TMD4903 datasheet(24/86 Pages) OSRAM

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Datasheet, Public

Page 23

[v2-00] 2022-Nov-03

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TMD4903 − Register Description

Enable Register (ENABLE 0x80)

Enable has fields that power on the device and enable the

functions. Before enabling any functions, all of the bits

associated with each function must be set. Changing control

Figure 26:

Enable Register

76543210

IBEN

Reserved

PIEN

AIEN

WEN

PEN

AEN

PON

Field

Bits

Description

IBEN

IRBeam Enable. When asserted, the LED driver pin (LDR) is controlled by the

IRBeam state machine. Proximity is suppressed. ALS continues in the

background except when IBUSY = 1 (ISTATUS register).

Reserved

Reserved. Bit must be set to 0.

PIEN

Proximity Interrupt Enable. When asserted permits proximity interrupts to

be generated, subject to the proximity thresholds and persistence filter.

AIEN

ALS Interrupt Enable. When asserted permits ALS interrupts to be

generated, subject to the ALS thresholds and persistence filter.

WEN

Wait Enable. This bit activates the wait feature. Writing a 1 activates the wait

timer. Writing a 0 disables the wait timer.

PEN

Proximity Enable. This bit activates the proximity function. Writing a 1

enables proximity. Writing a 0 disables proximity.

AEN

ALS Enable. This bit activates the ALS/Color functionality. Writing a 1

enables ALS/Color. Writing a 0 disables ALS/Color.

PON

Power ON. This bit activates the internal oscillator to permit the timers and

ADC channels to operate. Writing a 1 activates the oscillator. Writing a 0

disables the oscillator and clears IBEN, PEN, and AEN. Only set this bit after all

other registers have been initialized by the host.

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