Is there any limitation on the numbers of channels which can be processed on ADSP-2156x Accelerators?
No. Theoretically, there is no limit on number of channels the accelerators can process in Auto Configuration Mode(ACM). The accelerators on ADSP-2156x have a mode known as Auto Configuration Mode(ACM). When the accelerator is operated in this mode, it keeps processing the channels untill it sees a channel with its chain pointer value as '0'(NULL).