25G Ethernet Intel® Arria® 10 FPGA IP Design Example User Guide

ID 683833
Date 12/14/2020
Public

1.5. Simulating the 25G Ethernet Intel FPGA IP Design Example Testbench

Figure 7. Procedure

Follow these steps to simulate the testbench:

  1. Change to the testbench simulation directory <design_example_dir>/example_testbench.
  2. Run the simulation script for the supported simulator of your choice. The script compiles and runs the testbench in the simulator. Refer to the table "Steps to Simulate the Testbench".
  3. Analyze the results. The successful testbench sends ten packets, receives ten packets, and displays "Testbench complete."
    Table 3.  Steps to Simulate the Testbench
    Simulator Instructions
    ModelSim In the command line, type vsim -do run_vsim.do

    If you prefer to simulate without bringing up the ModelSim GUI, type vsim -c -do run_vsim.do

    Note: The ModelSim* - Intel® FPGA Edition simulator does not have the capacity to simulate this IP core. You must use another supported ModelSim simulator such as ModelSim SE.
    NCSim In the command line, type sh run_ncsim.sh
    VCS In the command line, type sh run_vcs.sh
    Xcelium In the command line, type sh run_xcelium.sh

The successful test run displays output confirming the following behavior:

  1. Waiting for RX clock to settle
  2. Printing PHY status
  3. Sending 10 packets
  4. Receiving 10 packets
  5. Displaying "Testbench complete."

The following sample output illustrates a successful simulation test run:

#Ref clock is run at 625 MHz so whole numbers can used for all clock periods.
#Multiply reported frequencies by 33/32 to get actual clock frequencies.
#Waiting for RX alignment
#RX deskew locked
#RX lane alignment locked
#TX enabled
#**Sending Packet    1...
#**Sending Packet    2...
#**Sending Packet    3...
#**Sending Packet    4...
#**Sending Packet    5...
#**Sending Packet    6...
#**Sending Packet    7...
#**Received Packet   1...
#**Sending Packet    8...
#**Received Packet   2...
#**Sending Packet    9...
#**Received Packet   3...
#**Sending Packet    10...
#**Received Packet   4...
#**Received Packet   5...
#**Received Packet   6...
#**Received Packet   7...
#**Received Packet   8...
#**Received Packet   9...
#**Received Packet   10... 
#**
#** Testbench complete.
#**
#*****************************************

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