TDM Channels of will be split by TP_SSR and FIR taps (for each channel) will be split by TP_CASC_LEN. Each part is sent to a specific kernel via its corresponding RTP port.
FIR TDM graph class provides a helper method: extractTaps(const std::vector<TT_COEFF>& taps, unsigned int kernelNo) to get coefficients for a given kernel. For more details, refer to: API Reference Overview.