dsp microprocessor

1 PCM InterfaceFor different digital audio subsystems, there are several microprocessor or interfaces used for digital conversion between DSP and audio devices. The simplest audio interface is the PCM (pulse Coding Modulation) interface, which consists of Clock Pulse (bclk), frame synchronous signal (FS), and receive data (DR) and data transmission (dx. On the rising edge of the FS signal, the data is trans

1 PCM InterfaceFor different digital audio subsystem, there are several interfaces between microprocessor or DSP and audio devices for digital conversion. The simplest audio interface is the PCM (Pulse coded modulation) interface, which consists of a clock pulse (BCLK), a Frame sync signal (FS), and a receive data (DR) and send data (DX). At the rising edge of the FS signal, the data transfer begins with th

Original article from: http://www.autooo.net/autooo/electronic/case/cpu-dsp/2007-10-28/33644_4.htmlauthor: Chen Kai Wu jinhong Yunbo Release Date: 06:44:03 Source: China Electronic Technology Group Corporation Reference: The lpc900 flash single-chip microcomputer can be encapsulated from 8-pin to 28-pin to meet various application requirements with limited cost and PCB space and high performance and reliability, high speed (6 times higher than tradit

device, close ();(OS API: is an application interface ).Memory refers to memory 8. Common embedded operating systems:Embedded Linux: UClinux (no MMU: You can convert a virtual address (Logical Address) into a physical address (absolute address): No: RT-Linux: RealtimeVxWorks: Wind River (not open source)WindowsPalm OSSymbian: NokiaIPhone: AppleAndroidUC/OS II: preemptible hardware and real-time kernel, open-source,Tizen: sumeda Intel 9. embedded processors are equivalent to CPUs.Microcontrolle

-Gates is used by enterprises to solve the problem of producing vertical hardware models, c2h is written in different ways, it uses the production assistant to unload and increase the processing efficiency of the processing tool on the microprocessor using the C language, this method can solve an important issue: 1. similar to the prototype of the computation that really accelerates the computation, or the C statement that has been written on a comm

Label: Ar data sp c time algorithm r Application Programming The essence that spld, CPLD, and FPGA can implement any logic is that any logic can be expressed (or approached) by polynomials ). Polynomials are nothing more than multiplication and addition operations. And exactly, match the door, or match the door plus. FPGA extended architecture: the on-chip programmable system. There are two types: one is the pure FPGA architecture, and the other is the system. Generally, the built-in multipl

Yesterday, Ti made a shock to the electronics industry, announced the latest release of Sitara am335x arm Cortex-A8 microprocessor, the bulk price of only 5 dollars, at the same time, it also launched an easy-to-use open-source hardware platform and a free software development kit at an ultra-low price of $89. Both prices can be said to have broken the current industry's gaming rules. This message was sent by Chang Xu on Weibo, attracting an exclama

The biggest difference between a photoelectric mouse and a mechanical mouse is that the positioning method is different. What is the working principle of the photoelectric mouse: There is a light emitting diode inside the mouse, the light emitted by the light emitting diode, illuminating the bottom surface of the mouse (this is why the bottom of the mouse will always emit light ). Then, a part of the light reflected at the bottom of the Optical Mouse is transmitted to an optical sensor (micropho

filter, it is impossible to trace the oscillation frequency change of the VCO. If the time constant is too small, ripple will occur on the VR, which worsens the stability of the PLL (phase locked loop).Therefore, based on experience, the time constant of the loop filter is chosen about hundreds of times times the period of the reference frequency (1/FR). This option is approximately dozens of Ms. --------------------------------------------------------------------------------------------------

are no special application requirements, it is advisable to select the device in these two companies.Hardware Resources for 5.1.2 devicesHardware resources are important criteria for device selection. Hardware resources include logical resources, I/O resources, cabling resources, DSP resources, memory resources, phase-locked loop resources, serial transceiver resources, and hard-core microprocessor resourc

