PDF, 74 Kb, 档案已发布: Jan 11, 2008
This Application Report has been contributed to the TI DaVinci & OMAP Developer Wiki. To see the most recently updated version or to contribute, visit this topic at http://wiki.davincidsp.com/index.php?title=GStreamerGStreamer is a pipeline-based multimedia framework that allows you to create a variety of media-handling componen
PDF, 1.2 Mb, 档案已发布: Sep 26, 2007
This document describes how to configure Codec Engine-based audio/video applications on the DM6446 (DaVinci) for use in a system that has less than the 256 MB of DDR2 memory that the evaluation board provides. Specifically, we present steps for shrinking memory requirements down to 64 MB, but the principles apply to any amount of DDR2.
PDF, 136 Kb, 档案已发布: May 8, 2007
The transmission of video sequences is enabled by compressing the video content with different video encoding algorithms at the source and decoding the stream at the destination. The compression process discards part of the original information and decreases the video quality of the decoded stream.Measuring the video quality is measuring how close the decoded stream is to the original stream.
PDF, 249 Kb, 修订版: A, 档案已发布: Sep 11, 2007
This application report describes how to build a motion JPEG demo running on Texas Instruments DM6446 processor leveraging the JPEG codec combo and XDC tools provided with the DM6446 DVEVM/DVSDK package. The demo is derived from the motion JPEG demo running on the TI DM642 processor. Some tips on how to migrate legacy code from TI DSP only based platform such as DM642 to the new system-on-chip (So
PDF, 31 Kb, 档案已发布: Jul 20, 2010
This application report is intended to provide an overview of changes necessary to upgrade a DM6446-based design from the 513 MHz or 594 MHz device to an 810 MHz device. The changes listed below are required by the 810 MHz device for proper operation; other system changes may be required to accommodate new speeds or capabilities in the system.
PDF, 202 Kb, 修订版: A, 档案已发布: Apr 23, 2008
PDF, 1.8 Mb, 档案已发布: Sep 28, 2006
The DaVinciв„ў platform offers a complete solution for many multimedia applications requiring advanced video codecs. The solution consists of a DM644x dual core architecture that offers high performance along with a rich mix of peripherals and a complete software environment. This environment includes inter-processor communication software via DSP/BIOSв„ў Link, and a codec framework that e
PDF, 398 Kb, 档案已发布: Jul 25, 2007
The TMS320DM6446 device has a rich set of peripherals; however, many of these peripherals are multiplexed with each other, and only one is available at a time.Perhaps the best example of a multiplexing scenario found on the TMS320DM6446 device is the asynchronous external memory interface (EMIFA). The pins that make up this interface are multiplexed to service NAND flash, NOR flash, CF, hard
PDF, 709 Kb, 档案已发布: Jul 30, 2007
The typical development environment for the TMS320DM644x EVM devices, also known as the digital video evaluation module (DVEVM), involves connecting a host workstation to the target EVM. This environment allows for the bulk of the development to be done in the more powerful host hardware and transferred quickly (via connection medium) to the target EVM for testing.The most popular target-host
PDF, 2.1 Mb, 档案已发布: Jul 30, 2007
The TMS320DM6446 device includes an ARM core which can run the very popular LinuxВ® operating system. One of Linux strengths is its open source approach enabling developers a wide range of development tools from free open source debugger applications such as ddd to sophisticated IDE-based debuggers sold by independent software vendors such as MontaVista'sВ® DevRocketв„ў and Green Hills&r
PDF, 614 Kb, 档案已发布: Jun 27, 2007
This application report provides a brief video basics overview. The Texas Instruments (TI) TMS320DM6446/DM6443 DaVinciв„ў system-on-chip (SoC) devices are capable of YCbCr or red, green, blue (RGB) digital video output; YCbCr outputs can interface with a video encoder or RGB outputs can interface with LCD parts. This document details these two solutions, and provides software drivers and an ex
PDF, 720 Kb, 档案已发布: Jul 20, 2007
