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Si1141/42/43
PS_RATE @ 0x0A
Bit
7
6
5
4
3
2
1
0
Name
Type
Reset value = 0000 0000
PS_RATE
RW
Bit
7:0
Name
PS_RATE
Function
PS_RATE is an 8-bit compressed value representing a 16-bit multiplier. This multiplier,
in conjunction with the MEAS_RATE time, represents how often PS Measurements are
made. For a given proximity measurement period, MEAS_RATE should be as high as
possible and PS_RATE as low as possible in order to optimize power consumption.
Example Values:
0x00: Autonomous PS Measurements are not made
0x08: PS Measurements made every time the device wakes up
(0x0001 x timeValueOf(MEAS_RATE))
0x32: PS Measurements made every 10 times the device wakes up
(0x000A x timeValueOf(MEAS_RATE)
0x69: PS Measurements made every 100 times the device wakes up
(0x0064 x timeValueOf(MEAS_RATE)
Please refer to AN498 “Si114x Designer ’s Guide”, Section 5.4 “Compression Concept.”
ALS_LOW_TH0: ALS_LOW_TH Data Word Low Byte @ 0x0B
Bit
7
6
5
4
3
2
1
0
Name
Type
Reset value = 0000 0000
ALS_LOW_TH[7:0]
RW
Bit
7:0
Name
ALS_LOW_TH[7:0]
Function
ALS_LOW_TH is a 16-bit threshold value. When used in conjunction with
ALS_HI_TH, it forms a window region applied to either ALS_VIS or ALS_IR
measurements for interrupting the host. Once autonomous measurements have
started, modification to ALS_LOW_TH should be preceded by an ALS_PAUSE or
PSALS_PAUSE command. For revisions A10 and below, ALS_LOW_TH uses an 8-
bit compressed format. Refer to AN498 “Si114x Designer ’s Guide” , Section 5.4
“Compression Concept.”
Rev. 1.3
37
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