risc v fpga

I. The core Board uses a more advanced FPGAEp3c16q240With more resources and higher performance; Ii. Core Board4-layer PCBDesign, more stable, more professional! Can be used in industrial products; III,Wide power input (7.5v ~ 16 V) Design, Including anti-plug-in and anti-attack functions, and built-inThree-way switch power supply moduleMore environmentally friendly and energy-saving. It can be used not only as a Development Board, but also as a good design reference for industrial application

AbstractWeekly slave is used most of the time, so I usually feel better about slave. If component is deployed, when should the master be established and when should the slave be established ?. IntroductionIn Jay Kraut's Hardware Edge Detection Using an Altera Stratix niosii Development Kit, the following statement breaks through the master and slave. Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> The Masters initiate communication and the Sl

Http://www.cnblogs.com/fpga/archive/2009/10/24/1589318.htmlThe duty ratio is 50% dividedEven frequency division is relatively simpleFor example, the N-frequency, then count to n/2-1, then the clock flipped, the code is as follows:1 module even (clk_in,clk_out,rst_n);2 input clk_in;3 input rst_n;4 output clk_out;56 parameter n=6;78 reg [3:0] CNT;9 Reg Clk_out;10Always @ (Posedge clk_in or Negedge rst_n) beginif (!rst_n) beginCntclk_outEnd+ Else if (cnt

Modelsim with a reg type, such as CLK is input,The above Modelsim is used in the output of the reg,.v file, that is, outputs, in the Modelsim is a wire, this should bear in mind//---------------------------------------------------------Description of each module-------------------------Led_source#(. Led_width (4))I1 (Port map-connection between master ports and Signals/registers. CLK (CLK),. Cnt1 (Cnt1),. Flag_cnt1 (Flag_cnt1),. Led_out (Led_out),. Led_out_cnt1 (Led_out_cnt1),. Rst_n (Rst_n));T

The PLL is actually a negative feedback system that synchronizes the clock on the circuit with the phase of an external clock The PLL phase-locked loop has three components:Phase detector PD, loop filter lf and voltage controlled oscillator VCO Principle: The external input reference signal is used to control the frequency and phase of the internal oscillation signal in the loop.PD, which detects the phase difference between the input signal and the output signalLF, the converted volta

operand is negative, the remainder is positive, that is, B%a,bThen what will the result be? The simulation results with Modelsim are as follows:You can see that the symbol of quotient and remainder is the same as the symbol of the number of remainders.4. The operation symbol of power is * *, while the operation symbol of ^ refers to bitwise XOR or Attribution .^ Bitwise XOR: Two Yuan Xor, there are two operands located on both sides. If a bit is x or Z, the bit result is x, otherwise the same i

1.Location Constraint for assigning I/O portsNET Example:NET My_io loc=r7;2.IOSTANDARD Attribute for selecting IO standards such as LVCMOS25,LVDS_25, etc.NET 3.Output Slew Rate AttributecNET Slew_value can SLOW (Default) FAST Quietio4.Output Drive Strength Attribute driving capacity (MA)NET Drive_value can 2 4 6 8 (Default) 16 245.pullup/pulldown/keeper for Ibuf, Obuft, and IOBUFNET Spartan-6 FPGA SelectIO Resources User Guide notes 2 SelectIO attribu

1, kneeling ask the program compiled by VHDL How to generate after the compilation. The schematic diagram of the BDF format EDA design has many modules how to integrate each module to imitateQuartus II in the file directory creat/update, and then creat symbol files for the current file can generate the module, and then create a new BDF file, double-click the space, will jump out of the dialog box, add the module you want.EDA Design has many modules how to integrate each module to imitate? This p

The reset circuit is very important to both FPGA and ASIC, because a poor reset circuit may lead to non-repeated faults. 1. Problems Caused by full Asynchronous Reset Full Asynchronous Reset is asynchronous when it is established and released, which may bring the system into quasi-steady state. 2. Full synchronization Reset 3 asynchronous establishment and synchronous release of the circuit will provide more reliable reset than the fully syn