The architecture of the Da Vinci digital media on-chip system and the Linux Startup Process-Linux general technology-Linux programming and kernel information. The following is a detailed description. Da Vinci (DaVinci) digital media platform TMS320DM6446/3 adopts the ARM + DSP dual-core architecture. This article introduces the hardware structure of the chip and the Startup Process of the Da Vinci DMSoC and Linux OS. 　　 Da Vinci DMSoC hardware Overvi

DaVinci is a DSP and arm dual-core architecture of the SOC chip. The interaction between the chip and the outside is managed via arm-side MontaVista Linux and related drivers and applications, and the DSP end only deals with codec-related algorithms. The communication and interaction between DSP and arm is done through the engine (Engine) and the servers (server)

common technology is to compile and optimize only the fragments of frequently-run programs. 2) Optimization of computer architecture: parallel (parallel commands, parallel operations, at the processor level: Parallel threads of the same application) Memory Hierarchy (the memory consists of several layers of memory with different speeds and sizes. The layer closest to the processor is the fastest but the capacity is small) 3) design of new computer architecture Balanced CED instruction-set compu

How can we quickly become an embedded master? In fact, there is no shortcut to do the project. Let's hear from one of the following experts! What is the true story? Hardware first: I am familiar with your digital circuit teaching materials and Analog Circuit Teaching Materials. Now I am focusing on the digital circuit, and then I am familiar with the microcomputer principle and interface technology, it is best to write a few simple programs on the machine for debugging. This is very important. I

manufacturers to develop in the future. From an energy point of view, an important aspect of multicore processor development should include how to conserve energy. What is currently being addressed or will be addressed is a multi-core processor that is dynamically implemented to use core quantities to conserve energy based on actual usage requirements. At present, the random opening or shielding core number has realized this function to a certain extent, and the opening and closing of the core

Headers File: # Include # Include # Include I use # include XTest. h has the interfaces XTestFakeButtonEvent, XTestFakeMotionEvent, and XTestFakeKeyEvent. For more information, you only need to add a function name to man on the terminal. For example, the XTestFakeMotionEvent interface: Copy codeThe Code is as follows:Int XTestFakeMotionEvent (display, screen_number, x, y, delay ); Display * display; // The value is obtained from XOpenDisplay.Int screen_number; // set it to-1 to indicate the c

(this is my linux mint input) ). If display_name is NULL, the environment variable is saved by default. Common X11 programming headers File: # Include # Include # Include I am using # include And # include . XTest. h has the interfaces XTestFakeButtonEvent, XTestFakeMotionEvent, and XTestFakeKeyEvent. For more information, you only need to add a function name to man on the terminal. For example, the XTestFakeMotionEvent interface: The code is as follows: Int

programming commonly used in several heads File: #include #include #include I use the #include XTest.h has the interface we need to simulate mouse and keyboard xtestfakebuttonevent, xtestfakemotionevent and Xtestfakekeyevent. To find out more information, you only need to add a letter name to the end of the man to obtain. such as Xtestfakemotionevent interface: Copy Code code as follows: int xtestfakemotionevent (display, Screen_number, X, Y,delay); Display *displ

Fluke Networks (Fluke Network) has launched an ethernet cable tester "DTX-1800", in addition to the widely used "5e" line, it can also be used to detect "6" and "7" lines with better transmission characteristics. You can check whether the cables used as the measurement object meet the corresponding specifications. The testing frequency is up to 900 MHz. Reduce the testing time of the "6" line to 12 seconds, less than 4300 of the latter, compared to about 40 seconds of the company's original prod

. synchronous DMA and asynchronous DMA The device driver can use DMA in two ways: Synchronous DMA and asynchronous DMA. First, data transmission is triggered by processes. Second, data transmission is triggered by hardware devices. Using synchronous DMA such as a sound card, the user application writes the sound data to the device file corresponding to the digital signal processor DSP of the sound card. The sound card driver collects the written sam