ALS INTERVAL: Ambient light measurement: time interval setting (repetition time) for FREE-RUNNING mode

R/W-Register 0x86

Bit

7

6

5

4

3

2

1

0

not used

time-interval

default XXXXX

010

500 ms

000

100 ms

001

200 ms

010

500 ms

011 1000 ms

100 2000 ms

PART_ID: Part number and revision Identification

R-Register 0x8A

Bit

7

6

5

4

3

2

1

0

Part number ID

Revision ID

1001

0100

MAN_ID: Manufacturer Identification

R-Register 0x8B

Bit

7

6

5

4

3

2

1

0

Manufacturer Identification

0000

0011

ALS_DATA_LSB: Ambient light measurement data (0x8C: LSB)

The result of the ambient light sensor is a 16bit word with MSB and LSB. It is stored in two registers. The binary data can be

converted directly to decimal „lx“ values (max. 65535lx).

R-Register 0x8C

Bit

7

6

5

4

3

2

1

0

LSB data

default

00000000

ALS_DATA_MSB: Ambient light measurement data (0x8D: MSB)

R-Register 0x8D

Bit

7

6

5

4

3

2

1

0

MSB data

default

00000000

ALS_PS STATUS: Status of measurement data for ambient light sensor (ALS) and proximity sensor (PS)

After the measurement data is available in the register (0x8E), the corresponding statusbit (bit #6 for ALS; bit #0 for PS) is set to „1“.

After data has been read by the MCU the statusbit is automatically reset to “0” by the SFH 7773.

Bit #7 is set „1“, if the measured ALS value is outside the threshold level settings (register 0x96... 0x99). Bit #1 is set to “1” if the

measured PS value is above the threshold level (register 0x93). The status of register 0x8E will always be updated if new

measurement data is available.

R-Register 0x8E

Bit

7

6

5

4

3

2

1

0

ALS

Threshold

ALS

data

Not used

PS LED

threshold

PS LED

data

default

00

0000

00

December 12, 2011

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