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Source of the problem:The serial data interface is debugged, and the data line is expected to be nanosecond-delay in CPLD (EPM570).Resolution process:--Using Insert Lcell to delay, Lcell delay is relatively fixed but will be affected by temperature, device and other factors;The Insert method is as follows:Wire ad1_ch0_wire; = adc_b0; Lcell U0_lcell/** * ( . inch (Ad1_ch0_wire), . out (Ad1_ch0) );Note that need /* Synthesis keep */To keep Lcell is not optimized in

In Chip Planner, when you watch your feet, you'll see the pin and pad appear at the same time,such as pin120/pad174 Bank 4So what's the difference?Pin refers to the chip is packaged in the pin, that is, the user sees the pin;Pad is the pin of the wafer, is encapsulated in the inside of the chip, the user can not see.There is also a wire connection between the pad and the pin.Pad also refers to the input and output buffer/register unit.Further in the Resource property Editor see the PAD as follow

The structure of an IO in Chip planner is shownThe left side is the output section to the right of the input section, but will notice two structure: 1, register, 2,delay moduleHere's my guess: These two structures are designed for timing optimization and are mentioned in Altera's timing optimization documentation for the fast input and output registers in the Io cell.If you have the correct timing constraints, the Quartus software can automatically determine whether the register is placed in the

, its configuration data is stored in SRAM and must be re-downloaded when power is added. In an experimental system, a computer or a controller is usually used for debugging, so PS can be used. In the practical system, in most cases the FPGA must be actively guided to configure the operation process, when the FPGA will actively from the peripheral dedicated storage chip to obtain configuration data, and this chip in the FPGA configuration information is designed by the ordinary programmer to the

AbstractIf Modelsim-Altera 6.1g is modified under us II 7.2, the following statements may fail. IntroductionEnvironment: US us II 7.2 SP3 + Modelsim-Altera 6.1g Error: Can't launch The Modelsim-Altera software -- the path to the location of the executables for The Modelsim-Altera software were not specified or the ex

Design Example of Altera: http://www.altera.com.cn/support/examples/exm-index.html Reference Design of Altera: http://www.altera.com.cn/support/refdesigns/ref-index.jsp Altera White Paper: http://www.altera.com.cn/literature/lit-wp.jsp Altera application manual: http://www.altera.com.cn/literature/lit-an.jsp

AbstractHowever, in Quartus II, the vector waveform method can be used as the electrical module, but this method is limited to a single module, how can we use Modelsim-Altera and testbench to create a linear electrical model? IntroductionEnvironment: US us II 7.2 SP3 + Modelsim-Altera 6.1g How can I design a digital circuit in the website? (SOC), we use the vector waveform modulo created in Quartus II.

Call the Altera IP core emulation process-upAfter studying this section, please read the simple simulation process based on Modelsim-se, as this section is designed based on the simple modelsim-se simulation process and the repetitive content involved in the process of designing the simulation process will no longer be detailed and will be If you delve into the section "simple simulation process based on Modelsim-se", the following will be very simple

AbstractThere are actually a lot of related information provided by Altera, but it is impossible to organize systems like Microsoft msdn library, but in part II, I found that Altera made a complete package of related materials, handbook, userguide, tutorial... the connection is in. IntroductionNioii correlation item header: http://www.altera.com/literature/lit-nio2.jspNiosii_docs_7_2.zipNiosii_docs_8_0.zip

I have summarized the programming of the Altera device as follows. I hope to comment on it more .......... Configuration file: After the logic code of the Altera us compilation is completed, the system generates the POF (Program object file) programming object file and the sof (SRAM object file) SRAM object file. POF is used to load EPC, and SOF is used to directly configure the SRAM structure of FPGA.

DDR2 Circuit DesignHigh-speed large-capacity cache is an essential hardware in high-speed big data applications. At present, the use of a wide range of high-speed large-capacity memory in FPGA system has a classical low-speed single data rate of SDRAM memory, and high-speed dual-rate DDR, DDR2, DDR3 type SDRAM memory, The DDR series of memory all require the FPGA chip has the corresponding hardware circuit structure support. For the Altera Cyclone IV

Link: http://www.altera.com.cn/literature/wp/wp-01166-bdti-altera-floating-point-dsp.pdf In the future, it will be more meaningful to conduct a comparison test of Xilinx DSP architecture FPGA based on the testing method in this article. But remember: the human brain is the best optimizer! Introduction: OverviewFPGAs are increasingly used as Parallel Processing engines for demanding digitalSignal processing applications. benchmark results show that on

Currently, many people install Xilinx and Modelsim separately. Therefore, when using simulation libraries of chip manufacturers such as Xilinx or Altera, libraries cannot be found; because Modelsim does not own the simulation libraries of FPGA manufacturers, you must manually compile these libraries. Below I will introduce three methods to increase the library problem of Xilinx or Altera: 1. find the inst

value is 101011, the value is signed number, represents-21, then the real and imaginary parts need to move left 21 bits is the final result; If FFT inverse transformation, only need to put inverser 1 can; Burst interface TimingStreaming interface TimingThe stream I/O data flow structure allows input data to be continuously processed and output continuous complex data streams. This process does not need to stop the FFT function data flow in and out.Note: In each frame of data transmissi

Provides a unified source for your WDR monitoring camera Solution Continuing its leading edge in high definition (HD) wide dynamic range (WDR) surveillance camera solutions, Altera Corporation (NASDAQ: altr) and apical Ltd. (UK) altasens Ltd. announced today that it will begin to provide the industry's first hd wdr video monitoring chipset. This unique chipset combines ALTERA Cyclone iv e fpga and security

AbstractQuartus II is a large but extremely powerful component. Beginners are often lost in the us II category, altera provides technical training for beginners, focusing on "all Chinese 』!! IntroductionQuartus II functions are even greater than Visual Studio. Even after two years of research on FPGA and niosii, many functions of Quartus II and niosii have not been used, today, we found that Altera was ver

I just got the official Altera max10 evaluation board provided by Junlong! Please share it with us. The board is very simple, and I/O ports are all extended. Other functions are basically not available. FPGA model: 10m08sae144c8ges, 144-pin encapsulation, single-power supply, 12-bit AD function integrated, 8 K logic unit. You can take a look at max10 datasheet. Http://www.heijin.org/forum.php? MoD = viewthread tid = 31007 extra = Page % 3d1 Let'

The first step must be the pin planner, which is the view of the four generations of black gold ep4ce15f17c8. The first is to find that their pin has different color areas, which correspond to different banks respectively. Some designs require that the pin be in the same bank (first, this conjecture is followed by verification ), what does different circles and triangles mean? View --> pin legend In the figure, the pin of several brown backgrounds is used. If you place the cursor on the pin, t

Link: http://group.ednchina.com/56/31122.aspx Summary of questions and answers provided by Altera Forum I can't afford losing any of these invaluable information anymore! It is not too late if I start reading and collecting them from now on. I will look the threads through everyday as I do with my Hotmail e-mails and eetimes rsss. It's all about timing: Sun Nov 01 2009 17:17:32 GMT + 0800 signal transfer in different clock domainsSun Nov

When using the Altera device for design and Modelsim for post-simulation, you must first set the tool in Quartus, setting -- edatool -- Simulation-Tool Name --- Modelsim (OpenGL ); Then perform full compilation. The simulation folder is generated under the project directory. The internal Modelsim folder contains three files *. the VO file is the simulation model file after layout and wiring ,*. SDO files are standard delayed files. Add *. Vo and t