SI1145-M01 Datasheet, PDF (61/70 Pages) Silicon Laboratories – High reflectance sensitivity

Si1145/46/47-M01
ALS_IR_ADC_GAIN @ 0x1E
Bit
7
6
5
4
3
2
1
0
Name
ALS_IR_ADC_GAIN[2:0]
Type
R/W
R/W
R/W
Reset value = 0000 0000
Bit
Name
Function
7:3
Reserved
2:0 ALS_IR_ADC_GAIN[2:0] Increases the ADC integration time for IR Ambient measurements by a fac-
tor of (2 ^ ALS_IR_ADC_GAIN). The maximum gain is 128 (0x7).
For Example:
0x0: ADC Clock is divided by 1
0x4: ADC Clock is divided by 16
0x6: ADC Clock is divided by 64
Note: This parameter available for sequencer revisions A03 or later.
ALS_IR_ADC_MISC @ 0x1F
Bit
7
6
5
4
3
2
1
0
Name
IR_RANGE
Type
RW
Reset value = 0000 0000
Bit
Name
Function
7:6
Reserved
5
IR_RANGE When performing ALS-IR measurements, the ADC can be programmed to operate in
high sensitivity operation or high signal range.
The high signal range is useful in operation under direct sunlight.
0: Normal Signal Range
1: High Signal Range (Gain divided by 14.5)
4:0
Reserved Write operations to this RAM parameter must preserve this bit-field value using
read-modify-write.
Note: This parameter is available for sequencer revisions A03 or later.
Rev. 1.0
61