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Recent content by cfriend

  1. cfriend

    LVDS in altera stratix II FPGA

    Hi, all I want to use altera stratix II FPGA as an LVDS receiver/transmiter in my design, who could supply some reference design on board level, thanks in advance.
  2. cfriend

    Which is the best software for PCB design?

    diptrace pcb compoennt disapear allegro SPB
  3. cfriend

    What do we mean by 2n prefetching architecture?

    2n prefetching pls refer to DDR memory datasheet, it may be help you
  4. cfriend

    Schematics of usb to serial and serial to usb circuits

    usb to serial you can use FT2232C to implement it
  5. cfriend

    whats the difference between Concept HDL and Capture CIS?

    concept hdl tutorial Concept HDL is from former cadence, match with allegro Capture CIS is from former orcad, match with orcad layout now cadence purchase orcad, so they are integrated in cadence SPB package
  6. cfriend

    whats the difference between Concept HDL and Capture CIS?

    concept hdl Concept HDL is from former cadence, match with allegro Capture CIS is from former orcad, match with orcad layout now cadence purchase orcad, so they are integrated in cadence SPB package and many people like to use Capture CIS for schematic design and allegro for PCB layout
  7. cfriend

    how to translate hex into binary by vhdl

    hex to binary vhdl do you want to translate hex into binary in VHDL fomat? such as assembler -> hex file -> binary in VHDL format, and then run the code in FPGA or CPLD use for debuging your microprocessor which is implemented in FPGA or CPLD?? Added after 1 minutes: I used one c code...
  8. cfriend

    how to interface between 3.3v to 5v?

    5v 3.3v if you used ADG3304, pls note it driver ability,thx
  9. cfriend

    Can I use clock with frequency lower than 125 MHz for DDR2 ?

    DDR2 clock frequency I used DDR2 in 100MHz, it is ok
  10. cfriend

    Which RTOS is the best around?

    which rtos is best?? try to eCos
  11. cfriend

    i2c over parallel port

    this may be helpful for your design, thanks
  12. cfriend

    JTAG pins as General I/O

    assignment->Device..->Device&Pin Options..->Dual-Purpose Pins
  13. cfriend

    Looking for a advice about ADV7190

    maybe you can mail to ADI or call ADI support
  14. cfriend

    ddr2 controller downloading to board problem?

    1 what you used is the example_driver? 2 How do you get the "wdata_req" state? by signaltap? 3 How about the local_ready signal? 4 Do you have the DDR2 Controller IP license?
  15. cfriend

    [REQ] ARM7TDMI TEST CHIP

    I know that one, Altera Excalibur Device, but what Ineed is ARM7, Thank you all the same

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