vhdl code for linear feedback shiftregister

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VHDL

Posted 11-Jan-11 22:22pm

helina devaraj

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Richard MacCutchan 12-Jan-11 7:25am

Rather than just posting demands for code, try doing some research of your own first, and then ask questions when you have tried to do some work and hit a problem.

Thomas Krojer 13-Jan-11 4:49am

words like 'please' would be fine

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Manfred Rudolf Bihy · Accepted Answer · 2011-01-11T22:49:00

Hi Helina,

find the VHDL code for LFSRs there: http://sciencezero.4hv.org/science/lfsr.htm[^], the site also has the codes for MMX, ARM, C++ and BASIC.

VHDL code for a LFSR

vhdl

signal lfsr : std_logic_vector(14 downto 0);
lfsr <= lfsr(13 downto 0) & (lfsr(14) xnor lfsr(0));

You may need to adjust for register length and tap points.

Best Regards,
Manfred

vhdl code for linear feedback shiftregister

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