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Old 06-24-2005, 09:11 AM
Kris Neot
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Default Re: How do I convert a polynomial into a parallel scrambler formula?

yeah, if one has patience, one can derive each byte one by one.
I thought there must be some shortcut to this tideous process.



"newsgroup" <[email protected]> wrote in message
news:d9g8ca$qkp$[email protected]..
> I am just giving a general hint, should be applicable to your case also
> after some changes
>
> What you do is to tap the x7 and x4 bit of polynomial and XOR it with the
> bit 0 of incoming data stream. The xored value is your output bit 0. Then
> DEPENDING upon the protocol, you may either push in the output bit to msb
> position of polynomail and shift all other bits of polynomial either right
> or left depending upon your direction convention.
>
> Repeat the above process each input bit....
>
>
> "Kris Neot" <[email protected]> wrote in message
> news:[email protected]..
> > Sorry typo, should be S(x) = x(-7) + x(-4) + 1.
> > What is the method to do conversion?
> >
> >
> > "newsgroup" <[email protected]> wrote in message
> > news:d9g6mk$9j$[email protected]..
> >> what is the width of your polynomial. Is it -7 to +4....
> >>
> >> "Kris Neot" <[email protected]> wrote in message
> >> news:[email protected]..
> >> > My polynomial is S(x) = x(-7) + x(04) + 1, but my input data is one
> >> > byte
> >> > each clock period. What are the equations to inplement this data
> >> > scrambler?
> >> >
> >> >
> >> > Thanks.
> >> >
> >> >
> >> >
> >>
> >>

> >
> >

>
>



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