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Altera_Forum
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15 years ago

Is there any "side effect" when using GPIO in DE2-115 to receive 48MHz CLKIN ?

Hi, I went through the schematic of DE2-115, and i can be sure that, all of the GPIO pins connected to Bank 4 of FPGA chip does not support CLOCKIN function. The full compilation was not s...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

The primary side effect as you mentioned is the inability to effectively use a pll off that clock. However you can still use it as a clock signal, it just may have some extra input delay due to the fact it doesn't have the dedicated routing resources to the global clock lines.

Pete