TMD4903 Datasheet, PDF (46/86 Pages) ams AG – Color and Proximity Sensor Module with mobeam

TMD4903− RegisterDescription
Figure 56:
Configuration Register Five
Configuration Register Five (CFG5 0xAD)
7
6
Reserved
5
4
LONG_LTFSTOP_
DISCARD_ALS
Reserved
3
2
1
DISABLE_IR_ _{PROX_FILTER_} PROX_FILTER_
CORRECTION _DOWNSAMPLE
SIZE
0
PROX_
FILTER
Field
Bits
Description
Reserved
7:6 Reserved.
Long Disruption Discard ALS. Aborts ALS integration that is
disrupted if the proximity state is entered (sensor field of view is
obstructed) or an IRBeam transmission is executed (long disruption
LONG_LTFSTOP_DISCARD_
ALS
5
while LED is pulsed for an extended duration). Immediately after
proximity mode is exited or IRBeam transmission is complete, a new
ALS integration is started. When restarting ALS, this function ignores
wait configuration, which may cause more ALS measurements to
occur than expected.
Reserved
DISABLE_IR_CORRECTION
4 Reserved.
Disable IR Correction. Default is 1. If bit is 0, then calculate
3 IR=(R+G+B-C)/2 and store R'=R-IR, G', B', and C' in the color DATA
registers.
PROX_FILTER_
DOWNSAMPLE
PROX_FILTER_SIZE
Proximity Filter Downsample. If PROX_FILTER = 1, then, if asserted,
PDATA and proximity interrupt check are performed only every n
2 proximity samples. If not asserted, then proximity filtering uses a
moving window: PDATA is updated every cycle and proximity
interrupt is checked every cycle.
Proximity Filter Size. Determines the number of consecutive
proximity samples to average to filter out noise.
1
VALUE
FILTER
0
2 samples
PROX_FILTER
Proximity Filter. If asserted, enables proximity filter functionality.
0 Depending on PROX_FILTER_SIZE, 2 or 4 consecutive proximity
samples are averaged.
Page 46
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ams Datasheet
[v1-12] 2015-May-14