AR #24379 - LogiCORE FIR Compiler V2.0 - When I select multiple coefficient sets I get zero filter output
LogiCORE FIR Compiler V2.0 - When I select multiple coefficient sets I get zero filter output
| AR# | 24379 |
| Part | Coregen FIR Compiler |
| Last Modified | 2006-12-08 00:00:00.0 |
| Status | Active |
| Keywords | CORE Generator, core, coef, MAC, 5.1 |
Description
Keywords: CORE Generator, core, coef, MAC, 5.1
When I have multiple coefficient sets, I get zero filter outputs. Why?
Solution
This problem occurs when a filter is built that has the following characteristics:- uses multiple coefficient sets
- is symmetric
- requires multiplier MAC engines
- is targeted at the Spartan family in which the output from the filter is zero
The solve this problem, make sure the filter response is set to "non_symmetric" even if the coefficients are symmetric.