This information is provided to assist those designers who are experienced with the DCM and PLL Architecture Wizards. It highlights the differences between the old and new cores.
Migrating to the Vivado Design Suite
For information about migrating to the Vivado® Design Suite, see ISE to Vivado Design Suite Migration Guide (UG911).
For example, a user has a requirement of two output clocks with clk_out1
as 120 MHz and clk_out2 as 150MHz and a separate phase/duty cycle
requirement for two clocks. In Non-Versal, the user will pass a value for each clock
attribute, whereas, in Versal, the parameters must be provided as a
string for all the output clocks when using batch mode. For example, if you want to feed the
requested clock frequencies for the clocks, the parameter
CLKOUT_REQUESTED_OUT_FREQ must be assigned a value of 120, 150, 100, 100,
100, 100, and 100. (100 is the default value) It is the combination of all output
frequencies from 1 to 7. If the string does not contain 7 values, it fills the initial
frequencies, and for the rest, it takes the default value. Similarly, for all other
parameters of CLKOUT_DRIVES, CLKOUT_DYN_PS, CLKOUT_MATCHED_ROUTING,
CLKOUT_REQUESTED_DUTY_CYCLE, CLKOUT_REQUESTED_PHASE, CLKOUT_USED, and
CLKOUT_PORT, you must pass the respective values as a list of values in
batch mode instead of a single value for each clock.
PRIMITIVE, which can be “MMCM, PLL, Auto” in Non-Versal,
can be mapped to the PRIMITIVE_TYPE parameter.
OVERRIDE_MMCM, which can set to “True/False” should map to the
OVERRIDE_PRIMITIVE parameter.