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Occasional Contributor

3 years ago

CYCLONE V - HPS and I2C Peripheral Pin

Hi Community I'm testing the I2C interface embedded in CycloneV - HPS. - However, if I export peripherals signals through the HPS I/O Set everything works pretty well. - But If I switch to FPG...

Generic Io

tehjingy_Altera

Regular Contributor

3 years ago

For the pins routed through the FPGA pins, are there any pull up resistors connected to it?

From the guideline for the I2C pins there should be a pull up resistors for the I2C pins.

https://www.intel.com/content/www/us/en/docs/programmable/683360/18-0/i2c-interface-design-guidelines.html

Regards

Jingyang, Teh

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CYCLONE V - HPS and I2C Peripheral Pin

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