microsemi fpga

Tags: FPGAIn some FPGAs, floating point numbers cannot be operated directly, but only fixed points can be used for numerical operations. For FPGA, the book involved in mathematical operations is a 16-bit integer number. What if there is a decimal number in the mathematical operation? You must know that FPGA is powerless to decimal places. One solution is to adopt calibration. The number calibration is to in

Debug fiber Interface interface with FPGA:Due to the needs of the project, the previous period of time debugging the optical fiber interface, recording some design experience.In the design, FPGA is used to control optical fiber module to complete the transmission of optical fiber data, FPGA uses Xilinx company's Spartan6 lx45t, because of its internal 2 GTP transceiver, can be used as a variety of communica

resolution limit, so in people's opinion LED will always glow but low brightness. Not all peripherals, however, can withstand frequencies as high as 1.5MHz. Many devices contain transistors, but the transistor is a cutoff frequency limit problem, when the output pin through the transistor to amplify the output current, the high frequency will cause the output to fail, so in most cases we need to reduce the PWM output frequency. An arbitrary integer divider can be obtained using the ring

This article is from the "Advanced FPGA Design" corresponding to the Chinese version of "High-level FPGA, architecture, implementation, and optimization" in the first chapter of the contentThe improvement of timing in FPGA, I believe is also one of the most concerned about the topic, in this book listed some methods to provide reference.1, insert register (add re

Whether it is MIPS, Nios II, Microblaze, MSP430, 8051, OpenRISC, OpenSPARC, leon2/leon3, etc. soft core processor, When implemented on an FPGA, we typically need a portion of the on-chip RAM storage bootloader, which can be used with GCC objcopy to bootloader text, exception vector, rodata, data or BSS and so on you need to copy out, you can generate binary files through-o binary, you can use-J. Section to extract the section you want, of course, you

1 Speed and areaThe overall optimization level will reach the speed and area of the RTL to take advantage of the logical topology.For FPGA due to lack of knowledge in the backend, gate-level optimization. In general, higher speeds require higher parallelism and greater area, but in some special cases this is not the case. Because the layout and cabling of FPGA have the second order effect.Until the layout i

I. SummaryThe method of allocating and preserving FPGA pins in Quartus II is summarized.second, the Pin allocation methodThe FPGA pin assignment, in addition to the QII software, select the "Assignments->pin" tab (or click the button), open the Pin Planner, assign the PIN, there are the following 2 ways.method One: Import AssignmentsStep 1:Use Notepad or similar software to create a new TXT file (or CSV fil

Recently in the study of FPGA, I tried to write a button scanning program. Although there is a single-chip microcomputer-based key scanning experience, there are some concepts for the handling of keys.But the single-chip computer program is usually written in C, but also useful compilation, and FPGA is the use of VHDL or Verilog This hardware description language to write. First use VHDL to writeControl pro

In the FPGA design, all arithmetic operators are performed according to the unsigned number. Recently used FPGA to do a signed calculation, to record1. If the signed number calculation is to be completed, the to and subtraction operations can be done by means of a complement of unsigned additions. However, in the calculation of the number of bits to consider the limit, whether in addition or subtraction, th

Design Purpose:1. Camera Driver (30w-500w MIPI interface)2. VGA Display Driver3, USB2.0 Video Collection4, Tft Lcd interface (TTL, LVDS driver)5, video, image processing (algorithm validation)6. Various video interface processing (AV, VGA, LVDS)Finish the effect:The current hardware has been basically tested (serial, 68013, VGA, SDRAM, UART, cmos-ov7725,ov7670, 7 inch TFT Lcd Drive)1, complete the routine test: VGA camera video display, VGA display SDRAM high-speed data, PC video capture2, trans

Research on RC6 algorithm implemented by FPGA [Date: 2008-10-29] Source: single-chip microcomputer and Embedded System Application Author: Beijing Institute of Electronic Science and Technology Wu Yuhua Li Ligao xiwei YAN Shi ding [Font:Large Medium Small] 　 Introduction RC6 is a new group password submitted to NIST (US National Institute of Standards) as a candidate Algorithm for AES (Advanced Encryption Standard. It is designed

[Serialization] FPGA OpenGL series instances DC motor PWM Control Based on OpenGL I. Prerequisites In the previous article, I summarized the control of the stepper motor. This time I will learn about the control of the DC motor. First, we will briefly understand the difference between the stepper motor and the DC motor. (1) step-by-step movement of stepper motors, DC motors usually adopt continuous movement control. (2) The stepping motor adopts direc

Logical replication is often used in FPGA design.1. The signal-driven series is very large, fan-out is very large, and the driving force needs to be increased Adjust the fan-out of the signal when logical replication is most commonly used. If a signal needs to drive many units in the back-level, the fan output of the signal is very large, one way to increase the drive capability of the signal is to insert a multi-level buffer, however, although this c

Document directory Step 1 Add the sd_card folder to the APP project path Step 2 write code Step 3 call the SD card driver Function In the previous section, we completed the configuration of the niosii SBTE. The following describes how to compile an SD card Driver Based on existing references (manual and code.Prepare tools and materials 1. WinHex 2. Efronc's blog post SD/MMC interface and power-on sequence, SD/MMC internal registers, and command set in SD/mmc spi ModeStep 1: add the sd_car

1. Flow of signals carried by FPGA at the board level. Generally, the strip of a Board follows the signal stream. from one side to the other side, it may be bent, but it will not return. FPGA pins are allocated. This principle should also be followed to avoid wiring, such as crossover and surround. 2. FPGA internal bank. Be familiar with the internal distri

obtain the FPGA-specific VHDL RTLCode.5. Figure 5 signalcompiler 4. Use Modelsim for RTL-level simulation This step is to simulate and verify the VHDL File converted from the. MDL file, which can be achieved by adding the testbench component. 6. Figure 6 testbench In addition, if you select the launch GUI, you can directly start Modelsim for simulation. If you do not select it, you can use TCL --> execute macro under the Tools menu of

Fpga hdl source program FPGA statistics camera output pixels, form sizes, and so on //----------------------------------------------------------------------------// user_logic.v - module//----------------------------------------------------------------------------//// ***************************************************************************// ** Copyright (c) 1995-2012 Xilinx, Inc. All rights reserved.

At present, many companies have proposed new types of computer high-speed bus, such as the Arapahoe bus standard and hypertransport technology. However, the protocols are not compatible with each other and there is no unified standard. As a traditional universal local bus, PCI bus still occupies the mainstream PC market, with tenacious vitality. 　　 There are various PCI interface chips on the market, such as AMCC's S5933 and PLX's 9080 series. The dedicated chip can implement the complete interf

of the signal, keeping the low-frequency signal, to compensate the transmission line attenuation of the signal, improve the performance of the eye graph and guarantee the transmission quality.3 Xilinx FPGA Transceivers3.1 system ArchitectureThe 7 Series FPGAs GTX and GTH transceivers is power-efficient transceivers, supporting line rates from $ MB/s to 12.5 GB/s for GTX transceivers and 13.1 Gb/s for GTH transceivers. Four Gtxe2_channel Primitives an

I recently went home for a few summer vacation. Although I had to keep learning, I had to look at the theory in a completely isolated computer environment. Today, I will go back and burn the FPGA code into the Rom, and then enable automatic configuration upon power-on. This article is simple and simple, and only serves as my personal record, in case you forget to use the configuration steps in the future. (The image function of the csdn blog is not go