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?