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1. Introduction to Avalon Verification IP Suite
2. Clock Source BFM
3. Reset Source BFM
4. Avalon Interrupt Source and Interrupt Sink BFMs
5. Avalon-MM Master BFM
6. Avalon-MM Slave BFM
7. Avalon-MM Monitor
8. Avalon-ST Source BFM
9. Avalon-ST Sink BFM
10. Avalon-ST Monitor
11. Avalon Streaming Credit Source BFM
12. Avalon Streaming Credit Sink BFM
13. Conduit BFM
14. Tri-State Conduit BFM
15. External Memory BFM
16. Nios II Custom Instruction Master BFM
17. Nios II Custom Instruction Slave BFM
18. Avalon-ST Verilog HDL Testbench
19. Avalon-MM Verilog HDL and VHDL Testbenches
20. Document Revision History
5.4.1. event_all_transactions_complete()
5.4.2. event_command_issued()
5.4.3. event_max_command_queue_size()
5.4.4. event_min_command_queue_size()
5.4.5. event_read_response_complete()
5.4.6. event_response_complete()
5.4.7. event_write_response_complete()
5.4.8. get_command_issued_queue_size()
5.4.9. get_command_pending_queue_size()
5.4.10. get_read_response_queue_size()
5.4.11. get_response_address()
5.4.12. get_response_byte_enable()
5.4.13. get_response_burst_size()
5.4.14. get_response_data()
5.4.15. get_response_latency()
5.4.16. get_response_queue_size()
5.4.17. get_response_read_id()
5.4.18. get_response_read_response()
5.4.19. get_response_request()
5.4.20. get_response_wait_time()
5.4.21. get_response_write_id()
5.4.22. get_write_response_status()
5.4.23. get_write_response_queue_size()
5.4.24. get_version()
5.4.25. init()
5.4.26. pop_response()
5.4.27. push_command()
5.4.28. set_clken()
5.4.29. set_command_address()
5.4.30. set_command_arbiterlock()
5.4.31. set_command_byte_enable()
5.4.32. set_command_burst_count()
5.4.33. set_command_burst_size()
5.4.34. set_command_data()
5.4.35. set_command_debugaccess()
5.4.36. set_command_idle()
5.4.37. set_command_init_latency()
5.4.38. set_command_lock()
5.4.39. set_command_request()
5.4.40. set_command_timeout()
5.4.41. set_command_transaction_id()
5.4.42. set_command_write_response_request()
5.4.43. set_max_command_queue_size()
5.4.44. set_min_command_queue_size()
5.4.45. set_response_timeout()
5.4.46. signal_all_transactions_complete
5.4.47. signal_command_issued
5.4.48. signal_fatal_error
5.4.49. signal_max_command_queue_size
5.4.50. signal_min_command_queue_size
5.4.51. signal_read_response_complete
5.4.52. signal_response_complete
5.4.53. signal_write_response_complete
6.4.1. event_command_received()
6.4.2. event_response_issued()
6.4.3. event_max_response_queue_size()
6.4.4. event_min_response_queue_size()
6.4.5. get_clken()
6.4.6. get_command_address()
6.4.7. get_command_arbiterlock()
6.4.8. get_command_burst_count()
6.4.9. get_command_burst_cycle()
6.4.10. get_command_byte_enable()
6.4.11. get_command_data()
6.4.12. get_command_debugaccess()
6.4.13. get_command_queue_size()
6.4.14. get_command_lock()
6.4.15. get_command_request()
6.4.16. get_command_transaction_id()
6.4.17. get_command_write_response_request()
6.4.18. get_pending_read_latency_cycle()
6.4.19. get_pending_write_latency_cycle()
6.4.20. get_response_queue_size()
6.4.21. vget_slave_bfm_status
6.4.22. get_version()
6.4.23. init()
6.4.24. pop_command()
6.4.25. push_response()
6.4.26. set_command_transaction_mode()
6.4.27. set_interface_wait_time()
6.4.28. vset_max_response_queue_size()
