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Honored Contributor
Honored ContributorEPM CPLD's Internal Osc Frequency
Hi! I'm working with a EPM570 and need a clock source. I created it with the block ALTUFM_OSC, set the frequency to 5.5 MHz and checked it worked by simulating the circuit. As stated in...
Altera_ForumHonored Contributor
Honored Contributorp43 says the real frequency can be between 3.33MHz and 5.56MHz
http://www.altera.com/literature/ug/ug_alt_ufm.pdf Rather than trying to build an oscillator circuit using a crystal, just use an oscillator. http://www.ecliptek.com/ http://www.ecliptek.com/oscillators/ec26/ Route the output of the oscillator to the clock pin of the CPLD. Cheers, Dave
