Data Clock-CPU Clock Relationship within the DELSIG11

Question: How is the Data Clock related to the CPU clock for the DELSIG11?

 

Answer:

The Data Clock and the CPU clock are related only in that they are both derived from the System Clock; they operate independently.  

The Data Clock and the Average CPU Overhead are related by the Sample Rate.  A sample rate is determined when the user sets the Data Clock in the User Module.  The maximum Data Clock rate is 8 MHz.  The following equation displays this relationship for the DELSIG11.

                Data Clock = (4 x 256) x Sample Rate ;    where the maximum Sample Rate  is 7.8 ksps (minimum = 125 sps)

The Average CPU Overhead is determined by the following equation:

                AverageCPUOverhead = (623 x Sample Rate)/(CPU Clock)