TMD4903 datasheet(47/86 Pages) OSRAM

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[v2-00] 2022-Nov-03

TMD4903 − Register Description

Configuration Register Five (CFG5 0xAD)

Figure 56:

Configuration Register Five

Reserved

LONG_LTFSTOP_

DISCARD_ALS

Reserved

DISABLE_IR_

CORRECTION

PROX_FILTER_

DOWNSAMPLE

PROX_FILTER_

SIZE

PROX_

FILTER

Field

Bits

Description

Reserved

7:6

Reserved.

LONG_LTFSTOP_DISCARD_

ALS

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

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

Reserved.

DISABLE_IR_CORRECTION

Disable IR Correction. Default is 1. If bit is 0, then calculate

IR=(R+G+B-C)/2 and store R'=R-IR, G', B', and C' in the color DATA

registers.

PROX_FILTER_

DOWNSAMPLE

Proximity Filter Downsample. If PROX_FILTER = 1, then, if asserted,

PDATA and proximity interrupt check are performed only every n

proximity samples. If not asserted, then proximity filtering uses a

moving window: PDATA is updated every cycle and proximity

interrupt is checked every cycle.

PROX_FILTER_SIZE

Proximity Filter Size. Determines the number of consecutive

proximity samples to average to filter out noise.

VALUE

FILTER

02 samples

PROX_FILTER

Proximity Filter. If asserted, enables proximity filter functionality.

Depending on PROX_FILTER_SIZE, 2 or 4 consecutive proximity

samples are averaged.

TMD4903 Datasheet(PDF) 47 Page - OSRAM GmbH

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