TSL2521 datasheet(31/81 Pages) OSRAM

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[v3-00] 2022-Dec-21

TSL2521 − Register O ver view

ALS Data Registers

Figure 34:

ALS Data Registers

Note(s):

1. Return to the Register Map (0x95, 0x96, 0x97, 0x98).

ALS_STATUS2 Register

Figure 35:

ALS_STATUS2

Note(s):

1. Return to the Register Map (0x9B).

Addr

Bit

Field

Reset

Type

Description

0x95

7:0

ALS_DATA0[7:0]

ALS Data Registers

In order to update ALS Data Registers ALS_STATUS

must be read first. The ALS channel data is stored

in two 8-bit registers and shall be interpreted as

16-bit data across 2 registers. All ALS data samples

stored are generated in the same integration cycle.

Reading these bytes consecutively (low byte

before high byte) ensures that the data is

concurrent. The data, stored in the ALS_DATA

registers, is obtained from a 26-bit wide result

buffer depending on settings of ALS_SCALE in

MEAS_MODE0 and ALS_MSB_POSITION in MEAS_

MODE1. The ALS_STATUS register indicates

whether the ALS data is scaled or unscaled. In case

ALS_MSB_POSITION is exceeded, data is 0xFFFE. In

case of analog saturation, data is 0xFFFF.

0x96

7:0

ALS_DATA0[15:8]

0x97

7:0

ALS_DATA1[7:0]

0x98

7:0

ALS_DATA1[15:8]

Addr: 0x9B

ALS_STATUS2

Bit

Field

Reset

Type

Bit Description

7:4

ALS_DATA1_GAIN_STATUS

Contains gain for data in ALS_DATA1 registers.

3:0

ALS_DATA0_GAIN_STATUS

Contains gain for data in ALS_DATA0 registers.

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