The standard LDF file for ADSP21489 of VDSP put the input section seg_pmco only in the memory section of 16bit width.
The standard LDF file for ADSP21489 of CCES put the input section seg_pmco in the memory section of 16bit width and in the memory section of 48bit width. Is it correct?
It is correct. The linker only maps suitably qualified inputs, so there is no need to have conditional guarding of the inputs. The seg_pmco inputs from objects that are SW qualified will only be mapped to an SW qualified output segments for example.