lattice fpga

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In general, there are two FPGA measurement frequency algorithms: frequency measurement and measurement Week. I used the electronic measurement textbook to find the definition. The frequency measurement is to count the input signal period within a certain period of time, while the measurement week is opposite. It is within the input signal period, count the standard signal period. It can be understood that the frequency measurement uses a slow clock to

FPGA pin Verification Step (quartusii) 1, new TXT file, write pin configuration (no write voltage type) Syntax only set_location_assignment pin-to pin name such as: Set_location_assignment pin_b11-to CLK2 Set_location_assignment pin_g7-to P1db[0] (This is a multi-bit input and output, you need to disassemble the configuration) diagram: 2, new project, choose the type of FPGA you want to use, if not, you

: For details, see the original project under "./experiment02. For the modeling process, see the modeling video "video_exp02 ". For the configuration process, see "Experiment 2 configuration" Flash_module.v is a 10Hz, 50% duty cycle output function module. To put it simply, the timer switch... The code is relatively simple. Run_module.v is a flow lamp with a scanning frequency of 3.3hz. It is written in the form of a "control module. 16 ~ The 24 rows are 1 ms counters. 28 ~ The 36 rows are

[Serialization] FPGA OpenGL series instances Sequence Signal Generator Based on OpenGL I. Principles In digital circuits, serial signals are a series of periodic binary signals cyclically generated by synchronous pulses. the logic device that can generate such a signal is called a sequence signal generator. according to the structure, it can be divided into two types: Feedback Shift Type and counting type.A shift-type serial signal generator con

[Serialization] FPGA OpenGL series instances Conversion of binary and Gray Codes Using Tilde Gray Code features: There is only one difference between two adjacent code groups. Common binary codes and gray codes can be converted to each other. The following is a brief introduction. 8-bit binary code to Gray Code Binary Code Conversion to Gray code: From the rightmost one, one is different from the other on the left, or is used as the value of

The process of prototyping and validating ASIC using FPGA reference:http://xilinx.eetrend.com/d6-xilinx/article/2018-10/13736.htmlGiven the complexity of chip design, the steps and processes involved in successfully designing a chip are becoming more complex, and the amount of money required is multiplied, and the cycle and cost of a typical chip development project is as follows Can be seen before the chip manufacturing, a lot of energy will be

PDF download: http://files.cnblogs.com/linjie-swust/FPGA%E4%B8%ADIO%E6%97%B6%E5%BA%8F%E7%BA%A6%E6%9D%9F%E5%88%86%E6%9E%90.pdf1.1 Overview In high-speed systems, FPGA timing constraints include not only internal clock constraints, but also complete Io timing constraints and timing exception constraints to achieve PCB-level timing convergence. Therefore, the timing constraints of the I/O ports are also import

Reproduced from the network, the author is unknown.I have many years of work on the FPGA study of QQ group administrators, a lot of new recruits for a long time are always repeating asked some very simple but let the novice puzzled questions. As administrators often to the novice to popularize the basic knowledge, but very unfortunate is a lot of rookie with a impetuous mentality to learn FPGA, always anxio

volumes of digital processing are very large, in order to increase the speed, commands and data spaces are separated to access two spaces using two buses. At the same time, generally, there is high-speed RAM in the DSP. Data and programs must be loaded to the high-speed slice Ram before they can run. To improve the efficiency of digital computing, DSP sacrifices the convenience of memory management and has many poor support for multiple tasks. Therefore, DSP is not suitable for multi-task contr

FPGA chip Internal Hardware introductionFPGA (Filed programmable gate Device): Field programmable logic device???? FPGA based on the structure of the lookup table plus trigger, using the SRAM process, but also using flash or anti-fuse technology, the main application of high-speed, high-density digital circuit design.???? FPGA consists of programmable input/outpu

FPGA low temperature cannot start analysisPhenomenon Description: In the medium plate light end machine to do low-temperature test, respectively to the transmission version, the receiving board power-off restart, found that some boards in the -40° can start, and some boards in -20° are not able to start, need to raise the temperature to 0° above to start, The observed phenomenon is that the 4 LED lights that indicate the status are lit, and the

The FPGA design human body consists of six steps: design input, synthesis, functional simulation (pre-simulation), implementation, timing simulation (post-simulation), and configuration download. the design process is shown in step 2. The following describes the design steps. 1. design input The design input includes three methods: Hardware Description Language (HDL), status chart, and schematic input. The HDL design method is a good method for des

The process of converting image processing algorithm to FPGA system design is called algorithm mapping, and the implementation of CPU parallel algorithm is different from that of FPGA parallel algorithm.1. Algorithmic System ArchitectureThe image processing algorithm mainly has two kinds of design structure: pipeline structure and parallel array structure.1.1 Pipeline structureIn my opinion, there is a cert

From: http://tvb2058.spaces.eepw.com.cn/articles/article/item/15358 Although FPGA and CPLD are both programmable ASIC devices with many common features, the differences between CPLD and FPGA have their own characteristics:① CPLD is more suitable for completing various algorithms and logic combinations, while fp ga is more suitable for completing time series logic. In other words,

Prerequisites for using FPGA on Yarn Yarn currently only supports FPGA resources released through intelfpgaopenclplugin The driver of the supplier must be installed on the machine where the yarn nodemanager is located and the required environment variables must be configured. Docker containers are not supported yet. Configure FPGA Scheduling InResource-types.

* ****************************** Loongembedded ******* ************************* Author: loongembedded (Kandi) Time: 2012.1.7 Category: FPGA development * ****************************** Loongembedded ******* ************************* Note: The following description is based on the FPGA chip of the Altera series. It is the first time to learn FPGA. Some of the co

This paper introduces the difference of three modes under as, PS and Jtag.As mode: Burned to the FPGA configuration chip saved, FPGA device every time the power up, as a controller from the configuration device EPCs actively emit read data signal, so that the EPCs data read into the FPGA, to achieve the FPGA programmin

1 SRAM Read-Write timing interpretation Memory is overwhelming, and is the size of the computer system (including embedded systems) is not a small part. It is no exaggeration to say that there must be a data transfer process where there is memory, whether it is embedded in the CPU or plug-in, in the code store or program running when it must be necessary. In this section, the experimental object SRAM (Static RAM) is an asynchronous transmission of volatile memory, its read and write transmissio

Tags: style blog http io using ar file spRecently need to debug an FPGA driver, the whole egg hurts! Dev_dbg want to use this as debug output is unsuccessful, has been completely defeated! Reflection in ...At present, according to the following related settings can not print, and online said some of the discrepancy, the problem has to be studied.Where the driver calls dev_dbgPunch-in Debug functionThe console default level for PRINTK.C is also modifie