
Si1141/42/43
4.4. Signal Path Software Model
The following diagram gives an overview of the signal paths, along with the I 2 C register and RAM Parameter bit
fields that control them. Sections with detailed descriptions of the I 2 C registers and Parameter RAM follow.
5
4
3
2
1
PS1_ALIGN
PS_RATE
PS1_ADCMUX
PS_ADC_REC
PS_ADC_GAIN
PS_RANGE
Select
ADC_OFFSET
Offset
0
2
Sum
16
PS1_DATA
Ref.
3
6
Out
Analog
Digital
In
D
Vdd
0x25
0x65
0x75
Enable
D
EN_PS1
GND
PS2_ALIGN
PS_RATE
PS2_ADCMUX
PS_ADC_REC
PS_ADC_GAIN
PS_RANGE
Select
ADC_OFFSET
Offset
0
2
Sum
16
PS2_DATA
Ref.
3
6
Out
Analog
Digital
In
0x25
0x65
Enable
Vdd
GND
0x75
PS3_ALIGN
PS_RATE
EN_PS2
C
PS3_ADCMUX
PS_ADC_REC
PS_ADC_GAIN
C
PS_RANGE
Select
ADC_OFFSET
Offset
0
2
Sum
16
PS3_DATA
Ref.
3
6
Out
Analog
Digital
In
Large IR
Vdd
0x25
0x65
0x75
Enable
EN_PS3
GND
GND
ALS_VIS_ALIGN
ALS_RATE
ALS_VIS_ADC_REC
ALS_VIS_ADC_GAIN
VIS_RANGE
ADC_OFFSET
Offset
Sum
16
ALS_VIS_DATA
B
Analog
Digital
In
B
Enable
GND
Small visible
ALS_IR_ADCMUX
ALS_IR_ALIGN
ALS_RATE
ALS_IR_ADC_REC
ALS_IR_ADC_GAIN
IR_RANGE
EN_ALS_VIS
ADC_OFFSET
Offset
Select
Sum
16
ALS_IR_DATA
0
Small IR
3
Out
Analog
Digital
In
EN_ALS_IR
Enable
A
GND
AUX_ADCMUX
ADC_OFFSET
Offset
A
Select
Sum
16
AUX_DATA
Temperature
sensor
Vdd
0x65
0x75
Out
Analog
Digital
16
In
Enable
EN_AUX
5
4
3
2
1
Figure 14. Signal Path Programming Model
Rev. 1.3
27