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

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: