Hi, documents http://www.ti.com/lit/ds/symlink/tmp100.pdf

Hi, I am looking datasheet of temperature sensor But I don't quite understand details given in page 13. I have marked red rectangular sign that I do not understand. anybody know whats the red marks indicate

 

It is not clear what details in page 13 you don't understand.

 

It is not clear what details in page 13 you don't understand.

Can you see rectangular red mark in image post #1
What is a Frame 3 Data Byte 1, Frame 4 Data Byte 2 ?
What is the Frame 4 Data Byte 1 Read Register , Frame 5 Data Byte 2 Read Register ?

 

Yes, I can see the red marks, but I don't understand your question. What the datasheet page is trying to describe is the sequence of operations required to read and write data from a peripheral device. It takes more than one, single byte transfer to do the job.
Frame 3 Data Byte 1 is the 3rd single byte transfer between the I2C master and the peripheral device. It is the first actual data byte as opposed to address, control or status bytes.
Frame 4 Data Byte 2 is the 4th single byte transfer between the I2C master and the peripheral device. It is the second actual data byte