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37 Threads found on edaboard.com: Counter Ring
Very urgent. I would like know that how can we code a round robin arbiter using a ring counter for token generation means if the token is with first user first priority logic 0 will be enabled and so on.Based on the person who is accessing the resource the corresponding value of the person comes as output of priority encoder and will be decoded ag
I believe that the equivalent circuit is somehow counter-intuitive. It implements a trick and rearranges the circuit to cut the stages at currentless points. The current generated by both Cgd instances is split into two terms each, utilizing Vgd = Vgs - Vds. As far as I see, there's nothing left, the equivalent circuit is actually equivalent.
A CMOS inverter ring will vary a lot with Vdd. About the same ratio as your IDsat (since capacitance changes not much). A bare ring oscillator can be tough to test especially at probe, the edges against bondwire or probe inductance can make the ring unstable (kill oscillation, etc.). Well designed ROs may have a high #bit (...)
Please kindly find the schematics as enclosed. Well, the intention is the usage of the 7476 flipflops as disordered rign counter as described in the first post. I don't know what your point is about "bad asynchronous circuit". I'd be thankful if you kindly explain.
Braindead stupid and easy method (and thus awesomely reliable, because it does not presuppose brain settings): - implement in real hardware - export signal to outside of fpga - view signal with your favorite scope - analyze signal with your favorite frequency counter The ButButButILoveMySimulator method: - plonk SAVE attributes on things & stuff s
Hi, I'm a newbie in VHDL. I'm trying to implement 4 bit ring counter using DFF. I'm using one preset DFF and other FF has a reset for initialzing purpose. I could able to preset/reset the value but not able to shift the value in the Flip flop ring after reset/Preset. I'm using Xlinx ISE 14.3 . I'm facing problem while simulating the (...)
I am trying to design an 8-bit self correcting ring counter whose states are 11111110, 11111101,.......,01111111. This includes reset and enable inputs, where the counter goes to the initial state when reset is asserted and counts only if enable input is asserted. Now I think my code is correct except I am not sure if it's self correcting
The master device ( FPGA ) must manage byte allocation by a simple ring counter modulo-4 ( 0 to 3 ), on reading and writing process. Nothing to do on slave side. +++
Hi. I am trying to build a 3 phase driver circuit using a XR2209 osc chip as the clock source, feeding a CD4017B counter looped at the third output to provide a 'johnson' ring counter. The first two stages of the circuit work fine, but when I tried to connect the ULN2003an darlington array to the counter, I only get very low (...)
i am using differential ring oscillator as my vco....its output is given as clock input for counter ....now problem is what should i do with the other terminal of my vco...which is differential in nature
If an 8-bit ring counter has an initial state 10111110, what is the state after the fourth clock pulse? A. 11101011 B. 00010111 C. 11110000 D. 00000000 When I did this, I got an answer A. What i did is right?? can anyone explain me? 1. For the 1st clk pulse, it would be, 01011111 2. For the 2nd clk pulse, it would be, 10101111 3. For
Hi I wan't to control around 100 RGB led (not an LED matrix) and need to obtain different colours. Now I am trying the multiplexing by switching the common anode of LED using a ring counter and applying the 3 channel PWM from MCU. But for me, I cannot sacrifice the LED brightness, I want maximum brightness. Also multiplexing the PWM channels is no
A ring counter wants a particular initial load-value or you can get spurious states especially in very long ones. I'd recommend using FFs with both set and clear, tying (say) all but bit 0 resets to a common reset and the sets inactive, and bit 0 opposite (getting a single marching-one) or doing this by using N-1 reset-only 'flops and one set-on
Hi all, I need a ring counter with 50 latch, that worked with clock @ frequency=4.3Ghz,i use c2mos latch but it can't work correct. one c2mos latch work correct at 4.3GHz but loop of 50th of c2mos latch didn't u know any high speed latch??? i don't know why loop can't work.... the image of c2mos latch attached.85706[/ATTA
The counter in a ring oscillator based ADC counts freq_signal x pulse_width_ref or time_period_ref x freq_signal. Now if the counter is 10 bits I am wondering if their ratio should be 1024 for 10 bit resolution. If freq_signal=3khz and freq_ref=4khz, how do i make them work? Shall i use divide by N (...)
The simplest way is the adoption of an oscilator with a frequency 4x higher than required. A ring counter could generate the desired pulses. A PLL based circuit could be tried, despite Im not sure if it works fine with even sclale factor grater than 3x. +++
I was actually trying to create a sub module which uses a D-FF with a set and a reset pin which can be instantiated for the code of ring counter. That is the reason I am using iwx and iwy. All connections to a module need to go through the interface. In your code iwx is simply unconnected and thus has an unknown state.
i need ring counter code in vhdl(structural) can any one help
Hi guys, is there anyway i can implement to freeze data from a ring counter? any guidance? library IEEE; use IEEE.STD_LOGIC_1164.ALL; USE IEEE.STD_LOGIC_UNSIGNED.ALL; entity column_counter is port ( col_out : out std_logic_vector(3 downto 0); rst : in std_logic; clk : in std_logic
I'm having trouble figuring out why the answer to this question is 6 cycles, shouldn't it be 7? could someone explain it to me please? Thanks in advance Q: 7 bit ring counter's initial state is 0100010. After how many clock cycles will it return to the initial state? A: 6 cycles