![]() ![]() ![]() Add a Prescaler Fub – draw with a Mouse (context menu - right button). (icon ), find TutorVHDL symbol (in a Project subfolder) and dragĪttn: modul should be succesfully compiled!ģ. Put on a diagram TutorVHDL module (from the previous lab). Add the New file Top.bde ( Design Browser: Add new file | BlockĢ. Set active the work library tutorvhdl library (context menu SetĪctive option). Will be connected in a synchronous way (one and the only clock signal for every To see these events we will slow clock (divide input by 100,000,000) toġ Hz. Generator module located on PCB along with a properly built prescaler (i.e.įrequency divider), which will mark events for any synchronous modules in ourĭesign. We will use the external generated clock. the answer should be 15.Occasionally from button glitches on clock input. Since your equation (0.0333 * n = 0.5) has only 3 significant digits you should only use 3 significant digits in the result, i.e. You 15015015 is a 66.6ns period or 33.3ns clock period instead of the 33.333333333333333333333333333333333333333.ns clock period for 30 MHz (which is why you don't want to calculate repeating decimal rational numbers using limited precision as you will end up getting with errors like this unless you properly round the results. That is why you never never do 1/xxxx in a calculation unless you have a lot of precision and lots of significant digits. ![]() Hmm, I have an idea how you got there.too much rounding of significant digits in the calculations. If you count for 15,000,000 clock cycles you have 1/2 second and using that to toggle the clock is what you want not 15,015,015, and I still have no clue how you came up with that value. So if you count for 30,000,000 clock cycles you have 1 second Click to expand.!? I don't get how you came up with that numberģ0 MHz clock has 30,000,000 cycles per second. ![]()
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