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Recent content by leacom

  1. L

    USB Blaster download cable design

    usb blaster circuit diagram there is not a RESET signal in the jtag_logic.vhd, so the state machine does not have a initial state. will it be ok?
  2. L

    power from pc parallel port

    how can i get a 3.3v power supply from pc parallel port? the port must function correctly at the same time
  3. L

    Can you implement 10BASE-T transceiver using FPGA?

    10BASE-T transceiver is it possible to implement an Ethernet 10BASE-T transceiver using a FPGA by select some type IO, such as LVDS? where can i find some materials about 10BASE-T transceiver design? thx!
  4. L

    Can you implement 10BASE-T transceiver using FPGA?

    10BASE-T transceiver is it possible to implement an Ethernet 10BASE-T transceiver using a FPGA by select some type IO, such as LVDS? where can i find some materials about 10BASE-T transceiver design? thx!
  5. L

    How to install and use ISR ?

    how to use ISR? i'v got a ISR, how can i install it? thx in advance!
  6. L

    digital or analog phase sensitive detector

    which one has better noise performance? anyone can suggest some forms of digital phase sensitive detector thanks in advance
  7. L

    how to use the extended program space in ti's 5402

    ti's 5402 totally has 1M program space, but only 64k per PAGE i want to put some data in the upper program space, so the extended PAGE is necessary. what should i do? any examples of .cmd file? thanks
  8. L

    clock recovery on ethernet

    a ethernet interface chip, like 8139, 8019... when it receiving data, how does it recover the synchronous clock? is there a pll ? any idea ?
  9. L

    square waveform->sine waveform

    square to sine any advice? about 100kHz, little phase error is preferred thanks in advance
  10. L

    Is there a mbr existing in a U disk?

    file system on flash i have read the spec of fat from MS, but mbr isn't mentioned is there a mbr existing in a U disk? anything about the data structure of a U disk is preferred thx!
  11. L

    ethernet collision detecting

    a ethernet interface chip how to detect the collision? any idea about the practical circuit? it seems a pure digital circuit cannot do it thanks
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