Maxim Integrated MAX32664A - Table 5. Format of Received Samples-Spo; Calibration Mode

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Table 5. Format of Received Samples—SpO
2
Calibration Mode
*If the output mode includes the sensor.
**If the output mode includes the algorithm.
DATA SOURCE BYTE INDEX DATA ITEM
# OF BYTES
(MSB FIRST)
DESCRIPTION
MAX30101
(12 Bytes)*
0
LED1
3
IR counter
3
LED2
3
Red counter
6
LED3
3
N/A
9
LED4
3
N/A
Accelerometer
(6 Bytes)*
12 accelX 2
Two's complement. LSB =
0.001g
14 accelY 2
Two's complement. LSB =
0.001g
16 accelZ 2
Two's complement. LSB =
0.001g
HR/SpO
2
Algorithm
(12 Bytes)**
18
Heart rate
2
10x heart-rate value
20
Heart rate
confidence
1
Calculated confidence level
in %
21
SpO
2
2
10x SpO
2
value
23
Algorithm
state
1
Algorithm current state:
0: No object is detected
1: Something is on sensor
2: Another object is detected
3: Finger is detected
24
R
2
10x calculated R value
26
Algorithm
status
1
Algorithm current status:
0: Success
1: Not ready
-1: Something is on sensor
-2: Device excessive motion
-3: No object
-4: Pressing too hard
-5: Object instead of finger
-6: Finger excessive motion
27
Reserved
3
Reserved