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Altera_Forum
Honored Contributor
15 years agoCyclone III pulse generator
Hello, I'm designing a PCB with a Cyclone III FPGA. Now I would like to have a few output (block) signals adjustable in frequency (100KHz - 1MHz), duty-cycle and phase. My questions: - C...
Altera_Forum
Honored Contributor
15 years ago --- Quote Start --- Do you know where I can find an example project (VHDL) for such a pulse generator? --- Quote End --- Browse the web: there are a lot of VHDL tutorials available online and most of them offer these kind of code samples. You must select the one which meets your needs. Take also a look to www.opencores.com --- Quote Start --- Other question: Do I need to connect a crystal to the FPGA ( EP3C10E144C8N ) or does it has it's own internal clock? --- Quote End --- You can't use a crystal nor internal clock. You must connect to a active clock. If you have never designed with FPGAs you'd better look at the schematics of the Cyclone starter kit: you'll find it on Altera website; there's also a lot of literature and tutorials which can help you.