Difference between revisions of "FPGA"

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**[http://www.hdlworks.com/hdl_corner/vhdl_ref/ VHDL 93 Reference Guide]  
 
**[http://www.hdlworks.com/hdl_corner/vhdl_ref/ VHDL 93 Reference Guide]  
 
**[https://www.altera.com/support/software/download/altera_design/quartus_we/dnl-quartus_we.jsp QuartusII webdesign free]
 
**[https://www.altera.com/support/software/download/altera_design/quartus_we/dnl-quartus_we.jsp QuartusII webdesign free]
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Linkene her under kan der købes eval bords!!!
 
**[http://www.terasic.com www.terasic.com]
 
**[http://www.terasic.com www.terasic.com]
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**[http://www.digikey.dk www.digikey.dk]
 
[[Category:Elektronik]]
 
[[Category:Elektronik]]

Revision as of 16:29, 16 October 2010

I have one method of using a counter. The formula for calculating the counter is ( Actual Frequency / required frequency)

use that as the set point for your counter and make use of this code(This IS for 26MHz from 100MHz clock, so the Count value WilL be(100m/26M = 3.)

  • if (clock = '1' and clock'event ) then
  •      if ( count /= 4)
  •       count := count + 1 ;
  •       clock_out := clock_out ;
  •        else
  •         count := 0 ;
  •           clock_out := not clock_out ;
  •     end if;
  • end if ;

so for 13MHz the count value will be 7

Linkene her under kan der købes eval bords!!!