Search Engine

State Transition

Add Question

64 Threads found on State Transition
I was given a state diagram of a mealy machine as shown below: 133526 I should determine what does this mealy machine do, that means find what kind of sequence it is detecting. I've tried to solve this and got 6 possible sequences: When going from S0 - S1 - S3 - S6 - S0 = 1111 S0 - S1 - S3 - S4 -
I am wondering how to draw a state transition diagram for a two bit counter with the same reset capabilities of a register. I am also wondering if this reset signal is asynchronous what does this change about the output function and is it a Mealy Machine?
Hi, To Model your model with Kalman filter, You will need state transition matrix and variance of measurement and process noises. If you are looking only for comparison purpose, Kalman filter is already implemented in matlab package. Check this link:
This is one advantage of using rising_edge(clk). you have a transition from 'U' to '1'. Is that a rising edge -- from unknown state to '1'? I don't know how you defined clk, but you should ensure it is '0' before the first transition to '1'. the older style, (clk'event and clk = '1') would also "work", but the problem really is that you (...)
I have tried lot of debugging in code but still not getting result. The output (product and money change) is not changing from its initial state(zero). Requirements? Input and outputs? Timing diagrams? state transition diagram? Possibly some HDL code? Why do you make the assumption that someone here is sitt
Get your FSM state transition diagram right, that would be the 1st step. That will make sure ur Verilog code is implementing the proper functionality or not.
I suggest that you put away the simulator/hardware and get a pencil and paper to draw up the state transition diagram for each device. Once you have that designed so that you can use 2 copies to "play" the game by hand, you can look at translating it into code which is usually a fairly straight-forward process once you have the states and (...)
But I also read that the data output of the second FF may or may not be correct because the input to it is a metastable value. Your error of reasoning is as follows. You get a possible metastable state if you sample an input near a 0->1 or 1->0 transition. Both 0 or 1 would be correct values in this case. The purpose of the
How much Voltage margin before a false transition? Vol-Vil and Voh-Vih How much stray current is needed to be pulsed to cause a false transition? ( inductive or capacitive ) for each state How much power margin? product of above...for each state or margin of noise power required to cause false (...)
If there is pulse between 60 and 120 second ? Where does the pulse come from ? Is it actually a pulse or some low to high transition which remains in high state after transmission ? Edit: If pulse is detected between 60 and 120 sec then Relay is turned ON ?
The start of a transmission is the transition from recessive to dominant, so the bus must be in the recessive state when it is "free". It is impossible for a node to transmit anything when another node holds the bus in the dominant state.
Scan the input in timer interrupt with sufficient rate, e.g. 1 kHz, detect low-high transition by comparing with previous state.
For the following state Diagram below, I constructed a transition and output table, as well as used D-Flip Flops and K-maps to find the minimized equations. Can someone please check my work? The only confusion on my part came from my encoding of the states, as well as only having one error propagating from the IDLE state. As (...)
A state diagram is a graphic representation of a finite state machine. It has usually one and only one "input from nowhere", the transition to the initial respectively reset state. I don't see what should be the meaning of multiple transitions from the outside?
If the core has a fixed latency, which for a divider algorithm should be the case (clock cycles same as bit width), then you should just wait in the "divide" state for the required number of clock cycles until the divide is finished. If the divider IP has a signal to indicate a valid output for the division use that to transition out of the "divide
Howdy all, We've wrritten the following code which implements a finite state machine: always_comb // vc global state transition implementation begin case (vc_state_ps) IDLE : vc_state_ns = idle_2_cred ? CRED : (idle_2_active ? ACTIVE : (idle_2_route ? ROUTE : vc_state_ps)); (...)
As salmanliaquat informed you, you must have code which will allow the I2C peripheral controller to process things to the next state (and your code will have to either be called again to handle the next state transition through polling or through interrupts). Review the example codes he posted, and if you still have problems with (...)
