What is the cause of:
"ERROR ERROR:PhysDesignRules:792 - Illegal configuration for block XX/YDcm. The
cell < DCM> has the following precondition programming
<DLL_FREQUENCY_MODE>:<HIGH>. The cell < DCM>, has the following
precondition mode <CLKOUT_PHASE_SHIFT> defined as being used. The cell
< DCM>, must have the following programming <CLKOUT_PHASE_SHIFT>:<NONE>.
ERROR:Pack:1642 - Errors in physical DRC."
When using the DCM with Variable Phase Shift in High Frequency Mode in ISE 9.2.03 for Spartan-3E/-3A/-3AN?
This is an invalid error in MAP as it is possible to have variable phase shift in high-frequency mode in Spartan-3E/-3A/-3AN DCMs. In order to work around this issue, set the frequency mode to Low. The DCM will still function correctly in hardware as the Spartan-3E/-3A/-3AN DCMs have automatic frequency sensing.
This issue will be fixed in a later release of software.