TSL2671

DIGITAL PROXIMITY DETECTOR

TAOS118 − JANUARY 2011

17

The LUMENOLOGY

r Company

r

r

Copyright

E 2011, TAOS Inc.

www.taosinc.com

Persistence Register (0x0C)

The persistence register controls the filtering interrupt capabilities of the device. Configurable filtering is

provided to allow interrupts to be generated after each ADC integration cycle or if the ADC integration has

produced a result that is outside of the values specified by threshold register for some specified amount of time.

Table 7. Persistence Register

6

75

4

Reserved

2

31

0

PERS

PPERS

Address

0x0C

FIELD

BITS

DESCRIPTION

PPERS

7:4

Proximity interrupt persistence. Controls rate of proximity interrupt to the host processor.

FIELD VALUE

MEANING

INTERRUPT PERSISTENCE FUNCTION

0000

−−−

Every proximity cycle generates an interrupt

0001

1

1 proximity value out of range

0010

2

2 consecutive proximity values out of range

...

...

...

1111

15

15 consecutive proximity values out of range

Reserved

3:0

Default setting is 0x00.

Configuration Register (0x0D)

The configuration register sets the wait long time.

Table 8.

6

75

4

2

31

0

CONFIG

Reserved

WLONG

Address

0x0D

Reserved

FIELD

BITS

DESCRIPTION

Reserved

7:2

Reserved. Write as 0.

WLONG

1

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

WTIME register.

Reserved

0

Reserved. Write as 0.