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AD9913 IO_UPDATE timing

Question asked by ricky on Aug 18, 2014
Latest reply on Oct 13, 2014 by ricky

Hello All,


One of my customers is considering utilizing AD9913 for new design.

He sent me the following technical questions,

1) How the frequency of SYNC_CLK is determined? I couldn’t find its definition in the data sheet.

2) Figure 35 is showing timing relationship of register update by using SYNC_CLK and I/O_UPDATE. The data sheet also mentioned that the data transfer from buffer register to active register in asynchronously as to the SYNC_CLK. Could you explain how to transfer by asynchronously? What is the disadvantage from user standpoint?


Best Regards,