Can anyone please explain what is the condition for BLE Link Layer FSM to swicth from Advertising to Connection state? Thanks Akhil I have found the answer. First the BLE device in scanner device (after receiving Advertising packet from Advertiser) will receive LE_Create_Connection command from its Hos
i have tried to use a AC solid state relay to connect / disconnect a DC load. with failure due to zero crossing ....etc.. i have searched the internet and the prices of DC relays (mosfets instead of traics..or thyristors) are quite expensive ! So why not build my own !?? after all it is just a mosfet , driver and some logic , right ? any
transition from 0111 1111 to 1000 000 This means many switches turn off a lesser current, and one switch turns on a greater current. A glitch can occur if any of the switches are not in sync. Have you tried installing a capacitor at the output, in order to soften the transitions? Since you state an output impedance of 10 M, the ca
Is that signal width long enough to change the state of flip flop? Or even better asked could this two logical circurit works the same if we looked at the as black boxes and just watch the input and output?Whether is works or not depends upon the actual pulse width and if that width if long enough to clock the part
Well the design of simple testbenches is pretty much the same.You have the blackbox in your case the FSM(which has inputs and outputs).Using the state transition diagram(which you should have it drawn somewhere) you can start modeling the inputs to make your FSM pass through all possible states.Then ,when simulating, you should analyse each (...)
A digital Ground is faster: means the digital signal arrives to its Ground state faster than an analog transition.
Hi Friends, I am trying to understand JTAG protocol and am finding it hard to understand signal flow on test architecture for state transition of TAP Controller I am referring standard IEEE documentation, I am pointing out texts which i haven't understood and need your help to clear my doubts :oops::oops::oops: Capture-DR state :- A sc
I have some state model equations namely: x'(t)=Ax(t)+Bu(t) and y(t)=Cx(t)+D u(t) A,B,C,D are the matrices state transition matrix, input matrix,output matrix and detailed output matrix respectively. I know how to find out these matrices,but my problem is in finding value of x' and y. I dont know how to solve these both equations? (...)
Does anyone know what is the relation between data transition density (DTD) and phase detector's loop gain? Many papers state that DTD should independent of phase detector's loop gain.
And in other groundbreaking news painters use paint to transition objects from a non-painted state to a painted state. Good answer though! XD
Metastability is only one aspect of setup and hold times. I see a common misunderstanding, that a signal transition during the setup and hold window will generally cause metastability. That's not true. For > 99% of the window, the FF output will settle regularly, but you can't predict the state from specification. For an individual FF, the result i
Hi kydong, I don'y know if there is a built-in function in some Matlab toolbox, but you can construct it. A burst error channel can be well modelled by a two- state Markov chain: state 1 is of random errors: low error probability, low transition probability to state 2 state 2 is of burst errors: high error (...)
Conventional faults in RAM's are: Stuck-At Fault (SAF)-Cell or line sticks at 0 or 1. transition Fault (TF)-Cell fails to transit from 0 to 1 or 1 to 0. Stuck-Open Fault (SOF)-Cell not accessible due to broken line. state Coupling Fault (CFst)-Coupled cell is forced to 0 or 1 if coupling cell is in given state. Address-Decoder Fault (...)
Use @timer(). @(timer(period/2+phase, period/2)) state= !state; V(vout) <+ V(vdd,vss) * transition(state, 0.0, tr, tf); end Also see The Designer's Guide Community Forum - verilog A code for 16:1 mux My cadence
Hello everybody.I want to write a program using PIC18F452&XTAL=20MHZ in C or mikroC to do the followings; 1.Simultaneously turn a timer on to count for 1 sec. and also count the number of High state of the input signal. 2.Turn a timer on for 1 sec. and as soon as a input signal injected
Hi, The definition of the "Pulsein" instruction in bascom help is: Pulsein var , PINX , PIN , state var: A word variable that is assigned with the result PINX: A PIN register like PIND PIN: The pin number(0-7) to get the pulse time of state: May be 0 or 1. 0 means sample 0 to 1 transition and 1 means sample 1 to 0 (...)
