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Altera_Forum's avatar
Altera_Forum
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14 years ago

pll inclk from internal logic

In my design i want to generate a clock using an internal logic and then insert it to a PLL to multiply it by n. i understand a pll must get an input clock from a gclk or another pll or an int...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

thanks,

what do they mean by internal logic as an input the the ppls?

is this logic connects the pll outputs to the inclk in another pll only?

what is the reason that i can't connect a clock from an internal logic to a pll?

and in case i need to create the clock myself ,i couldn't find in the cyclon 3 datasheet jitter specification for an internal clock in the design. this clock used by hardware and not by memory or other plls.

thanks