When customer debug MAX86170B, they got the output data doubled: the format is: tag 1, PPG IR data/tag 1, PPG IR data/tag 2, ...it doesn't match the MAX86170B datasheet description about the output format as below.
After setting 0x0C[bit3]PPG2_PWRDN = '1' the output data can match the data format as below. Setting this bit will disable one of the ADC in MAX86170B. This matches MAX86170B with one channle PD feature.
tag 1, PPG IR data
tag 2, PPG RED data
tag 3, PPG Ambient data
tag 1, PPG IR data
tag 2, PPG RED data
tag 3, PPG Ambient data
. . .
tag 1, PPG IR data
tag 2, PPG RED data
tag 3, PPG Ambient data