For the chip AFE4405, We have some questions in Dual PD Mode as follows:
1. From "figure 50. Timing Scheme for Dynamic Selection of the Dual PD Within the PRF Cycle ", we can see that PD1 samples LED2 and LED3, and PD2 samples LED1 and LED1_amb(LED1 ambient light). The question is if PD1 is used for oxygen measuring, thus LED2 and LED3 have to use infrared and red light, while ambient light is sampled by PD2. If these two PDs are different, the sampled ambient light would have some problem. Also, based on this design, LED1 can only be used as green light specific for heart rate measurement, I was wondering whether the sampling timing sequence can be altered.
2. If following 3LED mode and only use one PD, can we put this PD at the position of PD1 and PD2 at the same time?
