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Mikexx's avatar
Mikexx
Icon for Occasional Contributor rankOccasional Contributor
3 years ago

ALTIOBUF - Enable input buffer dyamic delay chain

I get a series of errors when this feature is ticked in the ALTIOBUF: Cyclone V Quartus 20.1 Error (129036): Output port DATAOUT on atom "DQS_Diff_4:u_DQS_Diff_4|DQS_Diff_4_iobuf_bidir_3qg1:DQS_Di...
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EthanLi's avatar
EthanLi
Icon for Occasional Contributor rankOccasional Contributor
3 years ago

Hi,

​

This is Ethan from Intel AE team.

​

I have checked your design and find that the data_out(DQS_in) from the input delay chain connected directly to the output pin in the top design. Once you use the delay chain you should not connect the data_out of the delay chain to the output port of the top level directly, you may connect the data_out to the input of fifo or ddio etc.

I will upload the design compiled successfully.

Thanks,

Ethan