6.4.29. set_min_response_queue_size()
6.4.30. set_read_response_id()
6.4.31. set_read_response_status()
6.4.32. set_response_burst_size()
6.4.33. set_response_data()
6.4.34. set_response_latency()
6.4.35. set_response_request()
6.4.36. set_response_timeout()
6.4.37. set_write_response_id()
6.4.38. set_write_response_status()
6.4.39. signal_command_received()
6.4.40. signal_error_exceed_max_pending_reads
6.4.41. signal_max_response_queue_size
6.4.42. signal_min_command_queue_size
6.4.43. signal_fatal_error
6.4.44. signal_response_issued
7.2.1. set_enable_a_address_align_with_data_width()
7.2.2. set_enable_a_beginbursttransfer_exist()
7.2.3. set_enable_a_beginbursttransfer_legal()
7.2.4. set_enable_a_beginbursttransfer_single_cycle()
7.2.5. set_enable_a_begintransfer_exist()
7.2.6. set_enable_a_begintransfer_legal()
7.2.7. set_enable_a_begintransfer_single_cycle()
7.2.8. set_enable_a_burst_legal()
7.2.9. set_enable_a_byteenable_legal()
7.2.10. set_enable_a_constant_during_burst()
7.2.11. set_enable_a_constant_during_clk_disabled()
7.2.12. set_enable_a_constant_during_waitrequest()
7.2.13. set_enable_a_exclusive_read_write()
7.2.14. set_enable_a_half_cycle_reset_legal()
7.2.15. set_enable_a_less_than_burstcount_max_size()
7.2.16. set_enable_a_less_than_maximumpendingreadtransactions()
7.2.17. set_enable_a_no_readdatavalid_during_reset()
7.2.18. set_enable_a_no_read_during_reset()
7.2.19. set_enable_a_no_write_during_reset()
7.2.20. set_enable_a_readid_sequence()
7.2.21. set_enable_a_read_response_sequence()
7.2.22. set_enable_a_read_response_timeout()
7.2.23. set_enable_a_register_incoming_signals()
7.2.24. set_enable_a_waitrequest_during_reset()
7.2.25. set_enable_a_waitrequest_timeout()
7.2.26. set_enable_a_write_burst_timeout()
7.2.27. set_enable_a_writeid_sequence()
7.2.28. Coverage Group
7.2.29. Transaction Monitoring
7.2.28.1. set_enable_c_b2b_read_read()
7.2.28.2. set_enable_c_b2b_read_write()
7.2.28.3. set_enable_c_b2b_write_read()
7.2.28.4. set_enable_c_b2b_write_write()
7.2.28.5. set_enable_c_continuous_read()
7.2.28.6. set_enable_c_continuous_readdatavalid()
7.2.28.7. set_enable_c_continuous_waitrequest()
7.2.28.8. set_enable_c_continuous_waitrequest_from_idle_to_read()
7.2.28.9. set_enable_c_continuous_waitrequest_from_idle_to_write()
7.2.28.10. set_enable_c_continuous_write()
7.2.28.11. set_enable_c_idle_before_transaction()
7.2.28.12. set_enable_c_idle_in_read_response()
7.2.28.13. set_enable_c_idle_in_write_burst()
7.2.28.14. set_enable_c_pending_read()
7.2.28.15. set_enable_c_read()
7.2.28.16. set_enable_c_read_after_reset()
7.2.28.17. set_enable_c_read_burstcount()
7.2.28.18. set_enable_c_read_byteenable()
7.2.28.19. set_enable_c_read_latency()
7.2.28.20. set_enable_c_read_response()
7.2.28.21. set_enable_c_waitrequest_in_write_burst()
7.2.28.22. set_enable_c_waitrequested_read()
7.2.28.23. set_enable_c_waitrequest_without_command()
7.2.28.24. set_enable_c_waitrequested_write()
7.2.28.25. set_enable_c_write()
7.2.28.26. set_enable_c_write_with_and_without_writeresponserequest()
7.2.28.27. set_enable_c_write_after_reset()
7.2.28.28. set_enable_c_write_burstcount()
7.2.28.29. set_enable_c_write_byteenable()
7.2.28.30. set_enable_c_write_response()
7.2.29.1. event_transaction_fifo_threshold()
7.2.29.2. event_transaction_fifo_overflow()
