TMS320C6748: Can the CVDD be 1.2V when using C6748 456MHz version, but only run at 200MHz？

Hi,

    According to "TMS320C6748 Fixed- and Floating-Point DSP (Rev. E)", the CVDD should be 1.3V when using 456MHz versions.

    456MHz version C6748 is used in our products, the DSP runs at 456MHz and 1.3V is supplied for CVDD.

    Now, we want to low down the CPU Freq to 200MHz and adjust the CVDD to 1.1V.

    Can we adjust the RVDD to 1.2V, since the DSP now only runs at 200MHz?

    Or

    The RVDD should be set at 1.3V, since it's a 456MHz version chip, even if it only runs at 200MHz?

    Thank you.

Frank