ADC AD7147 Datasheet problem
The setup bits for CINx_CONNECTION_SETUP and SE_CONNECTION_SETUP are different from each other.

The example on page 18:

STAGE0_CONNECTION[6:0] = 0xFFBF

STAGE0_CONNECTION[12:7] = 0x2FFF

is for the CINx_CONNECTION_SETUP, and matches Figure 29 on that page:



The bullet points on that same page are for a different section, "SINGLE-ENDED CONNECTIONS TO THE CDC" and are for the SE_CONNECTION_SETUP



This is corroborated by table 35 on page 54:



Again, note the difference between CINx_CONNECTION_SETUP and SE_CONNECTION_SETUP.