The TMS320DM6446 device can be configured as a universal serial bus (USB) host or slave device. When configured as a host, it can support USB mass storage devices such as USB flash drives which are widely used today to transfer pictures, music, and documents between PCs, laptops, and portable devices; however, this support is not enabled by default. This document outlines the necessary steps for e
PDF, 186 Kb, 修订版: B, 档案已发布: Dec 17, 2008
Video signals captured directly from charge-coupled device (CCD) cameras naturally have interlaced effects and are in a 4:2:2 interleaved format. They typically need to be converted to a 4:2:0 planar format before being encoded because most video compression standards accept input only in 4:2:0 format. It is better to reduce or remove the interlaced artifacts in the original video signal when fe
PDF, 130 Kb, 修订版: A, 档案已发布: Feb 26, 2008
This application report describes how to create an eXpressDSPв„ў Algorithm for Digital Media (XDM) compatible audio encode example on the TMS320DM6446 processor using the eXpressDSP Components (XDC) tool. XDM is an extension of TI eXpress DSP Algorithm Interface Standard (xDAIS).The example consists of:The LinuxВ® application code running on the ARM side of DM6446The d
PDF, 282 Kb, 修订版: A, 档案已发布: Jun 27, 2007
PDF, 219 Kb, 档案已发布: Dec 21, 2006
This application report describes two related pieces of software that are used together to download an application over the DM644x UART0 serial interface and run it out of the ARM internal memory. The discussion begins with a description of a host application that executes on a user’s PC, and includes a description of how to interface to the ROM boot loader of the DM644x device. The discussion of
PDF, 154 Kb, 修订版: G, 档案已发布: Jun 16, 2008
This application report contains implementation instructions for the DDR2 interface contained on the TMS320DM644x digital signal processor (DSP) device. The approach to specifying interface timing for the DDR2 interface is quite different than on previous devices.The previous approach specified device timing in terms of data sheet specifications and simulation models. The system designer was
PDF, 243 Kb, 档案已发布: Dec 3, 2005
This Document describes migrating from the Texas Instruments TMS320C64x digital signal processor (DSP) enhanced direct memory access (EDMA2) to the TMS320DM644x Digital Media System-on-Chip (DMSoC) EDMA3. This document summarizes the key differences between the EDMA3 and the EDMA2 and provides guidance for migrating from EDMA2 to EDMA3.
PDF, 3.4 Mb, 修订版: A, 档案已发布: Dec 15, 2008
Currently, the DaVinciв„ў evaluation module (DVEVM) supports three boot modes: the DVEVM can boot from NOR (default), NAND, or universal asynchronous receiver/transmitter (UART). NOR Flash offers the advantages of one-byte random access and execute-in-place technology. NAND Flash is not as easy to work with since it requires Flash Translation Layer (FTL) software to make it accessible; however
PDF, 66 Kb, 修订版: B, 档案已发布: Aug 16, 2010
This document discusses the power consumption of the Texas Instruments TMS320DM6446 and TMS320DM6443 digital media System-on-Chip (DMSoC). Power consumption on the DM6446/3 devices is highly application-dependent, so spreadsheets are provided to model power consumption for a user's application. To get good results from the spreadsheet, realistic usage parameters must be entered. The low-core volta
PDF, 323 Kb, 修订版: A, 档案已发布: Jun 27, 2007
PDF, 101 Kb, 档案已发布: Apr 8, 2008
This document discusses the power consumption of the Texas Instruments TMS320DM6441 digital media System-on-Chip (DMSoC). Power consumption on the DM6441 device is highly application-dependent, so a spreadsheet is provided to model power consumption for a user’s application. To get good results from the spreadsheet, realistic usage parameters must be entered. The low-core voltage and other power d
PDF, 159 Kb, 修订版: A, 档案已发布: Sep 10, 2009
This application report describes two related pieces of software that are used together to boot the ARM core of the DM644x via the universal asynchronous receiver/transmitter (UART0) serial interface. Additionally, this software allows you to write the needed files to a NAND or NOR flash device, connected to the DM644x AEMIF, such that the ARM core can boot from these external memories. The softwa
PDF, 47 Kb, 档案已发布: Jul 20, 2010
This application report describes ROM bootloader (RBL) differences between silicon revision 2.1 and 2.3 of the TMS320DM644x Digital Media System-on-Chip (DMSoC).