7.2.29.3. event_command_received()
7.2.29.4. event_read_response_complete()
7.2.29.5. event_write_response_complete()
7.2.29.6. event_response_complete()
7.2.29.7. get_clken()
7.2.29.8. get_version()
7.2.29.9. get_command_address()
7.2.29.10. get_command_arbiterlock()
7.2.29.11. get_command_burst_count()
7.2.29.12. get_command_burst_cycle()
7.2.29.13. get_command_byte_enable()
7.2.29.14. get_command_data()
7.2.29.15. get_command_debugaccess()
7.2.29.16. get_command_issued_queue_size()
7.2.29.17. get_command_queue_size()
7.2.29.18. get_command_lock()
7.2.29.19. get_command_request()
7.2.29.20. get_command_transaction_id()
7.2.29.21. get_command_write_response_request()
7.2.29.22. get_read_response_queue_size()
7.2.29.23. get_response_address()
7.2.29.24. get_response_byte_enable()
7.2.29.25. get_response_burst_size()
7.2.29.26. get_response_data()
7.2.29.27. get_response_latency()
7.2.29.28. get_response_queue_size()
7.2.29.29. get_response_read_id()
7.2.29.30. get_response_read_response()
7.2.29.31. get_response_request()
7.2.29.32. get_response_wait_time()
7.2.29.33. get_response_write_id()
7.2.29.34. get_response_write_response()
7.2.29.35. get_transaction_fifo_max()
7.2.29.36. get_transaction_fifo_threshold()
7.2.29.37. get_write_response_queue_size()
7.2.29.38. init()
7.2.29.39. pop_command()
7.2.29.40. pop_response()
7.2.29.41. set_command_transaction_mode()
7.2.29.42. set_transaction_fifo_max()
7.2.29.43. set_transaction_fifo_threshold()
7.2.29.44. signal_command_received
7.2.29.45. signal_fatal_error
7.2.29.46. signal_read_response_complete
7.2.29.47. signal_response_complete
7.2.29.48. signal_transaction_fifo_overflow
7.2.29.49. signal_transaction_fifo_threshold
7.2.29.50. signal_write_response_complete
8.4.1. event_min_transaction_queue_size()
8.4.2. event_response_done()
8.4.3. event_src_driving_transaction()
8.4.4. event_src_not_ready()
8.4.5. event_src_ready()
8.4.6. event_src_transaction_complete()
8.4.7. get_response_latency()
8.4.8. get_response_queue_size()
8.4.9. get_src_ready()
8.4.10. get_src_transaction_complete()
8.4.11. get_transaction_queue_size()
8.4.12. get_version()
8.4.13. init()
8.4.14. pop_response()
8.4.15. push_transaction()
8.4.16. set_max_transaction_queue_size()
8.4.17. set_min_transaction_queue_size()
8.4.18. set_response_timeout()
8.4.19. set_transaction_channel()
8.4.20. set_transaction_data()
8.4.21. set_transaction_idles()
8.4.22. set_transaction_eop()
8.4.23. set_transaction_empty()
8.4.24. set_transaction_error()
8.4.25. set_transaction_sop()
8.4.26. signal_fatal_error
8.4.27. signal_max_transaction_queue_size
8.4.28. signal_min_transaction_queue_size
8.4.29. signal_response_done
8.4.30. signal_src_driving_transaction
8.4.31. signal_src_not_ready
8.4.32. signal_src_ready
8.4.33. signal_src_transaction_complete
9.4.1. event_sink_ready_assert()
9.4.2. event_sink_ready_deassert()
9.4.3. get_transaction_channel()
9.4.4. get_transaction_data()
9.4.5. get_transaction_idles()
9.4.6. get_transaction_eop()
9.4.7. get_transaction_empty()
9.4.8. get_transaction_error()
9.4.9. get_transaction_queue_size()
9.4.10. get_transaction_sop()
9.4.11. get_version()
9.4.12. init()
9.4.13. pop_transaction()
9.4.14. set_ready()
9.4.15. signal_fatal_error
9.4.16. signal_sink_ready_assert
9.4.17. signal_sink_ready_deassert
9.4.18. signal_transaction_received
