Procesador de señal digital 132-BQFP -40 a 85
PDF, 52 Kb, Archivo publicado: oct 1, 1994
This document presents a forward error-correction scheme complying with the US Digital Cellular (USPC) standard. The scheme uses a generalized Viterbi algorithm to enhance performance of the USPC voice channel decoder. The application is implemented on a TMS320C53 fixed-point DSP. Using the algorithm on the TMS320C53 DSP does not increase the computational overhead when compared with a standard
PDF, 119 Kb, Archivo publicado: jul 1, 1997
In 1995 several teams of EFREI students submitted a project to the Texas Instruments DSP Challenge. This paper describes the adventure of one project which passed with success the European semi-finals to go and participate to the worldwide final in May, 1996 in ATLANTA.The winning project deals with the Digital Signal Processing (hardware and software) associated with a new class of a Digital
PDF, 122 Kb, Archivo publicado: jun 1, 1996
Using a DSP to perform multi-channel DTMF decoding can decrease PBX system cost while increasing system performance and flexibility. This document presents an improved technique for 32-channel DTMF decoding using the TMS320C5x 16-bit fixed-point DSP. The appendix contains the assembler source code for this application.
PDF, 161 Kb, Archivo publicado: marzo 1, 1995
This document describes the system architecture of the TMS320 digital signal processor (DSP) PCMCIA media card and its operation. Operational examples are provided for setting up the DSP, for loading and executing single and multiple algorithms, and for resetting the DSP. An in-depth discussion of the common and attribute memory, bus arbitration, DSP/host communication and FPGA is provided.
PDF, 199 Kb, Archivo publicado: abr 1, 1993
The power supply current requirements for the 16-bit fixed-point TMS320C5x digital signal processor (DSP) depend not only on the device functionality, but also on the system parameters. This document describes the techniques for analyzing the system and device operating current levels. Once these factors are determined the power dissipation can be calculated followed in turn by the device thermal
PDF, 1.6 Mb, Archivo publicado: marzo 1, 1994
This book provides an overview of the TMS320C5x 16-bit fixed-point digital signal processor (DSP) family and its use in telecommunication applications. Each section provides application specific information about the following topics: digital cell systems, speech synthesis, error-correction coding, base-band modulation and demodulation, equalization and channel estimation, speech and character rec
PDF, 169 Kb, Archivo publicado: jul 1, 1995
The TMS320C5x high-speed 16-bit fixed-point DSP allows considerable flexibility to meet a wide range of clock requirements. This document provides information on crystal and ceramic resonators, their frequency characteristic, a background on oscillators, and the type of oscillator circuit to use on the TMS320C5x. Also included are design considerations for external components and solutions for com
PDF, 268 Kb, Archivo publicado: jul 1, 1994
Due to its discrete nature DSPs represent variables and performs arithmetic functions with a finite word length. This produces three effects: the selection of filter transfer functions is quantized with filter poles and zeros existing only at specific locations in the z plane; the input is quantized; and noise is introduced from DSP multiplication and division operations. This document shows how
PDF, 168 Kb, Archivo publicado: nov 1, 1994
Four steps are required to set the TMS320 DSP interrupts: create a interrupt service routine initialize the vector table and set the memory map enable the interrupts in the CPU and enable the interrupt sources. This document shows how to set the interrupts in C C callable assembly or in-line C. Sample C code segments are provided. The appendix gives complete examples for setting interrupt vec