TSL2771

LIGHT-TO-DIGITAL CONVERTER

with PROXIMITY SENSING

TAOS100B − FEBRUARY 2011

23

The LUMENOLOGY

r Company

r

r

Copyright

E 2011, TAOS Inc.

www.taosinc.com

Control Register (0x0F)

The Control register provides eight bits of miscellaneous control to the analog block. These bits typically control

functions such as gain settings and/or diode selection.

Table 12.

Control Register

6

75

4

2

31

0

CONTROL

PDRIVE

Resv

Address

0x0F

PDIODE

Reserved

AGAIN

FIELD

BITS

DESCRIPTION

PDRIVE

7:6

LED Drive Strength.

FIELD VALUE

LED STRENGTH

00

100 mA

01

50 mA

10

25 mA

11

12.5 mA

PDIODE

5:4

Proximity Diode Select.

FIELD VALUE

DIODE SELECTION

00

Reserved

01

Proximity uses the CH0 diode

10

Proximity uses the CH1 diode

11

Proximity uses both diodes

Reserved

3:2

Reserved.

Write bits as zero (0:0)

AGAIN

1:0

ALS Gain Control.

FIELD VALUE

ALS GAIN VALUE

00

1

01

8

10

16

11

120

ID Register (0x12)

The ID Register provides the value for the part number. The ID register is a read-only register.

Table 13. ID Register

6

75

4

2

31

0

ID

ID

Address

0x12

FIELD

BITS

DESCRIPTION

ID

7:0

Part number identification

0x00 = TSL27711 & TSL27715

ID

7:0

Part number identification

0x09 = TSL27713 & TSL27717