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Altera_Forum's avatar
Altera_Forum
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14 years ago

problem of lpm_mux in megafunction

I wish to know the sel function in megafunction of lpm_mux , is it edge trigger or level trigger ??

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  • Altera_Forum's avatar
    Altera_Forum
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    12 years ago

    Sorry, I posted the wrong question ((

    Here is what I meant to ask:

    Is it possible to use lpm_mux in pipeline mode to multiplex two stream of 8-bit data @ 50MHz each into a single stream of 8-bit data @ 100MHz ?

    Can lpm_mux on the first rising edge of the clock select the first 8-bit stream and on the second rising edge of the clock select the second 8-bit stream and so on?

    I suppose that in this case Sel is ignored by lpm_mux?
  • Altera_Forum's avatar
    Altera_Forum
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    12 years ago

    No. Its just a mux, Sel is always used and never ignored. You could easily do it though by having a toggle bit toggling at 2x data rate selecting the alternating halves of the wrod.