10.2.1. set_enable_a_empty_legal()
10.2.2. set_enable_a_less_than_max_channel()
10.2.3. set_enable_a_no_data_outside_packet()
10.2.4. set_enable_a_non_missing_endofpacket()
10.2.5. set_enable_a_non_missing_startofpacket()
10.2.6. set_enable_a_valid_legal()
10.2.7. Coverage Group
10.2.8. Transaction Monitoring
10.2.7.1. set_enable_c_all_idle_beats()
10.2.7.2. set_enable_c_all_valid_beats()
10.2.7.3. set_enable_c_b2b_data_different_channel()
10.2.7.4. set_enable_c_b2b_data_same_channel()
10.2.7.5. set_enable_c_b2b_packet_different_channel()
10.2.7.6. set_enable_c_b2b_packet_in_different_transaction()
10.2.7.7. set_enable_c_b2b_packet_same_channel()
10.2.7.8. set_enable_c_b2b_packet_within_single_cycle()
10.2.7.9. set_enable_c_channel_change_in_packet()
10.2.7.10. set_enable_c_empty()
10.2.7.11. set_enable_c_error()
10.2.7.12. set_enable_c_error_in_middle_of_packet()
10.2.7.13. set_enable_c_idle_beat_between_packet()
10.2.7.14. set_enable_c_multiple_packet_per_cycle()
10.2.7.15. set_enable_c_non_valid_ready()
10.2.7.16. set_enable_c_non_valid_non_ready()
10.2.7.17. set_enable_c_packet()
10.2.7.18. set_enable_c_packet_no_idles_no_back_pressure()
10.2.7.19. set_enable_c_packet_size()
10.2.7.20. set_enable_c_packet_with_back_pressure()
10.2.7.21. set_enable_c_packet_with_idles()
10.2.7.22. set_enable_c_partial_valid_beats()
10.2.7.23. set_enable_c_single_packet_per_cycle()
10.2.7.24. set_enable_c_transfer()
10.2.7.25. set_enable_c_transaction_after_reset()
10.2.7.26. set_enable_c_valid_non_ready()
10.2.8.1. event_transaction_fifo_threshold()
10.2.8.2. event_transaction_fifo_overflow()
10.2.8.3. get_transaction_channel()
10.2.8.4. get_transaction_data()
10.2.8.5. get_transaction_empty()
10.2.8.6. get_transaction_eop()
10.2.8.7. get_transaction_error()
10.2.8.8. get_transaction_fifo_max()
10.2.8.9. get_transaction_fifo_threshold()
10.2.8.10. get_transaction_idles()
10.2.8.11. get_transaction_queue_size()
10.2.8.12. get_transaction_sop()
10.2.8.13. get_version()
10.2.8.14. pop_transaction()
10.2.8.15. set_transaction_fifo_max()
10.2.8.16. set_transaction_fifo_threshold()
10.2.8.17. signal_fatal_error
10.2.8.18. signal_transaction_fifo_overflow
10.2.8.19. signal_transaction_fifo_threshold
10.2.8.20. signal_transaction_received
11.3.1. initialize()
11.3.2. rst()
11.3.3. get_src_transaction_complete()
11.3.4. get_outstanding_credit()
11.3.5. push_transaction()
11.3.6. set_max_transaction_queue_size()
11.3.7. set_min_transaction_queue_size()
11.3.8. set_transaction_data()
11.3.9. set_transaction_channel()
11.3.10. set_transaction_error()
11.3.11. set_transaction_idles()
11.3.12. set_transaction_sop()
11.3.13. set_transaction_eop()
11.3.14. set_transaction_empty()
11.3.15. return_credit()
11.3.16. set_user_signal_per_symbol_data()
11.3.17. push_user_signal_per_symbol_transaction()
11.3.18. set_user_signal_per_packet_data()
11.3.19. push_user_signal_per_packet_transaction()
11.3.20. signal_credit_arrived
11.3.21. signal_fatal_error
11.3.22. signal_src_transaction_complete
11.3.23. signal_src_driving_transaction
11.3.24. signal_max_transaction_queue_size
11.3.25. signal_min_transaction_queue_size
12.3.1. initialize()
12.3.2. rst()
12.3.3. get_outstanding_credit()
12.3.4. get_transaction_idles()
12.3.5. get_transaction_data()
12.3.6. get_transaction_channel()
12.3.7. get_transaction_error()
