Datasheet MAX30102 (Maxim) - 21

MAX30102 High-Sensitivity Pulse Oximeter and Heart-Rate Sensor for Wearable Health
Multi-LED Mode Control Registers (0x11–0x12) REGISTER B7 B6 B5 B4 B3 B2 B1 B0 REG POR ADDR STATE R/W
Multi-LED SLOT2[2:0] SLOT1[2:0] 0x11 0x00 R/W Mode Control Registers SLOT4[2:0] SLOT3[2:0] 0x12 0x00 R/W In multi-LED mode, each sample is split into up to four time slots, SLOT1 through SLOT4. These control registers determine which LED is active in each time slot, making for a very flexible configuration.
Table 9. Multi-LED Mode Control Registers SLOTx[2:0] Setting WHICH LED IS ACTIVE LED PULSE AMPLITUDE SETTING
000 None (time slot is disabled) N/A (Off) 001 LED1 (Red) LED1_PA[7:0] 010 LED2 (IR) LED2_PA[7:0] 011 None N/A (Off) 100 None N/A (Off) 101 Reserved Reserved 110 Reserved Reserved 111 Reserved Reserved Each slot generates a 3-byte output into the FIFO. One sample comprises all active slots, for example if SLOT1 and SLOT2 are non-zero, then one sample is 2 x 3 = 6 bytes. The slots should be enabled in order (i.e., SLOT1 should not be disabled if SLOT2 is enabled). www.maximintegrated.com Maxim Integrated │ 21