Problem of MAX II EPM570T UFM with I2C interface

Programmable Devices

CPLDs, FPGAs, SoC FPGAs, Configuration, and Transceivers

Problem of MAX II EPM570T UFM with I2C interface

1,029 Views

Hello, everyone!

I'm currently applying EPM570T100C5, and using its user flash memory(UFM) to store parameters.

I used the i2c megafuction as the communication interface between the DSP master and UFM. But the I2C megafuction did not work well. I used an oscilloscope to watch the waveforms and find that usually the I2C megafuction did not acknowledge the master's sending bytes, such as the slave address and data. But accidently the I2C megafuction worked normally, and the acknowledges can be detected.

My program works well because if I changed another I2C slave device such as DAC chip the acknowledge was received correctly.

So, can anyone tell me what's the problem? Is it the wrong with the I2C megafuction itself? I will be very grateful if someone give sone tips!

Thank you very much! Best wishes!

Link Copied

0 Replies

Community support is provided Monday to Friday. Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.