This mode is enabled by setting the auto trigger bit through a SPI register write and the DA data outputs start in low resolution for 2¹³ samples. Immediately following completion of transmission of the last low resolution sample, the outputs automatically start transmitting 2¹⁰ high-resolution samples without the need for external trigger ensuring maximum efficiency. Any input signal on the TRIGGER pins is ignored and the TRDY flag will go high only for one clock cycle with the start of the high-resolution data.

The output flag HRES is aligned with the 2^N high-resolution output samples and the parameter N can be changed until the next output cycle starts again with low-resolution output data.

Figure 8-18 Auto Trigger Mode Timing Diagram