Implementing a Line-Echo Canceller Using the Block Update and NLMS Algorithms on the TMS320C54x DSP
Texas InstrumentsThis document describes the implementation of a line echo canceller (LEC) on the TMS320C54x family of 16-bit fixed-point digital signal processors. Two different implementations of the adaptive transversal echo canceller filter are covered: block update and normalized least-mean square (also called stochastic gradient). Full assembler code is given for both examples.
TMS320C620x/C642x McBSP: UART (Rev. C)
Texas InstrumentsThis document describes how to use the multichannel buffered serial port (McBSP) in the Texas Instruments (TI) TMS320C6000™ (C6000™) digital signal processors (DSP) to interface to a universal asynchronous receiver/transmitter (UART). Descriptions of the hardware configuration and software routines necessary for proper functionality are included.
The McBSP is not capable of support
Power Supply Recommendations for DVD Receivers
Texas InstrumentsSelecting the optimal power supply for a non feed back digital amplifier can be challenging. Music is dynamic, so the power consumption is changing dramatically, from almost zero to maximum within a
General Guidelines: CDC7005 as a Clock Synthesizer and Jitter Cleaner (Rev. A)
Texas InstrumentsGeneral Guidelines: CDC7005 as a Clock Synthesizer and Jitter Cleaner
DN013 -- Programming output powers on CC1101 (Rev. A)
Texas InstrumentsDN013 -- Programming output powers on CC1101
CDCL6010 as a Frequency Synthesizer and Jitter Cleaner
Texas InstrumentsThis application report provides general guidelines for using the TI 1.8V LVDS/LVCMOS clock receiver CDCL6010 as a frequency synthesizer and/or jitter cleaner. This report reviews the basic device functionality and most efficient methods of use. The document also includes a detailed discussion of generating multiple frequencies with a common input frequency as well as a practical example of this
Implementing Shared Relocatable Buffers Using the TMS320 DSP Algorithm Standard
Texas InstrumentsThis application note presents several mechanisms supported by the TMS320 DSP Algorithm Standard (referred to as XDAIS) which can be employed by algorithm writers to assist application developers in optimizing their system?s performance and sharing of memory resources.The first mechanism is based on using statically allocated global data structures. The second mechanism is built on the concept
Matrix Multiplication With the TMS32010 and TMS32020 ( Contains Scanned Text)
Texas InstrumentsThis report is on matrix multiplication with the TMS32010 and TMS32020. Matrix multiplication is useful in applications such as graphics numerical analysis or high-speed control. Because of the high speed of the multiply/accumulate operations and fast data I/O both processors can multiply in microseconds large matrices with their sizes only limited by the internal data memory. Programs are inc
Color-Management LED Drivers Have a Bright Future
Texas InstrumentsColor-Management LED Drivers Have a Bright Future
TMS320C6000 McBSP as a TDM Highway (Rev. A)
Texas InstrumentsThis document describes how the multichannel buffered serial ports (McBSP) in the TMS320C6000™ digital signal processors (DSP) are used to communicate on a time-division multiplexed (TDM) data highway.
TDM provides multiple devices a time slot to perform data transfer. Thus multiple users operate various channels; however each user has a set of channel(s) assigned for transmission and re
Converting Analog Controllers to Smart Controllers with the TMS320C2000 DSPs
Texas InstrumentsModern applications demand faster, cheaper, and better motor control systems, and the performance demanded from embedded motor controllers is ever increasing. Programmable controllers offer the unique
CC2538/CC26xx Bootloader Interface (Rev. A)
Texas InstrumentsThis application report provides a brief overview on the serial bootloader that resides in ROM on the CC2538 and CC13xx/CC26xx devices. This document shows how the bootloader protocol can be used to perform basic operations like erasing and programming the flash of the devices. The device bootloaders support universal asynchronous receiver/transmitter (UART) and serial peripheral interface (SPI) as the protocol transportation layer. The example project is created in Visual Studio, Visual Studio Express 2010 and utilizes a library called Serial Bootloader Library to demonstrate an implementation of the serial bootloader protocol on Windows.
Implementing a UART Function with the 8-bit Interval Timer/Counter
Texas InstrumentsThis application report describes the implementation of a hardware/software universal asynchronous receiver tranmitter (UART) function on the MSP430x31x MSP430x32x and MSP430x33x families of 16-bit RISC-like mixed-signal processors using the integrated 8-bit interval timer/counter (8-bit T/C). The UART function described in this report is half-duplex event-driven and supports an 8N1 protocol u
TMS320C6201/6701 EVM: TMS320C6000 McBSP to Multimedia Audio Codec (Rev. A)
Texas InstrumentsThis application note describes how a multimedia audio codec can be interfaced to the TMS320C6201/C6701 DSPs. Although this application report uses the CS4231A audio codec as an example a part that is obsolete this application note can be used as a reference guide in interfacing similar audio codecs to the TMS320C6000? McBSP. Cirrus Logic offers the CS4235 CrystalClear? ISA audio device that p
Understanding Schmitt Triggers
Texas InstrumentsSN74LVC1GU04, SN74LVC1G57/58/9798/99, SN74AUP1G57/58/97-99, SN74AUP1T02/4/8/14/157/158/17, SN74SUP1T32, SN74A Understanding Schmitt Triggers
AM3715 GPMC
Texas InstrumentsThis article has been contributed to the TI Developer Wiki. To see the most recently updated version or to contribute, visit this topic at:<p> <a href=http://processors.wiki.ti.com/index.php/Am3715_g
Simple Filter Turns Square Waves into Sine Waves
Texas InstrumentsMany signals are digitally generated or transmitted as square waves. It is often desirable to convert these signals into sine waves. For example the 350Hz 440Hz 480Hz and 620Hz telephone supervisory tones transmitted over fiber-optics may appear at curb-side as square waves. To be used in telephone equipment it is desirable to convert the square waves into low-distortion sine waves. This can b
