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Altera_Forum's avatar
Altera_Forum
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13 years ago

Dedicated clock pin on DE2

Hi Is there a way to get a clock signal from an external device into any PLL clockin on the DE2? I've read that those clockin must be from a dedicated clock, but if I search in the manual ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Please review the schematic for the DE2. There are several versions of this board (DE2, DE2-70, DE2-115)

On the DE2, there is an SMA on the board, it connects to pin P26 which is called CLOCK_EXT in the schematic and connects to CLK7 on the FPGA.

You should be able to use that.

Cheers,

Dave