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Altera_Forum's avatar
Altera_Forum
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16 years ago

about the tri internel

hi:

I want to connect my FPGA(cyclone ep1c6240c8) with my 51mcu .and there are adc and dac in my fpga board . I want to build a system in fpga to control my data fle.such as I can use ad and store ad data in my ram.and i can get the data from ram through fpga.but I know that cyclone can't build tri internal. So how can i do that. how can I use my ADC as a module as peripherals of my mcu and can communciate with other module ??

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  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    --- Quote Start ---

    I know that cyclone can't build tri internal

    --- Quote End ---

    That's right, because no respective hardware exists in a FPGA. FPGA internal connections are basically oneway.

    But you can, of course use internal tristate functions in a behavioral logic description. They are converted to multiplexers by the design compiler, achieving the same logical behaviour as a tristate hardware.

    So I don't exactly understand, what's your problem in connecting data from different sources in a FPGA. I don't see a particular restriction for your project.