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Altera_Forum
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16 years ago

Arria II GX refclk pins

Hi there, Is there any assignment I need to set when I use the refclk pins as clk inputs? I am using EP2AGX65CU17C6 device. We connected a differential clock input to pin M19 and M20, which is ...
Altera_Forum's avatar
Altera_Forum
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16 years ago

Just tried 1.5-V PCML, got the following error msg:

Error: I/O standard "1.5-V PCML" is not valid for I/O pad "ref_clk_left". Only pins connected to GXB transceiver blocks can use this standard.