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Altera_Forum
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15 years ago

fast adc connect to cyclone ii

I have a 250M sample rate ADC ( AD9481 , two 8 bit output channels) connect to cyclone II EP2C8Q208C8 , two of their pins ( DCO+ and DCO-, their clock is 60M) are differential output are connect to d...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I have DDIO out block with LVDS positive pin and negative differential pins (for out clock as input) assignment without success , it said the following error :

Error: Node "outclock" is used as the input clock of DDIO output registers but does not use global clock ......

Can you help me ??