Why are my outputs incorrect when using a random input for the ND signal in a single rate half-band fully parallel filter generate for Virtex-4?
There are 3 ways to work around this problem and ensure that the output remains correct.
1. Use the CE port instead of ND.
2. Only Hold the ND signal HIGH for 1 cycle, before de-asserting it.
3. Assert the ND signal and hold it HIGH.