TMD3721 datasheet(55/89 Pages) AMSCO

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[v3-00] 2023-May-26

TMD3721 − Register O ver view

For applications with high optical proximity crosstalk (the

emitted IR optical signal appears at the IR sensor), the offset

range can be extended in discrete steps. To determine the best

range extension step for the application, a proximity calibration

cycle is initiated and the resulting proximity offset is captured

in the POFFSET /POFFSET_SIGN registers.

CALIBCFG Register (Address 0xD9)

Figure 75:

CALIBCFG Register

Addr: 0xD9

CALIBCFG

Bit

Bit Name

Default

Access

Bit Description

7:5

BINSRCH_

TARGET

010

Proximity offset calibration result target.

Value

PDATA Target

0 (000)

1 (001)

2 (010)

3 (011)

4 (100)

5 (101)

127

6 (110)

255

7 (111)

511

Reserved

Reserved. Must be set to default value.

PROX_AUTO_

OFFSET_

ADJUST

0RW

If set, then in proximity mode, whenever an ADC

measurement yield zero, the pertinent offset register will

be decreased. Will set the OFFSET_ADJUSTED flag if it

happened. Note that if a diode is disabled, this

mechanism is disabled as well.

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