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Altera_Forum
Honored Contributor
9 years agoCyclone V Clock Not Toggling
Device: 5CGTFD9E5F35C7 Quartus Version 14.1 I am currently having problems with the on-board oscillator (CLK5p(U31)) not toggling when used as the clock source in Signal Tap(e.g. the 'waiting...
Altera_Forum
Honored Contributor
9 years agoI've tried both. I originally tapped the DRAM signals with the outputted clock which is a PLL(ref clock is CLK5p) output. But, since that outputted clock was not toggling I tried using the input clock directly and I received the same results. I recently connected another clock (CLK10p, references programmable clock X4) which caused the outputted DRAM clock to toggle. However, I cannot write to the DRAM because the bus waitrequest indicates that its busy. I have tried resetting as well as attempting to write to the bus even though waitrequest indicated busy. Those both did not allow any valid writes or reads and did not toggle the bus wait request.