1.5.5 Simulation Flow

The following steps describe the simulation flow:

  1. Initially, the transceiver is at reset.
  2. The PRBS_gen block sends 40-bit wide PRBS7 pattern to the transceiver.
  3. Transmitter lanes are connected to receiver lanes internally in the testbench stimulus.
  4. The PRBS_chk block waits for the valid data and starts checking the receiver data.

The following figures show the simulation waveform for the PMA design highlighting PRBS checker status signals and Tx/Rx PRBS data lock. The simulation run time will be 79 us approximately.

Figure 1-9. Simulation Waveform for PMA Design Highlighting PRBS Checker Status
Figure 1-10. Simulation Waveform for PMA Design Highlighting PRBS Checker Lock