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Altera_Forum's avatar
Altera_Forum
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14 years ago

Yes No question (Using FPGA as a wire)

1-Can I use FPGA, just as a wire, to carry a bidirectional line like I2C SDA from one pin of the FPGA to the other pin of the FPGA. In the FPGA there will not be an i2c master or slave it will just r...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

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Yes, you can

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Unfortunately, I have to contradict. All existing physical level I2C repeaters or level converters are based on special hardware features, please review the respective datasheets. A similar function can't be implemented with regular FPGA IOs as far as I understand.

A repeater on a logical protocol level would be possible, but not an easy design.

P.S.:

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Any kind of buffer has to know the data direction.

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That's exactly the point.