AM1806: is it possible to reset I2C module only?

Sung-IL

Part Number: AM1806

Dear Champs,

Is it possible to reset I2C0 only in AM1806?

My customer faced I2C communication fail and would like to reset I2C0 port of AM1806 only to minimize impact on all system.

But, when they set IRS bit of ICMDR register, the I2C communication was not recovered and they are doubting if I2C0 was not reset properly.

Could you please let me know how they can reset I2C0 only in AM1806?

their AM1806 is non-OS platform.

Thanks and Best Regards,

SI.

over 6 years ago

0 Yordan Kovachev over 6 years ago

TI__Guru**** 161600 points

Hi,

Yes, it should be possible to reset only the I2C0. See 21.2.10.1 Software Reset Considerations section in the device TRM.

Have in mind the following note:
NOTE: If the IRS bit is cleared to 0 during a transfer, this can cause the I2C bus to hang (I2Cx_SDA and I2Cx_SCL are in the high-impedance state)

Best Regards,
Yordan

0 Sung-IL over 6 years ago in reply to Yordan Kovachev

TI__Mastermind 28755 points

Thanks,

Your answer was very helpful and I found useful wiki for my I2C hang issue.
processors.wiki.ti.com/.../I2C_Tips

Thanks and Best Regards,
SI.

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AM1806: is it possible to reset I2C module only?