Hercules SCI With DMA
Texas InstrumentsThis application report summarizes the necessary steps to setup the direct memory access controller (DMA) to transfer data between the SCI and the data RAM of the microcontroller freeing the CPU during the entire message transmission. Detailed code examples are provided as guidelines for the different setup steps.
Thermal Derating Curves For Logic-Products Packages (Rev. B)
Texas InstrumentsThermal metrics such as qJA and qJC are used to compare thermal performance of plastic integrated circuit (IC) packages. The thermal conductivity of all materials of the IC packaging and of the test board affect the thermal resistance values reported by semiconductor manufacturers. Recent advancements in reporting thermal data include standard test-board designs. Texas Instruments (TI) has publi
SN65DSI83, SN65DSI84, and SN65DSI85 Hardware Implementation Guide (Rev. A)
Texas InstrumentsSN65DSI83, SN65DSI84, SN65DSI85 SN65DSI83, SN65DSI84, and SN65DSI85 Hardware Implementation Guide /HPA/ICP/CCI-Consumer_Computer_IF
DN-71 Using Copper PCB Etch for Low Value Resistance
Texas InstrumentsCurrent sensing in power supplies and motor controls demand the use of a very low value resistor. Each application varies in need for resistance value power rating size form factor inductance temperature coefficient and accuracy. To meet some of these applications the copper of a printed circuit board (PCB) can be utilized but has some distinct limitations. This design note provides design
Buck Regulator Topologies for Wide Input/Output Voltage Differentials
Texas InstrumentsBuck Regulator Topologies for Wide Input/Output Voltage Differentials
Support HDMI 1.3 12-Bit Deep Color With the TMDS341A
Texas InstrumentsSupporting HDMI 1.3 12-bit deep color with the TMDS341A
An All-Digital Automatic Gain Control ( Contains Scanned Text)
Texas InstrumentsThis report describes an all-digital implementation of an AGC on a TMS320C17 DSP. The AGC is designed specifically for modem applications.- The first section provides an overview of modem receiver structure and implementation.- The second section discusses the AGC block diagram and the motivation for using an AGC in a modem receiver.- The third section covers the AGC hardware and s
Impact of TMS470R1x ZPLL Jitter on CAN Communication (Rev. A)
Texas InstrumentsThe first section describes the impact of the clock jitter introduced by the analog phase−locked loop module (ZPLL) on the system clock (SYSCLK) and the peripheral clock (ICLK). In the second section the resulting impact on the CAN communication is explained.
Optimizing the UCC28019A to Avoid Audible Noise
Texas InstrumentsThe UCC28019A and its predecessor the UCC28019 are eight-pin active power factor correction (PFC) controllers that use the boost topology and both operate in continuous current conduction mode.
AN-1729 DP83640 IEEE 1588 PTP Synchronized Clock Output (Rev. D)
Texas InstrumentsThe DP83640 provides a highly precise low-jitter clock output that is frequency-aligned to the masterIEEE 1588 clock and can be phase-aligned as well. Empirical testing shows very low jitter (less than 1 nspeak-to-peak and standard deviation when using the FCO source) and precise phase alignment. Whiletest results show that the FCO has superior long term jitter performance using the PGM as
Dual Power Supply Recommendations for the TMS320C206
Texas InstrumentsThis document describes two options used to supply power to the Texas Instruments (TI)(tm) TMS320C206 digital signal processor (DSP). The TMS320C206 DSP requires 3.3V for the CPU and 5.0V for the I/O. The first solution applies when a design already has a regulated 5.0V power supply and requires only a 3.3V (LDO) Low Dropout regulator. The second solution applies an unregulated voltage input t
OMAP-L1x/C674x/AM1x SOC Architecture and Throughput Overview
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://wiki.davincidsp.com/index.php/OMAP-L1x/C674
Hardware auto-identification&software auto-configuration for the TLV320AIC10 DSP Codec - a "plug-and-play" algorithm
Texas InstrumentsThe analog interface circuit (AIC), also called a modem Codec, is a complete data acquisition system on a chip for general-purpose telephony/speech applications such as: modem analog interface, voice-band audio processing, noise cancellation/suppression, hands-free communication, security voice systems, tone generation, echo cancellation, voice-over-internet protocol (VoIP), and industrial process control. The AIC is normally interfaced to a digital signal processor (DSP). This approach has a number of advantages and cost-saving benefits that cannot be realized with traditional Codec analog interfacing. The benefits include:
- lower cost,
- simple interface design and fewer components,
- greater system reliability due to fewer components,
- lower power consumption,
- higher performance, and
- high programmability.
Troika and Synoris Output Selection Filter Guide
Texas InstrumentsTroika and Synoris Output Selection Filter Guide TPS65250, TPS65251, TPS65252, TPS65253
U-120 A Simplified Approach to DC Motor Modeling for Dynamic Stability Analysis
Texas InstrumentsWhen we say that an electric motor is a device that transforms electric power into mechanical power we say two things. First that the motor is ?and behaves as ?a transformer. Second that it stands at the dividing line between electrical and mechanical phenomena. In the case of permanent magnet motors this power transformation works in both directions so that the electrical impedance depends on
Wideband Complementary Current Output DAC Single-Ended Interface
Texas InstrumentsHigh-speed digital-to-analog converters (DACs) most often use a transformer-coupled output stage. In applications where this configuration is not practical, a single op amp differential to single-end
