TMP1075: I2C Data line

Navroop Singh

Part Number: TMP1075

I am looking at I2C communication between TMP1075 and MCU. After ACK , Data line go high and low when clk signal is low. I don't see any functional issue but checking if this normal or need to look in detail in this can cause issues.

over 2 years ago

0 Nicole Khoury over 2 years ago

TI__Expert 8940 points

Hi Navroop,

Thank you for posting to the Sensing forum.

I do not believe this is a cause for concern, especially since you are not observing any functional issues. Please let us know if you have any further questions.

Best regards,

Nicole

0 Navroop Singh over 2 years ago in reply to Nicole Khoury

Prodigy 10 points

Also that data line toggles after ACK signal and before TMP1075 starts sending data. Is this happens as host releases data bus and then TMP1075 takes over ? Just want to know what exactly happens here.

+1 Nicole Khoury over 2 years ago in reply to Navroop Singh

TI__Expert 8940 points

Hi Navroop,

Yes that is correct. This appears to be normal behavior following the ACK signal, as SDA is released and goes high as it returns to its idle state.

Best regards,

Nicole

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TMP1075: I2C Data line