Address transition Detector (ADT) circuits generate a brief voltage pulse in response to a rising and/or falling voltage transition on the address line. In other words the voltage transition triggers the ADT circuit - so prior to the voltage transition the ADT circuit must be in it's off (stable) state. (...)
It would be a simple thing to write out the next state and output values of a 7,1/2 encoder. But how will that help you to find the euclidean distance? Euclidean distance depends on how each of those output values are mapped to constellation points. Even if that is done, this is not a good measure, since it the minmum distance between sequences of
Onehot simply means that only one bit of the states put together is high - meaning only one state is active. Only one bit changing is gray code.
hi, i m trying the project edge detection using hidden markov chain(HMC) model based on wavelets.The HMC needs transition matrix(TM), initial state probability (PI)distribution,observation sequence(O),and observation pobability distribution(b). for my case the observation(O) is wavelet coefficients. TM=; PI; b= can be a
Hi all, I want to implement a simple DFA on FPGA using Verilog or VHDL. I read from some papers that the states of the DFA and the state transition table can be stored in BRAM. Anybody here can give me a hint how to do this? Thank you.
If you are familiar with JK Flip-Flops and basic minimization techniques, you should write out all the 'transitions' and then work out which of the four FF's inputs need to be at which logical level to make the transition happen. For example, you want to go from B to A, that means from 1011 to 1010, right? That means the first FF (for the lowest
Hello all, I wonder if you guys maybe can help me out with this small problem, The two lines in the state-table i dont understand how to fill it. I doesn't understand how to think. Thanks in advance
I have also noticed the same during one of my project. I personally feel that there is no need to use two separate processes for implementing a FSM, one for output latching and another for state transition. I have implemented FSMs for UART and HDLC cores in my project and used a single process for updating the outputs and next state. All (...)
I am not aware of an existing one, but you can certainly build one. You can either use a microcontroller, or you can simply build a state-machine using flip-flops.
Gray Coding: Each state in state machine is assigned using gray coding, so that only one bit changes at a time. Advantage: 1) this coding overcomes problems in binary coding like transition to dead, unwanted. 2) This coding is used in 1) Glitch free circuits 2) Asyn FIFO design 3) high speed decoding circuit Disadvantage: Control logic is (...)
Can you clear up some thing. Are you talking about Process/technology: MOS, CMOS, BiCMOS, SiGe.... Or BJT's vs. FET's ? Are you assuming highest frequency to be amplified is your merit of Speed, (Frequency response of the device "S21") or How fast the device can transition from a Low to High state is your merit of speed? (Max data thr
if you implement an async fifo, you must use gray code fifo pointer to aviod metastable or glitch problems. eg: ptr is binary code, when a state change, the 4 bits are not changed at the same time. so there may be some time that ptr turns to be a transition state.(4'b101 -> 4'b110, there may be 4'b100 or 4'b111 states). (...)
To be precise for CMOS static power consumption is less...CMOS as u know is a combination of NMOS and PMOS...which governs the vdd and gnd respectively...due to which power is consumed only during transition state..
ABOUT transition TIME. Delay through a cell is often determined by the cell?s intrinsic delay, load that it is driving, and input transition (slew) ?transition is the time it takes for the pin to change state -----------------------------------------------------------------------OR In ASICs, the delay of a cell is (...)
Hi all, I am looking for a technique that explains how I can describe the transition Function of a system which has the following property: A transition from present state to next state exists if hamming distance between two states is 1. Best Regards, KH
In the theory of computation, a Mealy machine is a finite state machine (and more accurately, a finite state transducer) that generates an output based on its current state and an input. This means that the state diagram will include both an input and output signal for each transition edge. In contrast, the (...)
Hi Can you guys have a look through the state transition diagram for the asynchronous SR FlipFlop that I came up with. state X stand's for undefinied/don't care. state 11 is missing from the diagram because this state is never reached by the FF. state 01 for example means Q = 0, /Q (...)