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vhdl code for variable frequecy pulse

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malakarmakar

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hi

plzz can anyone tell me hw to write d vhdl code for pulse generator having variable frequecy like 50hz 150 hz.....i need to dump dis code in fpga
 

Try to find frequency divider codes.
It's ok for your purpose.. You need to divide your system clock for desired frequency.
They are pretty simple and can be loaded into FPGA easily..

Each HDL book has a frequency divider example...

Good luck...
Ilgaz
 

Maybe getting accurate frequency value for any range with 50% duty cycle is a bit harder....If you have got System Generator tool, try using DDS block...It directly generates the specified frequency and has support for changing the freq to any value with any level of accuracy...
 

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