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Recent content by vkchau

  1. vkchau

    How to set constraints for two outputs

    Hi, anyone help me what constraints should I set to achieve below: 1. For example, my design on Altera FPGA runs at 100MHz, and have two outputs. I want two signals to active at the same time. I mean the time difference between them is less than 1ns. Could I achieve that? 2. If yes, what...
  2. vkchau

    Install Synopsys tools

    Hi all, I'm going to install Synopsys tools (Digital IC Design tools). Can I use Fedora Core 5 (Red Hat Linux) as OS, or I have to use Red Hat Enterprise Linux? Thanks
  3. vkchau

    Help install Synopsys tools

    I'm a technical engineer of University in VietNam. We are going to receive Synopsys tools (Digital, maybe Design Compiler), and they ask me show them Host ID. But I don't know what is configuration of PC, OS. Can I use Fedora Core 5 (Red Hat Linux)? Thanks for your help Added after 1 hours...
  4. vkchau

    Help me figure out why my DSP is freezing

    My DSP is freezing... I think you can use a PC as debugger. First, use PC and Hyper Terminal (available on Windows) to simulate robot and see how your DSP command. And then, use PC as host to control robot. You can find your problems.
  5. vkchau

    radix-2 fft algorithm

    You can read "Digital Sinal Processing" book on Analog Devices (www.analog.com).
  6. vkchau

    16f877 for moving lled matris

    you can search on edaboard, it has an topic about matrix led. I think design for 16f877 is also eqivalent.
  7. vkchau

    89C51 SERIAL COMMUNICATION PROBLEM

    89c51 serial communication If you want to use RS-232 for 100m, actually you can but baudrate must less than 2400bps. I've used to use RS-232 for about 100m@1200bps. And you need to handshake carefully because data can have errors at anytime (but with my design it is not any errors).
  8. vkchau

    GUI for fpga related projects

    I think your mean is how to human can interface with FPGA hardware. You can use keyboard, PC interfacing use RS-232, USB, PCI...
  9. vkchau

    How to do exp() calculation in MSP430 micro-controller?

    If the exponent is small, you can calculate apporximately using Taylor series.
  10. vkchau

    Clock & Data Recovery ???

    you can search ANs on Xilinx website, they have an application note about this topic.
  11. vkchau

    Assembly language used for the TMS320C25

    assembly However this family is old, but I think you can search on TI website and Google about TMS320C2x, you will find assembly instruction set.
  12. vkchau

    Analog VLSI design automation

    I would like to know everything about this. Can I write design in VHDL-AMS, compile, simulate, synthesis, place, route automatically? Thanks.
  13. vkchau

    How to view a html document saved in the 8051 memory?

    Webpage from 8051 As I know, 8051 serial port can transfer any 8-bit binary data, not only ASCII code. So, you can transfer html file into 8051 memory without any problems.
  14. vkchau

    Quality of Digilent FPGA board

    digilent fpga boards Boards from Digilent are good for beginner or advanced user. You can use them to learn something. First, you should download Webpack from Xilinx for free. Second, download all of related documents from www.digilentinc.com, especially reference manual and design. Then, read...
  15. vkchau

    Digilab 2e and dio2 form Digilent

    To use D2E or D2SB from Digilent, you should: 1. Download Webpack from www.xilinx.com 2. Download reference manual and reference designs from www.digilentinc.com. 3. Use Webpack to implement sample designs on D2E, or you can use constrain file in reference design to your design.
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