.3.2.1. HBM2E traffic patterns 5.3.2.2. MemSS traffic patterns (for IO96A architecture)
5.3.2.1. HBM2E traffic patterns x
5.3.2.1.1. hbm_simulation1
5.3.2.2. MemSS traffic patterns (for IO96A architecture) x
5.3.2.2.1. memss_default
5.4. System Console library x
5.4.1. testengine_num_drivers 5.4.2. testengine_driver_list 5.4.3. testengine_run 5.4.4. testengine_reset 5.4.5. testengine_get_errors 5.4.6. testengine_get_done 5.4.7. testengine_status 5.4.8. testengine_reprogram 5.4.9. testengine_axi4_parse_errors
1. About the Test Engine FPGA IP
2. Test Engine IP - Introduction
3. Parameterizing the Test Engine IP
4. Test Engine IP - Interface Signals
5. Test Engine IP - Software
6. Test Engine IP - Limitations
7. Document Revision History for the Test Engine FPGA IP User Guide

5.3.1.1.4. tut4_parallel_rw

Usage

def traffic_patterns.MemAxi4DriverPrograms.tut4_parallel_rw (self)

Description

Issue writes and reads in parallel.

This program issues writes and reads in parallel while ensuring that:

  • The reads error check the writes by checking if the read data matches the write data. Simultaneously writing and reading from the same address is a Read-After-Write (RAW) hazard since you're not waiting for the write response. To avoid RAW hazards, this program is decomposed into stages wherein each stage accesses a different address region. Within each stage one address region is being written to, while the previous address region is being read from in parallel.

  • AXI sub-channel throughput is maximized by avoiding caution for non-existent hazards. This program doesn't write to an address that was previously read from, hence there's no risk of Write-After-Read (WAR) hazards, and hence each stage doesn't wait for read responses before proceeding.

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