GTS SDI II IP Design Example User Guide: Agilex™ 5 FPGAs and SoCs

ID 823543
Date 5/30/2025
Public

2.4.2. Test Description

The SDI II design example simulation only checks for the assertion of trs_locked signal and the number of transceiver reconfiguration triggered after every video standard switching.
Figure 26. Video Standard Sequence - Triple Rate DesignThe following figure shows the sequence of the video standard for triple-rate design:
Figure 27. Video Standard Sequence - Multirate Design

The following figure shows the sequence of the video standard for multi-rate design:

For single-rate design, the IP tests one video standard:

  • HD single-rate – HD
  • 3G single-rate – 3G Level A 10-bit Multiplex
  • 12G single rate – 12G 10-bit Multiplex Type 1

Figure 28. Simulation Waveform
Table 15.  Signals Description
Testbench signal Description
/tb_top/tb_rx_checker/rx_std Video standard keeps switching after obtaining lock signal
/tb_top/tb_rx_checker/align_locked Lock signals from IP
/tb_top/tb_rx_checker/trs_locked
/tb_top/tb_rx_checker/reconfig_count Actual number of transceiver reconfiguration triggered after every video standard switching versus the expected number of configurations.
/tb_top/tb_rx_checker/expected_rcfgcount

The following message in the simulator indicates a succesful test: