TCS3772

COLOR LIGHT-TO-DIGITAL CONVERTER

with PROXIMITY SENSING

TAOS145B − SEPTEMBER 2012

22

r

r

Copyright

E 2012, TAOS Inc.

The LUMENOLOGY

r Company

www.taosinc.com

Persistence Filter Register (0x0C)

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

provided to allow interrupts to be generated after each integration cycle or if the integration has produced a result

that is outside of the values specified by the threshold register for some specified amount of time. Separate

filtering is provided for proximity and the clear channel.

Table 11. Persistence Filter Register

6

75

4

APERS

2

31

0

PERS

PPERS

Reset

0x00

FIELD

BITS

DESCRIPTION

PPERS

7:4

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

FIELD VALUE

INTERRUPT PERSISTENCE FUNCTION

0000

Every proximity cycle generates an interrupt

0001

1 proximity value out of range

0010

2 consecutive proximity values out of range

...

...

1111

15 consecutive proximity values out of range

APERS

3:0

Clear Interrupt persistence. Controls rate of Clear channel interrupt to the host processor.

FIELD VALUE

INTERRUPT PERSISTENCE FUNCTION

0000

Every RGBC cycle generates an interrupt

0001

1 clear channel value outside of threshold range

0010

2 clear channel consecutive values out of range

0011

3 clear channel consecutive values out of range

0100

5 clear channel consecutive values out of range

0101

10 clear channel consecutive values out of range

0110

15 clear channel consecutive values out of range

0111

20 clear channel consecutive values out of range

1000

25 clear channel consecutive values out of range

1001

30 clear channel consecutive values out of range

1010

35 clear channel consecutive values out of range

1011

40 clear channel consecutive values out of range

1100

45 clear channel consecutive values out of range

1101

50 clear channel consecutive values out of range

1110

55 clear channel consecutive values out of range

1111

60 clear channel consecutive values out of range