FFTLIB Release Notes

Version: 09.02.00.04

Introduction
Licensing
Getting Started
Documentation
What's New
Upgrade and Compatibility Information
Device Support
Validation Information
Fixed Issues
Deprecation
Known Issues
Technical Support
Package Versioning

Introduction

The FFTLIB package consists of the Texas Instruments optimized kernels for FFT.

Licensing

The licensing information of this library and a complete manifest along with export control information is detailed here [HTML].

Getting Started

The FFTLIB User Guide [USER_GUIDE] provides the documentation and references necessary to begin development on TI's platforms.

Documentation

Refer to following documentation for further details:

FFTLIB User Guide	Build instructions, API Guide	[USER_GUIDE]
Software Manifest	Licenses, terms of use	[HTML]

What's New

C7x+MMA support

Only supported on 512-bit C7x variants

CMake-based build system

Starting 09.02.00, please use CMake to build library; please see user guide for more details

Examples

Example folder is TBD; intended to demonstrate how to call the kernel with minimal code

FFT

Support for 16-bit and 32-bit signed complex input/output
Support for real and imaginary parts of data to be in either interleaved or non-interleaved format. Optimal performance assumes interleaved data format
Support for FFT sizes from 64 through 8192. FFT sizes are assumed to be powers of 2
Support for batch processing of multiple FFTs in one kernel call. For optimal performance, input data and output data for the entire batch, and twiddle factor data are assumed to fit in L2 memory
FFTLIB_FFT_dftSmall_ixX_cxX_oxX
FFTLIB_FFT_dftLarge_ixX_cxX_oxX
FFTLIB_FFT_highRadixDecompositions_ixX_cxX_oxX
FFTLIB_FFT_fft_ixX_cxX_oxX
FFTLIB_fft1dBatched_i16sc_c16sc_o16sc [C7x only]
FFTLIB_fft1dBatched_i32fc_c32fc_o32fc [C7x only]
FFTLIB_fft1d_i16sc_c16sc_o16sc [C7x only]
FFTLIB_fft1d_i32f_c32fc_o32fc [C7x only]
FFTLIB_ifft1d_i32fc_c32fc_o32fc [C7x only]
FFTLIB_ifft1d_i32fc_c32fc_o32f [C7x only]
FFTLIB_fft1d_i32fc_c32fc_o32fc [C7x onlyFFTLIB_fft1d_i32fc_c32fc_o32fc [C7x only]
Utility functions (with suffixes _getSizes) to compute sizes required for data and twiddle factor buffers
Utility functions (with suffixes _twGen) to compute relevant DFT matrices and twiddle factors

C7x+MMA DFT building blocks

16-bit, interleaved/non-interleaved, any FFT_SIZE, any BATCH_SIZE: works
32-bit, interleaved/non-interleaved, any FFT_SIZE, any BATCH_SIZE: works

C7x only FFT building blocks

16-bit, interleaved, 64 < FFT_SIZE < 8192, BATCH_SIZE = 1,2,4,8,16,32,64: works
32-bit, interleaved, 32 < FFT_SIZE < 8192, BATCH_SIZE = 1,2,4,8,16,32,64: works

Upgrade and Compatibility Information

File

Change description

User application change required

User application recompile required

Device Support

SoC	Host (OS)	Target (OS)	Test Platform
C7x, MMA	No OS	No OS

Validation Information

This release was built and validated using the following tools:

Build Tools (NOT included in FFTLIB):

C7x CGT C7000-CGT-4.1.0 LTS

Fixed Issues

Deprecation

Known Issues

None

Technical Support

For technical support, please post your questions on TI E2E Forum for Automotive ADAS SoCs.

For additional assistance, contact local TI Field Application Engineer

Package Versioning

Each package version is composed of 4 period-delimited numbers - represented here by the letters M, m, p and b [M.m.p.b]. The table below provides a descriptive reference regarding package version numbering.

Digit	Meaning	Description
1 (M=Major)	Major revision	Incremented when the new version is substantially different from the previous For example, a new module added or an existing module's algorithm significantly altered.
2 (m=minor)	Minor revision	Incremented when the new version has changed but not in a major way. For example, some minor changes in the API or feature set.
3 (p=patch)	Patch number	Incremented for all other source code changes. This include any packaging support code.
4 (b=build)	Build number	Incremented for each release delivery to CM. Reset for any change to M, m or p