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Altera_Forum's avatar
Altera_Forum
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15 years ago

I2C Woes, Opencore and Terasic

I've been trying to get a functional I2C bus in my design for a while now with no luck. I've tried my own and a few open source cores. ALL of them have the same problem. I never receive ACKs. I canno...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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P.S.: The I2C standard requires I2C devices to filter spikes at both bus lines. I'm missing this feature from the I2C core itself, however.

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That is very strict. Do you know of any core that does this?

If the I2C device(s) are on on the same board or in the same case, I wouldn't bother. I would not even bother if it was over a cable of xx meter, as long as the cable is well designed.