I2C Protocol ACK

We are having difficulty doing a single write and read using the i2c bus on a ADAU1761 chip.

If you look at page 39 of http://www.analog.com/static/imported-files/data_sheets/ADAU1761.pdf, you will see that the figure 49 and 51 don't match.

On figure 49, the transaction finishes with a Ack Slave and Stop.

On figure 51, the transaction doesn't finish with an Ack Slave, just a Stop.

Which one is right?

Thanks,

Bert

Audio Signal Processors

SigmaDSP Audio Processors

adau1761