PDF, 335 Kb, 修订版: A, 档案已发布: Jun 27, 2007
PDF, 414 Kb, 档案已发布: Jul 6, 2006
While On Screen Display (OSD) functionality became prevalent as a cheaper alternative to using buttons/knobs to control television settings, in today's society, it seems like everyday a new gadget comes out which uses OSDs.Imagine a video phone or set-top application for a minute; both of these applications require video overlaid with some graphics OSD, and may require some blending between v
PDF, 246 Kb, 档案已发布: Nov 5, 2007
This application report describes device considerations for migrating a design based on a TI TMS320DM6446 Digital Media System-on-Chip (SoC) to one based on a TI TMS320DM6437 Digital Media Processor (DMP). These two devices have many similarities; they both contain the TMS320C64x+в„ў DSP CPU core, feature video frontand back-end processing capability, and a similar mixture of memory and other periph
PDF, 311 Kb, 档案已发布: Nov 17, 2008
This document describes considerations for migration from Texas Instruments TMS320DM6446 Digital Media System-on-Chip (DMSoC) to the TMS320DM6467 DMSoC. Both devices feature a dual-core architecture utilizing a high-performance TMS20C64x+в„ў Digital Signal Processor (DSP) core and an ARM926EJ-S central processing unit (CPU) core. While the TMS320DM6446 features video front-end and back-end pro
PDF,
656 Kb, 档案已发布:
Apr 3, 2009One of the recent significant developments in ultrasound is the emergence of portable and handheld ultrasound machines and their rapid acceptance in the market place.Because of their power efficiency and high performance digital signal processor (DSP) based devices have been increasingly used as the main processing engine in these portable and hand carried units.
This application report dis
PDF, 72 Kb, 修订版: A, 档案已发布: Mar 10, 2010
PDF, 108 Kb, 修订版: A, 档案已发布: Jan 4, 2007
PDF, 469 Kb, 修订版: B, 档案已发布: Jul 17, 2008
The image-scaling operation is one of the most commonly used video and imaging processing functions. The resizer hardware module in the DaVinciв„ў 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
PDF, 209 Kb, 修订版: A, 档案已发布: Jul 23, 2008
The Preview Engine block in the DaVinci video processing sub-system (VPSS) provides some critical functions for image and video processing. These functions, if implemented in software, require a significant number of computations in terms of million instructions per second (MIPs). By offloading these functions, the valuable MIPs can be used for more differentiating tasks, such as video compression
PDF, 1.3 Mb, 修订版: A, 档案已发布: May 27, 2008
Building a Small Embedded Linux Kernel Example Application Report
PDF, 179 Kb, 档案已发布: Nov 24, 2008
PDF, 1.2 Mb, 修订版: A, 档案已发布: Jul 8, 2009
PDF, 969 Kb, 档案已发布: Sep 24, 2009
This application report describes the device differences to be taken care for running the C64x+™ video codec software on different C64x+ based platforms. This document assumes that the codec software is developed for the C64x+ digital signal processor (DSP) core. As many TI platforms have a C64x+ DSP this document gives the details for running the standalone codec software on a C64x+ platfo
PDF, 292 Kb, 修订版: A, 档案已发布: Aug 21, 2008
This application report summarizes the key differences between the enhanced direct memory access (EDMA3) used on C64x+в„ў DSP devices and the EDMA2 used on TMS320C64xв„ў DSP devices, and provides guidance for migrating from EDMA2 to EDMA3.
PDF, 310 Kb, 修订版: A, 档案已发布: Oct 20, 2005
This document describes migration from the Texas Instruments TMS320C64xв„ў digital signal processor (DSP) to the TMS320C64x+в„ў DSP. The objective of this document is to indicate differences between the two cores and to briefly describe new features. Functionality in the devices that is identical is not included. For detailed information about either device, see the TMS320C64x/C64x+ DSP
PDF, 93 Kb, 修订版: A, 档案已发布: Jul 17, 2008
This application report motivates the way the DDR high-speed timing requirements are now going to be communicated to system designers. The traditional method of using data sheet parameters and simulation models is tedious. The system designer uses this information to evaluate whether timing specifications are met and can be expected to operate reliably.Ultimately, the real question the hardwa
PDF, 125 Kb, 档案已发布: Apr 15, 2009
PDF, 814 Kb, 修订版: G, 档案已发布: Jul 27, 2017
As modern bus interface frequencies scale higher, care must be taken in the printed circuit board (PCB) layout phase of a design to ensure a robust solution.
PDF, 535 Kb, 档案已发布: Oct 6, 2011
The TMS320C6000™ Digital Signal Processors (DSPs) have many architectural advantages that make them ideal for computation-intensive real-time applications. However to fully leverage the architectural features that C6000™ processors offer code optimization may be required. First this document reviews five key concepts in understanding the C6000 DSP architecture and optimization. Then
