Recovery Timing Violation

When you compile your designs with the Serial Digital Interface (SDI) II MegaCore function, you may encounter recovery timing violation. This violation is caused by the reset controller.

You may see the following failing path:

SDI_TX:SDI_TX_ins|SDI_TX_0002:sdi_tx_inst|altera_reset_controller:rst_controller|altera_reset_synchronizer:alt_rst_sync_uq1|altera_reset_synchronizer_int_chain_out

To overcome this issue, you can follow these steps:

1. Open the project .qsf file.
2. Add the following assignments:

set_instance_assignment -name GLOBAL_SIGNAL OFF -to "*|altera_reset_synchronizer:alt_rst_sync_uq1|altera_reset_synchronizer_int_chain_out"

set_instance_assignment -name GLOBAL_SIGNAL OFF -to "*sdi_ii_ed_loopback*|fifo_reset_sync_out"

This issue will be fixed in a future version of the SDI II MegaCore function.