In my .xn file for my XK-1 board I have added an entry for a 200MHz ref clock, thus
<Node Id="0" Type="XS1-L1A" Oscillator="20MHz" SystemFrequency="400MHz" ReferenceFrequency="200MHz">>
The application compiles fine but I get a warning from the mapper, thus
xmap: Warning: Node "0" does not have 100Mhz reference clock.
The same setting in the .xn file and code in 9.95 did not raise any warnings.
Why is this warning generated? Will my reference clock actually be 200Mhz? I have not any checked the frequency as my system is currently pulled apart. Are there any other implications of the faster reference clock?
Thanks in advance for any help,
John Robbins.
New warning message in version10.4
Yes your reference clock will still operate at 200MHz.
We felt we should issue a warning when the reference clock is not 100MHz because timer constants will need to be scaled relative to the 100MHz reference value. This is particularly important when integrating code blocks from various sources.
We felt we should issue a warning when the reference clock is not 100MHz because timer constants will need to be scaled relative to the 100MHz reference value. This is particularly important when integrating code blocks from various sources.