- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hi!
I created a FIR filter using Altera FIR IP v.6.1 (and Quartus v6.1). The characteristics of my filter are: -Rate specification : Decimation : 8 -Number Of Input Channels : 1 -Input Number System : Signed Binary -Input Bit Width : 12 -Output Specification : Based On Method : Bit Width Only Full Resolution -I enter two different coefficient sets with 32 coefficients each -Coefficients Scaling Auto Bit Width 8 -Device Family : Stratix II -Structure : Distributed Arithmetic : Fully Parallel Filter -Pipeline Level : 1 -Data Storage : Logic Cells -Coefficients Storage : Logic Cells The problem is : the filter takes only the first coefficients set whatever the signal ("1" or "0") at the input "coef_set" of the filter. I tried to create the same filter in Single Rate and it works well. Why the coef_set selector does not work with Decimation?Link Copied
1 Reply
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
I would stay away froim the version 6.1 version fo the FIR compiler.
I cannot say for sure, but I think that I recall reading about lots of issues with this compiler (in that version). Upgrade to the latest tools (or at least 7.2) and see if the issue goes away.
Reply
Topic Options
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page