12.3.8. get_transaction_sop()
12.3.9. get_transaction_eop()
12.3.10. get_transaction_empty()
12.3.11. pop_transaction()
12.3.12. send_credit()
12.3.13. get_user_signal_per_symbol_data()
12.3.14. pop_user_signal_per_symbol_transaction()
12.3.15. get_user_signal_per_packet_data()
12.3.16. pop_user_signal_per_packet_transaction()
12.3.17. signal_fatal_error
12.3.18. signal_has_max_credits
12.3.19. signal_transaction_received
14.2.1. event_interface_granted()
14.2.2. event_grant_deasserted_while_request_remain_asserted
14.2.3. event_max_transaction_queue_size()
14.2.4. event_min_transaction_queue_size()
14.2.5. get_input_transaction_queue_size()
14.2.6. get_output_transaction_queue_size()
14.2.7. get_transaction_<role name>_in()
14.2.8. get_transaction_latency()
14.2.9. get_version()
14.2.10. pop_transaction()
14.2.11. push_transaction()
14.2.12. set_max_transaction_queue_size()
14.2.13. set_min_transaction_queue_size()
14.2.14. set_num_of_transactions()
14.2.15. set_transaction_<role name>_out()
14.2.16. set_transaction_<role name>_outen()
14.2.17. set_transaction_idles()
14.2.18. set_valid_transaction_<role name>_out()
14.2.19. signal_all_transactions_complete
14.2.20. signal_fatal_error
14.2.21. signal_grant_deasserted_while_request_remain_asserted
14.2.22. signal_interface_granted
14.2.23. signal_max_transaction_queue_size
14.2.24. signal_min_transaction_queue_size
16.2.1.1. event_unexpected_result_received()
16.2.1.2. event_instructions_completed()
16.2.1.3. event_max_instruction_queue_size()
16.2.1.4. event_min_instruction_queue_size()
16.2.1.5. event_max_result_queue_size()
16.2.1.6. event_min_result_queue_size()
16.2.1.7. get_instruction_queue_size()
16.2.1.8. get_result_delay()
16.2.1.9. get_result_queue_size()
16.2.1.10. get_result_value()
16.2.1.11. get_version()
16.2.1.12. insert_instruction()
16.2.1.13. pop_result()
16.2.1.14. push_instruction()
16.2.1.15. retrieve_result()
16.2.1.16. set_ci_clk_en()
16.2.1.17. set_clock_enable_timeout()
16.2.1.18. set_instruction_a()
16.2.1.19. set_instruction_b()
16.2.1.20. set_instruction_c()
16.2.1.21. set_instruction_dataa()
16.2.1.22. set_instruction_datab()
16.2.1.23. set_instruction_err_inject()
16.2.1.24. set_instruction_idle()
16.2.1.25. set_instruction_n()
16.2.1.26. set_instruction_readra()
16.2.1.27. set_instruction_readrb()
16.2.1.28. set_instruction_timeout()
16.2.1.29. set_instruction_writerc()
16.2.1.30. set_max_instruction_queue_size()
16.2.1.31. set_max_result_queue_size()
16.2.1.32. set_min_instruction_queue_size()
16.2.1.33. set_min_result_queue_size()
16.2.1.34. set_result_timeout()
16.2.1.35. signal_unexpected_result_received
16.2.1.36. signal_fatal_error
16.2.1.37. signal_instructions_completed
16.2.1.38. signal_instruction_start
16.2.1.39. signal_max_instruction_queue_size
16.2.1.40. signal_max_result_queue_size
16.2.1.41. signal_min_instruction_queue_size
16.2.1.42. signal_min_result_queue_size
16.2.1.43. signal_result_received
17.2.1. event_instruction_inconsistent()
17.2.2. event_instruction_unchanged()
17.2.3. event_result_driven()
17.2.4. event_result_done()
17.2.5. event_unknown_instruction_received()
17.2.6. get_ci_clk_en()
17.2.7. get_instruction_a()
17.2.8. get_instruction_b()
17.2.9. get_instruction_c()
17.2.10. get_instruction_dataa()
17.2.11. get_instruction_datab()
