Datasheet Typo

Hi, tommyjames337 .

You have a good point. But I think the most significant data from figure 30 pertains to the 12-bit data result. If my guess is right, the confusion came from figure 28 whereas least significant data caption was introduced. That is pertaining to the 2 LSBs, D1 and D0.

Best regards,
Jo

Hi Nathan,

Thanks for addressing this. I'm not sure I understand your response, however....

I am only concerned with the read sequence (Figure 30) and not confusing it with the graphic from the write sequence (Figure 28).

Are you saying it is NOT a typo, but in fact deliberately calling out the lower byte as the most significant data byte, while also claiming D11, D10, D9, and D8 are ALSO MSBs?

Hi, tommyjames337 .

Just wanted to correct my previous response. I was confused by the typo as well. But upon checking it with the product owner, you are actually correct. That is a datasheet error. The second byte should be labeled "Least Significant Byte" instead of "Most".

That figure shows the I2C data frames when writing from the Conversion Result Register, which is 2 bytes long. The I2C standard dictates that each byte is appended by an ACK/nACK bit (an extra SCL pulse after the byte is clocked out). That means for registers that are >1 byte long like this Conversion Result Register, the register is split across two bytes, each with their own ACK/nACK bit.

The Most Significant Byte comes out first and contains D15 - D8. The Least Significant Byte comes out second and contains D7-D0. Feel free to reach out if it still confuses you. 

Thank you and regards,
Jo

Thank you so much for looking it over again, Jo. That's what I figured. I just wanted to make sure it really worked that way. I appreciate your time and help!

Best,

Tommy