TMD2772

DIGITAL ALS

and PROXIMITY MODULE

TAOS147

E − DECEMBER 2012

23

The LUMENOLOGY

r Company

r

r

Copyright

E 2012, TAOS Inc.

www.taosinc.com

Configuration Register (0x0D)

The configuration register sets the proximity LED drive level, wait long time, and ALS gain level.

Table 12.

6

75

4

2

31

0

CONFIG

Reserved

WLONG

Reset

0x00

PDL

AGL

FIELD

BITS

DESCRIPTION

Reserved

7:3

Reserved. Write as 0.

AGL

2

ALS gain level. When asserted, the 1

AGAIN is scaled by 1. Do not use with AGAIN greater than 8

WLONG

1

Wait Long. When asserted, the wait cycles are increased by a factor 12

WTIME register.

PDL

0

Proximity drive level. When asserted, the proximity LDR drive current is reduced by 9.

Proximity Pulse Count Register (0x0E)

The proximity pulse count register sets the number of proximity pulses that the LDR pin will generate during the

Prox Accum state. The pulses are generated at a 62.5-kHz rate.

Table 13.

Proximity Pulse Count Register

6

75

4

2

31

0

PPULSE

PPULSE

Reset

0x00

FIELD

BITS

DESCRIPTION

PPULSE

7:0

Proximity Pulse Count. Specifies the number of proximity pulses to be generated.