17.2.12. get_instruction_idle()
17.2.13. get_instruction_n()
17.2.14. get_instruction_readra()
17.2.15. get_instruction_readrb()
17.2.16. get_instruction_writerc()
17.2.17. get_version()
17.2.18. insert_result()
17.2.19. retrieve_instruction()
17.2.20. set_clock_enable_timeout()
17.2.21. set_instruction_a()
17.2.22. set_instruction_b()
17.2.23. set_instruction_c()
17.2.24. set_instruction_timeout()
17.2.25. set_result_delay()
17.2.26. set_result_err_inject()
17.2.27. set_result_value()
17.2.28. signal_fatal_error
17.2.29. signal_instructions_inconsistent
17.2.30. signal_known_instruction_received
17.2.31. signal_result_done
17.2.32. signal_result_driven
17.2.33. signal_unknown_instruction_received
6.1. Timing
The following timing diagram illustrates the sequence of events for an Avalon-MM Slave BFM. It shows the slave BFM responding to interleaved writes and reads when the readdatavalid signal is present.
Figure 8. Avalon-MM Slave Responding to Interleaved Write and Read Transactions
| Symbol | Description |
|---|---|
| Twt_1 | The response wait time, which is three cycles. The slave sets this value using the set_interface_wait_time command. |
| Twr | waitrequest is sampled #1 after the falling edge of clk. |
| Twt_2 | The response wait time for the first read, which is 2 cycles. The slave sets this value using the set_interface_wait_time command. |
| Scr_1–Scr_2 | Signals when read commands were received. The event name is signal_command_received. |
| Trl_1,Trl_2 | The response latency for the reads, which is 3 cycles. The slave sets this time using the set_response_latency command. |
| Twrl_1 | The write response latency for the first write, which is 3 cycles. This is the time between when the write command is accepted, and the write response is provided by the slave. T |
| Src_1,Src_3 | Signals write responses. The event name is signal_response_issued. |
| Src_2,Src_4 | Signals read responses. The event name is signal_response_issued. |
| TID_1–TID_4 | Reference number to identify each read or write transaction. |
| ID_1, ID_3 | Reference number to identify write transactions. |
| ID_2, ID_4 | Reference number to identify read transactions. |
Figure 9. Avalon-MM Slave Receiving Write and Read Commands with No readdatavalid SignalThe following timing diagram illustrates the sequence of events for an Avalon-MM Slave BFM. The slave BFM receives a write followed by a read when the readdatavalid signal is not present.
| Symbol | Description |
|---|---|
| Ti | The initial command latency which is two cycles for transactions 1 and 2. |
| Twt_1 | The response wait time which is 3 cycles. The master gets this value using the get_response_wait_time command. |
| Twt_2 | The response wait time for the first read, which is 2 cycles. The slave sets this value using the set_interface_wait_time command. |
| Twr | waitrequest is sampled #1 after the falling edge of clk. |
| Trl_1 | The response latency for the first read, which is 0 cycles. The master gets this time using the get_response_latency command. |
| Scr_1, Scr_2 | Signals write and read commands. The event name is signal_command_issued. |
| Src_1 | Signals the first read response. The event name is signal_response_complete. |
| Satc | Signals the end of the test. The event name is signal_all_transactions_complete |