Application notes from Texas Instruments

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Application Notes from Texas Instruments

Understanding the Davinci Resizer (Rev. B)

The image-scaling operation is one of the most commonly used video and imaging processing functions. The resizer hardware module in the DaVinci™ video processing subsystem (VPSS) provides the scaling capability in hardware therefore off-loading the system for other processing tasks. To achieve good video quality while maintaining good overall system performance a better understanding of th

AN-42 IC Provides On-Card Regulation for Logic Circuits (Rev. B)

Texas Instruments

This application report provides on-card regulation for logic circuits.

Using the TMS320C5402 DSK Sine Program and evmdsk54x.dll

Texas Instruments

The TMS320C5402 DSP starter kit (DSK) for Code Composer Studio? contains evmdsk54x.dll a Windows library and a header file evmdsk54xdll.h which allow you to use and write windows programs that can communicate with the TMS320C5402 DSK. An example program sine is included with Code Composer Studio to demonstrate howevmdsk54x.dll can be used. The example contains a both WIN32 graphical us

TMS320C6000 Expansion Bus Interface to PCI Bus Through PLX PCI9080 (Rev. A)

Texas Instruments

This application report describes how to interface the Texas Instruments (TI) TMS320C6000™ digital signal processor (DSP) expansion bus to the peripheral component interconnect (PCI) bus using the PCI9080 bridge chip from PLX Technologies.

This document contains:

A block diagram of the interface

Information required to configure the PCI9080

Timing diagrams illustratin

High Speed Clock Distribution Design Techniques for CDC 509/516/2509/2510/2516 (Rev. A)

Texas Instruments

The memory bandwidth of high performance microprocessors is increasing at a rapid rate and the future memory bandwidth requirements are expected to keep increasing. The bandwidth requirements of RAM will be satisfied in the near term by using Synchronous DRAM. The need to drive multiple DRAM chips at high speeds with low skew necessitates the use of clock distribution devices with Phase Locked Loo

Extended-Precision Complex Radix-2 FFT/IFFT Implemented on TMS320C62x (Rev. A)

Texas Instruments

The limited dynamic range of a fixed-point DSP causes accuracy problems in Fast Fourier Transform (FFT) calculation. This is due to quantization and the scaling that has to be applied to prevent output overflow. Hence there is a need to perform the calculations in extended precision especially for large FFT sizes. Highly optimized extended-precision assembly routines for the FFT and its inverse

EDMA v3.0 (EDMA3) Migration Guide for TMS320C645x DSP

Texas Instruments

The TMS320C645x devices introduce a newly designed Enhanced Direct Memory Access (EDMA3). The EDMA3 has many new features that improve system performance and enhance debugging capabilities. This docum

Digital Stethoscope Implementation on TMS320C5515 DSP Medical Development Kit (Rev. A)

Texas Instruments

The medical development kit (MDK) provides a development platform to TI medical customers third parties and other developers. This application report focuses on the C5515 MDK; however the analog front ends that are included can also be used with other platforms.

Please be aware that an important notice concerning availability standard warranty and use in critical applications of Texas Ins

TRF7960A Firmware Design Hints

Texas Instruments

This application report is a reference for the firmware developer using the TRF7960A in conjunction with microcontroller (for example an MSP430 or ARM device). This document supersedes TRF796x Software Design Hints (SLOA153).

Using the TPS5430 As An Inverting Buck Boost Converter (Rev. A)

Texas Instruments

The wide input voltage range SWIFT™ dc/dc converters are used typically as step-down converters where the derived output is a positive voltage less than the input voltage source. In some cases it may be required to generate a negative voltage from the input voltage source. In such instances it is possible to configure the TPS5430/20/10 devices in an inverting buck-boost topology where the outpu

Wave Digital Filtering Using the MSP430

Texas Instruments

Digital filtering is an integral part of many digital signal processing algorithms. Digital filters are characterized as either recursive [infinite impulse response (IIR)] or non-recursive [finite impulse response (FIR)] filters. IIR filters require a smaller order for the same set of specifications compared to FIR filters, while FIR filters provide a linear phase property. However, IIR filters, if not designed properly, tend to be unstable and use coefficients that are difficult to implement. This application report discusses the design of a certain type of IIR digital filter with excellent stability properties, known as a Lattice Wave Digital Filter (LWDF), given a set of analog filter specifications. An elementary knowledge of filters is sufficient to understand the design of LWDF as discussed in this report. The complete design of the basic filters (low-pass, high-pass, and band-pass) is given with examples. Code that implements these LWDFs on the MSP430 CPU is provided with this report.

TPS63020Q Pin FMEA

Texas Instruments

TPS63020Q Pin FMEA TPS63020Q

TSB12LV01B/TSB41AB3 Reference Schematic (Rev. A)

Texas Instruments

This application report describes the electrical connections between the Texas Instruments TSB12LV01B and TSB41AB3 for common modes of operation. Use this document in conjunction with the TI application report Recommendations for PHY Layout (SLLA020) to successfully design a 1394 system.The TSB12LV01B is a high-performance general-purpose IEEE 1394-1995 link-layer controller (LLC) with the

Understanding the ADS1252 Input Circuitry

Texas Instruments

This application report describes the ADS1252?s input circuit to better illustrate the loading seen by the signal source.

U-514 Using the bq2010 - A Tutorial for Gas Gauging

Texas Instruments

The bq2010 Gas-Gauge IC is a complete battery-monitoring product for NiMH and NiCd batteries. This tutorial introduces the bq2010. The tutorial should be used with the bq2010 data sheet when designing with or evaluating the bq2010. It describes capacity monitoring compares Unitrode's gas-gauge solutions to microprocessor-based implementations describes device operation in general terms and addr

RF and IF amplifiers with op amps

Texas Instruments

DN303 -- Cleanup of Installed PC Tools

Texas Instruments

DN303 -- Cleanup of Installed PC Tools

TMS320C6747/45/43 Power Consumption Summary

Texas Instruments

This application report discusses the power consumption of the Texas Instruments C6747/45/43. Power consumption on the C6747/45/43 devices are highly application-dependent so a spreadsheet is provided to model power consumption for a user's application. To obtain good results from the spreadsheet realistic usage parameters must be entered. The low-core voltage and other power design optimization

Connecting PGA900 Instrumentation Amplifier to Resistive Bridge Sensor

Texas Instruments

Understanding the input and output limitations of an instrumentation amplifier (IA) is important in interfacing a resistive bridge sensor to the PGA900. Adjusting the common mode voltage of the input

TPS5625 Working with TMS320C6201 Applications

Texas Instruments

This application report describes a design example that uses fast TPS5625 hysteretic controller and low-cost TL5001A PWM controller installed in SLVP105 and SLVP101 EVMs for a TMS320C6201 DSP application. This design converts 5 V to 2.5 V at 8 A and 3.3 V at 3 A for high-current DSP applications.