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Recent content by Nir Dahan

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    Best FSM State Encoding for Low-Power Design

    just a note or two: splitting FSMs is different than state enumerations. on splitting FSMs: https://asicdigitaldesign.wordpress.com/2007/09/08/a-concise-guide-to-why-and-how-to-split-your-state-machines/ on FSM enumeration...
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    Is there any problem in a design with a lot of wires?

    If you got a lot of wires criss crossing the chip it might cause congestion problem (not enough space for a lot of wires that need to go through a specific area). Be especially careful near SRAM blocks since a lot of times routing above them is not allowed and they create a "hole" in the floor...
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    CObinatinal feedback loop

    in some special cases combo loops are very beneficial. check this link out: https://asicdigitaldesign.wordpress.com/2008/03/07/cyclic-combinational-circuits/ ND https://asicdigitaldesign.wordpress.com/
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    Dual edge counter in VHDL?

    fpga dual edge ff one could create a dual edge flop as described here: https://asicdigitaldesign.wordpress.com/2007/07/31/the-double-edge-flip-flop/ or here: https://asicdigitaldesign.wordpress.com/2008/09/22/another-look-at-the-dual-edge-flip-flop/ ND. https://asicdigitaldesign.wordpress.com
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    10bit LFSR design - request for resources

    10bit LFSR design There is a proof in GF theory (the math behind LFSR) that for any given length, there exists a maximal length LFSR - i.e. one that is 2^n-1 long ND. https://asicdigitaldesign.wordpress.com/
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    Using clock as data - Drive a signal only on +ve clock phase

    Please try reading this: https://asicdigitaldesign.wordpress.com/2007/08/09/driving-a-clock-frequency-signal-from-a-register/ maybe it will help you. It describes a way to drive clock frequency signal without having the clock in the data path. ND. https://asicdigitaldesign.wordpress.com
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    10bit LFSR design - request for resources

    10bit LFSR design All you need is here (page 7): https://www.eng.auburn.edu/~strouce/class/elec6250/LFSRs.pdf ND https://asicdigitaldesign.wordpress.com/
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    16-bit carry select adder..

    carry skip adder vhdl your answers are in this book: https://www.amazon.com/CMOS-VLSI-Design-Circuits-Perspective/dp/0321149017/ref=pd_bbs_sr_1?ie=UTF8&s=books&qid=1228251816&sr=8-1 ND https://asicdigitaldesign.wordpress.com
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    how to finish such a by-4 divider without reset

    just to add a few words. FvM is complete correct - no reset is really necessary. actually in some applications it is recommended to do it without a reset! (because the clock might only be available in a later stage and the asynch reset removal is aligned with a reset synchronizer to the clock...
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    Minimum Of N Numbers using verilog or VHDL

    Re: Minimum Of N Numbers The complexity of the problem is (compare delay)*log2(N) you are basically performing a binary tree (hence log2(N) ) of compare operations (each costing a "compare delay") I have no idea how much of the logic you can compress into a single clock cycle. but make a combo...
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    how to solve the problem: if setup time is not enough?

    Whenever you encounter a problem like "design a divide by ..." this is how you solve it. 1) draw original clock 2) draw target desired clock 3) watch if the new desired clock can be derived from the original clock - this means if the ALL rising edges and the falling edges of the new clock ALIGN...
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    Give some techniques to minimize power consumption

    https://asicdigitaldesign.wordpress.com/category/low-power/ ND
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    NAND gate implementation for a function

    nand gate you can now develop a formula for this problem. it is log2 of n dependent...
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    NAND gate implementation for a function

    nand gate what will be the logic depth then? and what about ab + cd +ef + gh? ND. https://asicdigitaldesign.wordpress.com
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    Help me solve following expressions

    Pls Help 1) - C(A+B') 2) - A xor (B'C) 3) - AC + B'C' 4) - B'+CA' hope I didn't make any mistake

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