Super Sample Rate - Operation Mode - 2024.2 English - XD160

Vitis Libraries

Document ID
XD160
Release Date
2024-11-29
Version
2024.2 English

TDM FIR can be configured to operate in SSR Mode using TP_SSR template parameter. The mode will create an array of TP_SSR kernels and create the TP_SSR amount of the input and output ports.

When SSR mode is use, i.e. when TP_SSR > 1, Input Samples, and therefore, corresponding TDM Channels will be split over multiple parallel paths.

As a result, each SSR path will operate on a fraction of the workload, i.e. each path will operate on TP_TDM_CHANNELS / TP_SSR number of TDM Channels.

Input data samples are distributed across the input paths in a round-robin, sample-by-sample mechanism where each input path processes a fraction of the input samples, i.e. TP_INPUT_WINDOW_VSIZE / TP_SSR. More details in: Super Sample Rate - Sample to Port Mapping.