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Introduces state machine
Sunday, January 10th, 2010 at 20:24 | No commentsCategories: EDA/PLDTags: state machine, VHDLShort Content: Borrows zqadam the logic to change:`define S1 0`define S2 1`define S3 2`define S4 3`define S5 4`define S6 5`define S7 6`define S8 7 module clk_gen2 (clk, reset, clk1, clk2, clk4, fetch, alu_clk); input clk, reset;output clk1, clk2, clk4, fetch, alu_clk; wire clk, reset;reg clk2, clk4, fetch, alu_clk;reg[7:0] state, next_state; wire s_s1 = state [`S1];wire s_s2 = state [`S2];wire s_s3 = state [`S3];wire s_s4 = state [`S4];wire s_s5 = state [`S5];wire s_s6 = state [`S6];wire s_s7 = state [`S7];wire s_s8 = ... -
Code standard - state machine code choice basis_state machine, encoding
Sunday, January 10th, 2010 at 18:32 | No commentsCategories: EDA/PLDTags: encoding, state machineShort Content: Will see frequently others will use each different encoding method in the state machine design, then in the ordinary circumstances, what this kind of encoding method's choice basis will be? We knew that most commonly used has three encoding methods in the digital logic design: The binary system, gray code Gray, codes One-hot One hot code to use group of elements hotly alone, each element only has 1bit to be effective, for exampleIDLE = 0001,WRITE = 0010,READ = ... -
State machine example_Verilog, state machine
Sunday, January 10th, 2010 at 08:48 | No commentsCategories: EDA/PLDTags: state machine, VerilogShort Content: You may assign the condition register and state machine's condition. The following is one has four condition ordinary state machines. // These are the symbolic names for states// definition state mark nameparameter [1:0] S0 = 2 ' h0, S1 = 2 ' h1, S2 = 2 ' h2, S3 = 2 ' h3; // These are the current state and next state variables// defines the current condition and the next state variablereg [1:0] state;reg [1:0] next_state; // state_vector ... -
Multimode machine coordination design_state machine, VHDL
Sunday, January 10th, 2010 at 07:46 | No commentsCategories: EDA/PLDTags: state machine, VHDLShort Content: Along with microelectronic technology rapidly expand, people to number system's demand also in enhancement. Not only need have the consummation function, moreover also set the very high request to the speed. Regarding the majority of number system, may divide into the control unit and the data unit two constituents. Usually, control unit's main body is a limited state machine, it receives the status messages which the external signal as well as the data unit produce, has the control ... -
Designs the limited state machine fast with STATECAD_state machine, VHDL
Sunday, January 10th, 2010 at 05:55 | No commentsCategories: EDA/PLDTags: state machine, VHDLShort Content: The number system usually divides into the information processing unit and the control unit. The information unit mainly carries on the information the transmission and the operation, but control unit's primary mission is the control information processing unit micro-operation order. The control unit realizes the way to include: The limited state machine, controls the register and the micro code controller and so on. The limited state machine carries on the discretization control in the time criterion to its ... -
Based on piece on state machine’s intelligent power source management unit design
Wednesday, March 18th, 2009 at 01:26 | No commentsCategories: Power SupplyShort Content: AT73C203 is the US loves especially the Meier company the high integration rate intelligence power source management chip which promotes in view of the portable electronic products, is suitable in the 4.07~4.20V each kind of lithium ion battery, provides many kinds of input source choice as well as the multi-channel DC/DC programmable transformation output. Figure 1 uses AT73C203 to manage the core as the power source the DSC prototype project AT73C203 characteristic (1) four group input source choice, including an ... -
Based on FPGA high speed PID controller design and simulation
Saturday, November 22nd, 2008 at 03:12 | No commentsCategories: EDA/PLDShort Content: In CNC (computer numerical control) processes, the laser cutting, the automated roll arc welding system, to step-by-step/the servo motor control and other by in the motor control machinery assembly setting movement control system, the PID controller applies widely. Its design technique is mature, since long formed the model structure, the parameter installation has been convenient, the structure change was flexible, could satisfy the general control the request. This kind of motion control system is accused the quantity ... -
Based on FPGA electricity turbulent flow slow fast control system
Tuesday, September 23rd, 2008 at 20:10 | No commentsCategories: EDA/PLDShort Content: Abstract: This article proposed one kind based on the FPAG chip control system design proposal. In the system controls ADC clear signal gathering highly effective using the FPGA state machine. Fuzzy controller which builds in FPGA through to exciting current continual adjustment, has realized control policies and so on constant speed, permanent torque and constant flow.Key word: Electricity turbulent flow slow fast; FPGA; State machine; Fuzzy control Introduction Electricity turbulent flow slow fast principle of work based on electromagnetic induction ...
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