Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Recent content by Garbielhijo

  1. G

    question about the low power design strategy

    Search for Clock domains and switching. It can help you to inderstand some techinics to reduce the power consumption.
  2. G

    how to reduce transition time

    In general the soluciont is to reduce capacitance, reduce resistence resistence or increse the current capability of the driver, this is don by: Resize the source gate (increase the current capability, be careful with electromigration) Redude fanout (reduce the capacitance) Add...
  3. G

    About scan Mbist and BSD design!!

    First you must insert your MBist after this, before you insert the boundary scan you mus decalre the new instruction for the TAP and the declaration of the Data Register asociated for the Tap instruction. (in the Data Register you add de activation, status and other functions you need for you...
  4. G

    WARNINGs about Operating condition in Astro??

    have you tried verify the existence of the 3 basic libraries: WC, NC and BC (Worst, normal and Best case). Those are PVT (process, voltage and temperature) variants of the same library and your vendor must provide it. I don't remember the commands for astro. You can have a good help if access...
  5. G

    problem with vcd file

    simulation vcd dumpvars I use a littler bit of Astro Rail for power analysis, is good for this task but I used it just for digital analysis. All the analog section was implemented as a hard macro with a model for the power and switching.
  6. G

    How important is the selection of scan_in / scan_out pairs?

    Re: scan chain help You can assign an IO port in a shared function (Scan_in and data_in or Scan_out and data_out) just indicating the start and end point of a chain. If you don't do this the DFT compiler will create the specific pins for Scan_in and Scan_out. Also if you have a constraint for...
  7. G

    Does rom, ram need to connect to analog power ring?

    Re: rom, ram power connect If you have a complex design and it generates a lot of noise you can put the memory in a different power ring. If your design have an analog block and a memory block is high recommend to isolate the analog from the rest of the circuit (it means the memories can be...
  8. G

    IO power pad and Core power pad with different voltage?

    The power for the core and pads are made by the diferents rings in the power pads. You must use pads with the corrensponding rings (i.e. IO65_33 or IO65_18, it depends of your librarys, Vdd18, Vdd33). When you are conecting the power straps and rails dont forget to asign it to the correct net...
  9. G

    How to increase the length of each scan chain in DFT?

    Re: DFT help The constraints of length of a chain is not a prioritity constraint. If you have low coverage check for Testability issues for example: Not reset controlability. Clock gatting Clock domains Latches If you avoid this problems your coverage will increase. All...

Part and Inventory Search

Back
Top