As117 provides 1A Linear Power Supply: 144 pin, less than 50 thousand doors As2839 and lt1085/6 provide 3A Linear Power Supply: 240 pin, 0.3 million logic gate or lower Tps54350 provides 3A Current Switching Power Supply: Suitable for most needs Reset is generally a low-level reset (except for some), chip reset (max708s/70￥ ￥1.6 series, high and low level 2 reset mode, with power monitoring capabilities. Ipm811 ￥0.8 low-level reset small volume) and resistance Reset

that the configuration of the worker in the FPGA builder is problematic, and the hardware won't be successful. Step 2:Change the specified function to hardwareNow we want to use the hardware interface line of the sum_elements () function. The following example selects accelerate with the nio ii c2h compiler for sum_elements. After the selection, there will be more c2h settings below. Select "build software and generate system" and "use hardware

From FPGA/CPLD Application Design Example 1 Use lowercase letters for all signal names, variable names, and port names, and uppercase letters for constant names and user-defined types. Use meaningful signal name, variable name, Port name, and parameter name. The signal name length should not be too long, and strive to be concise and clear. Use CLK as the prefix of the signal name or signal name for the clock signal (when multiple clocks e

1 Decision Tree The IF else statement and case are used in FPGA. A) if else is privileged, similar to priority encoding (when the two conditions are both true, only the first condition is true). Therefore, the IF else structure should be used when there are privileged conditions, the privileged order of parallel if condition statements is exactly the same as that of if else. B) case statements are often (not always) used in conditions where all con

Traffic, latency, and time series traffic in FPGA design: The data bit that can be transmitted in each clock cycle. Time delay: the clock period that data goes through from input to output. time sequence: The maximum latency between two components. It determines the maximum clock speed of the system. 1 pipeline can increase the traffic, for example, computing x ^ 3, Iterative StructurePipeline: Traffic = 8/1 latency = 3 Time Series = multiplier latenc

[Serialization] FPGA OpenGL series instances Registers of Tilde I. Principles Registers are used for storage by computers and other digital systems.CodeOr the logical part of the data. Its main component is the trigger. A trigger can store one binary code. Therefore, the register for storing n binary code requires n triggers.The functions of registers and data latches are the same. The difference is that the latches are level signal control and

[Serialization] FPGA OpenGL series instances Data Selector Based on OpenGL I. Principles Data selection refers to transferring data from multiple channels to the unique public data channel after selection. The logical circuit that enables data selection is called a data selector. It acts as a single-knife, multi-Throw Switch with multiple inputs. Table 1.1 select a data selector truth table II. Implementation In the design file, enterCo

[Serialization] FPGA OpenGL series instances 3-8 Decoder Based on OpenGL I. Principle: Decoding is the inverse process of encoding. Its function is to identify binary codes with specific meanings and convert them into control signals. A logic circuit with decoding function becomes a decoder.The decoder can be divided into two types:CodeConvert to one of the valid signals. This decoder can be called a unique address decoder. It is often used for

It is a hardware description language used for digital system design. It can be used for logic design at various levels, as well as simulation and verification of digital logic systems, timing analysis, and logic synthesis. At present, OpenGL is the most widely used hardware description language. The highest level of learning hardware is to have a circuit in our hearts. For those who are new to FPGA and HDL, the most important thing is to have more

-distortion clock ResourceFPGAThe internal wiring structure is a tree structure. Sends the output of the divider to the triggerCEDetection when the system clock arrivesCESignal validity whenCEWhen the signal is valid, the trigger output is changed, which is exactly the same as that of the divider, and this processing also makes the wiring more optimized. For multi-fan-out problems, it usually refers to the use of one node to drive multiple lower-level logical devices. For triggers with a

Http://bbs.ednchina.com/BLOG_ARTICLE_3029418.HTM?source=sina Recently, when using Nios II as a project, found a strange phenomenon, in the Nios II eds software compiled good Code, burned to the chip, the first to be able to run normally, but when I press the reset button on the board, the system is stuck, and can not run again, unless the download program. Through the analysis system, the hardware design of the system and the construction of the Nios II CPU system in the QSYS system are all wit