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Altera_Forum
Honored Contributor
19 years agoAltera Devices with built-in Clock ???
Hi All, Can someone tell me if any Altera devices have a built-in Clock? I currently use the max7000 series (7064/7128) chips for small projects such as lighting chasers and low-speed cont...
Altera_Forum
Honored Contributor
19 years agoYou do not need to send the clock out a pin and back in a pin (unless that is the only way to use a global in MAX II--I didn't check that). Going out of the device and back in won't help with any of the timing issues.
Most of the timing issues with a global divided-down clock are for paths that cross to and from the divided-down domain. As I said before, you'll probably be OK if you have all your logic on the divided-down clock and make it global. If you will have logic on more than one clock with synchronous paths between the domains, then beware of the caveats I posted in the other thread.