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Altera_Forum
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14 years ago

Driving differential clock from Cyclone III Dev Board to daugther card

Hello, I am attempting to drive a differential clock out of the Cyclone III Development Board (EP3C120F780) to the "Data Conversion HSMC" daughter card. I want to clock data to a 14-bit DAC on...
Altera_Forum's avatar
Altera_Forum
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14 years ago

I tried removing the ALT_OUTBUF_DIFF so as to let the compiler assign the negative output. But this does not solve the problem. I still get the follow error:

Error: Pad 284 of non-differential I/O pin 'DAC[1]' in pin location AE27 is too close to pad 282 of differential I/O pin 'DAC_CLK_OUT_P' in pin location AC26 -- pads must be separated by a minimum of 5 pads. Use the Pad View of Pin Planner to debug.