NXP S32R RADAR Signal Compression Features and Guidelines

Overview

This application note provides detailed guidelines for using signal compression features in NXP S32R27x and MPC577xK RADAR microcontrollers. It describes how the embedded Signal Processing Toolbox (SPT) and Programmable Direct Memory Access (PDMA) enable various compression formats (including CP4, CP6, CP8, and CP16) with ratios ranging from 2.8:1 to 6:1. The document outlines the signal processing flow from data acquisition via MIPI-CSI2 or ADC to FFT processing, demonstrating how compression minimizes system RAM requirements while maintaining high Signal-to-Noise Ratio (SNR). It includes a practical programming procedure for a 4-channel use case, covering windowing, Radix 4 FFT commands, and memory management using Matlab-generated coefficients and SPT command sets.

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