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SystemVerilog Tutorials
Verifying a Master DUT
Mentor Verification IP AE AXI4-Lite User Guide, V10.3
123
April 2014
handle_read_data_ready()
The handle_read_data_ready() task handles the RREADY signal for the read data channel. It
delays the assertion of the RREADY signal based on the settings of master_ready_delay_mode
and m_rd_data_phase_ready_delay. The handle_read_data_ready() task code is similar in
operation to the handle_write_resp_ready() task. Refer to “SystemVerilog AXI4-Lite Master
BFM Test Program” on page 385 for the complete handle_read_data_ready() code listing.
Verifying a Master DUT
A master DUT component is connected to a slave BFM at the signal-level. A slave test program,
written at the transaction-level, generates stimulus via the slave BFM to verify the master DUT.
Figure 6-4 illustrates a typical top-level test bench environment.
Figure 6-4. Master DUT Top-Level Test Bench Environment
In this example, the slave test program is a simple memory model.
A top-level file instantiates and connects all the components required to test and monitor the
DUT, and controls the system clock (ACLK) and reset (ARESETn) signals.
BFM Slave Test Program
The slave test program is a memory model that contains two APIs: a Basic Slave API Definition
and an Advanced Slave API Definition.
The Basic Slave API Definition allows you to create a wide range of stimulus scenarios to test a
master DUT. This API definition simplifies the creation of slave stimulus based on the default
response of OKAY to master read and write transactions. The Advanced Slave API Definition
allows you to create additional response scenarios to transactions.
Slave
BFM
Master
DUT
Slave
test
program
Top-level file
- AMBA AXI4-Lite 1
- User Guide 1
- Table of Contents 10
- List of Examples 12
- List of Figures 14
- List of Tables 15
- About This User Guide 17
- Protocol Restrictions 17
- Supported Simulators 18
- Simulator GCC Requirements 18
- Chapter 1 21
- Mentor VIP Altera Edition 21
- What Is a Transaction? 22
- AXI4-Lite Transactions 22
- Chapter 2 27
- SystemVerilog API Overview 27
- Chapter 3 39
- SystemVerilog Master BFM 39
- SystemVerilog Master API 43
- Returns 44
- Example 58
- Chapter 4 63
- SystemVerilog Slave BFM 63
- SystemVerilog Slave API 68
- Arguments config_name 69
- Chapter 5 91
- SystemVerilog Monitor API 96
- Prototype 100
- Arguments 100
- April 2014 102
- SystemVerilog Monitor BFM 105
- Helper Functions 111
- SystemVerilog Tutorials 115
- Chapter 6 115
- BFM Master Test Program 116
- Verifying a Slave DUT 117
- Verifying a Master DUT 123
- Basic Slave API Definition 124
- *_valid_delay = 4 127
- *_ready_delay = 2 127
- Advanced Slave API Definition 129
- Initial Block 131
- Chapter 7 137
- VHDL API Overview 137
- Test Program VHDL 138
- Configuration 139
- Creating Transactions 139
- Transaction Definition 140
- Executing Transactions 144
- Waiting Events 145
- Access Transaction Record 146
- Operation Mode 147
- Channel Handshake Delay 147
- Handshake Delay 148
- Transaction Done 149
- Chapter 8 151
- VHDL Master BFM 151
- Master BFM Protocol Support 152
- Master Timing and Events 152
- Master BFM Configuration 152
- Master Assertions 155
- VHDL Master API 156
- Chapter 9 213
- VHDL Slave BFM 213
- Slave BFM Configuration 214
- Slave Assertions 216
- VHDL Slave API 217
- Operational 223
- Transaction 223
- Chapter 10 279
- VHDL Monitor BFM 279
- Monitor BFM Configuration 280
- Monitor Assertions 282
- VHDL Monitor API 283
- Chapter 11 335
- VHDL Tutorials 335
- BFM Slave Test Program 341
- Chapter 12 353
- Running the Qsys Tool 356
- Running a Simulation 359
- ModelSim Simulation 360
- Editing the modelsim.ini File 363
- Questa Simulation 364
- Cadence IES Simulation 364
- Synopsys VCS Simulation 366
- Appendix A 369
- AXI4-Lite Assertions 384
- Appendix B 385
- SystemVerilog Test Programs 385
- Appendix C 397
- VHDL Test Programs 397
- End-User License Agreement 409
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