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Recent content by chetanbs

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    DRC/LVS in SOC-Encounter - running drc in encounter

    DRC/LVS in SOC-Encounter i agree with all the above replies. sign off tools are what the industry relies upon and Calibre is considered as one of the best tools for DRC/LVS checks. As told already SoC Encounter used only abstract view i.e., LEF it might not capture all the DRC rules. Hence the...
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    how to use Cadence Voltage Storm for Power and Rail Analysis

    Voltage Storm usage Hello, Can anyone tell me how to use Cadence Voltage Storm for Power and Rail Analysis? I have this database from Magma (DEF, LEF and GDS) on which I need to perform the power and rail analysis using Voltage Storm. Whats the flow to achieve the same? Thanks in advance...
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    Problems for practicing MAGMA scripting

    Re: MAGMA Scripting Hello, You can start off by writing some simple scripts like creating a placement blockage of some 3u width all around a macro by taking its box parameters. The same can be extended to create power rings around macros. Thanks and Regards, Chetan
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    What is more preferred in CMOS - NAND or NOR?

    NAND or NOR? In CMOS technology, what type of gates are preferred and why? i.e., NAND based logic or NOR based logic to be precise? which among these two is preferred and why? Trying to get the actual answer for this since long time. Thanks in advance, Chetan
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    Good Digital Design Questions

    digital design question Thanks a lot... a great composition. some questions missing please share them! Also I have one question. Do you have an answer for this? In CMOS technology, what type of gates are preferred and why? i.e., NAND based logic or NOR based logic to be precise? which among...
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    Magma Hierarchical Design Flow

    Hello Can anyone detail about Hierarchical design flow in Magma using Blast fusion and Blast Plan Pro. I have two soft macros whose hierarchy I need to maintain. These two modules have many macros inside them and the top level module which has these two modules also have many macros. Please...
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    Optimization while Set case analysis

    the worst case analysis what i told was with respect to time. as per your question setting "set case analysis" to 0 or 1 is purely dependent on which is the worst path. that is among the two cases at the mux, we must propagate the path which would give the worst case. hope things are clear
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    Optimization while Set case analysis

    set case analysis mux What you have heard is true... Magma takes a rather pessimistic approach in optimizing placement in the sense that it takes the worst case and starts the placement process. Hence care should be taken that we do not over-constrain the design in the sdc, since Magma's...
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    What is Global Routing and Detail Routing?

    Re: Reg: Routing Global routing is focused on resolving congestion and timing issues. Global routing creates net segments and defines the initial routing topologies. The topologies include a layer assignment for each segment of each net. Each net segment is a total contiguous length of...
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    Power reported in Magma is too high

    welcome to edaboard!! thanks a lot for the reply! after a bit of thinking, got that these commands do only analysis and then scale down the power if required. something like a "what-if" kind of analysis!! would not the switching activity defined on data and clocks be too pessimistic in...
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    I need some training material about Magma CTS or Astro CTS ~

    Re: I need some training material about Magma CTS or Astro C for magma CTS you can check out material on molten.magma-da.com you can register and log in to get answers!! bye chetan
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    Power reported in Magma is too high

    Hello, The core power reported by magma for a design is around 1.1W. Is there any way where I can change the power value to say around 0.6W? I have read somewhere that this is possible. Please let me know.... Thanks in advance, Chetan
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    Detailed explanation of the SpareCells

    Re: SpareCells spare cells are used for ECOs. some cells are marked as spare during normal design flow and they are sprinkled all around the die so that they can be used if any minor changes in designs occur- thats what is called ECO in simple words. so ECOs dont have spare cells but they can...
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    Power open during pin tapping in floorplanning

    Re: pin tapping check for port declaration for the pads. also check if the pad pins are associated with power ports correctly
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    Detailed explanation of the SpareCells

    Re: SpareCells what exactly do u mean by pattern value? please elaborate
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