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Altera_Forum's avatar
Altera_Forum
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10 years ago

How to read data from adc0804 to fpga

Hi guys

I am beginner in FPGA. I have adc0804 in my circuit. And now I don’t know how to read the data from the adc and store the data on FPGA. I chose to use altera de2 115 board for the FPGA. Any ideas regarding my problem? Thanks in advance

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    adc0804 has a very simple parallel interface.

    For you purpose you can connect the CS pin to ground and DBn, WR, RD pins to any GPIO your board exposes (mind the voltage level compatibility).

    Then you pulse WR and RD signals to convert the analog data and read the digital value on DBn.
  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    Hi Cris72.

    Thanks for your reply. Really appreciate it. I already connect the DBn to LED for the indicator. So, do you mean that I need to connect the LED to GPIO pin in my board? May I know why we should give pulse signal to WR and RD signal? and why should I connect the WR and RD to GPIO? sorry if i asking too many question.

    Thanks in advance.