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Hi:
does anybody have the details of the pipelined lpmmux?
1. For instance I am able to enter any value in mega wizard for no. of pipeline stages.
Will the tool honor it?
2. Also, how are the pipeline stages inserted i.e. based on what logic (equal no. of comb lcells
between the stages)
3. In the generated synthesis netlist, I see an external_reg. Does that mean the output will be registered as well?
4. Will the inputs be registered as well?
5. Is the lpm-mux performance friendly? I want a pipelined mux tree (64 bits of data) with 500MHz clock to meet my timing. I can do lpm mux or hand place it if possible.
cheers!
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Just try it!
Run 'Analysis & SYnthesis', then open the RTL viewer (Tools->Netlist Viewers-> RTL Viewer) and you can check Q1,2,3 and 4.
For Q5 do a full compilation with a 500 MHz clock in your SDC file.
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