24.4.3.1 Register Communication

After the SCD/sensor communication has been set up, the additional setup for reading registers can be completed. CTS must be set up before any communication occurs. CTS selects between only register communication, which is communication between host and client registers, or command communication, which is a bus style communication. The client ID must also be set to make sure the exact device is communicated with; this is done in the CLNTID register.