ADP5588

Rev. A | Page 21 of 28

COMPARATOR REGISTER DESCRIPTIONS

Table 37. CMP_CFG_STAT—Register 0x30 (Comparator Configuration and Status Register)

Field

Bit

Description

CMP2_L3_OUT

7

Sensor 2 Comparator L3 output.

0: Ambient light is greater than Level 3 (dark).

1: L3_CMP has detected a change in ambient light from Level 2 (office) to L3 (dark).

CMP2_L2_OUT

6

Sensor 2 Comparator L2 output.

0: Ambient light is greater than Level 2 (office).

1: L2_CMP has detected a change in ambient light from Level 1 (outdoor) to L2 (office).

CMP1_L3_OUT

5

Sensor 1 Comparator L3 output.

0: Ambient light is greater than Level 3 (dark).

1: L3_CMP has detected a change in ambient light from Level 2 (office) to L3 (dark).

CMP1_L2_OUT

4

Sensor 1 Comparator L2 output.

0: Ambient light is greater than Level 2 (office).

1: L2_CMP has detected a change in ambient light from Level 1 (outdoor) to L2 (office).

CMP2_IEN

3

Sensor 2 comparator interrupt.

0: Interrupt disabled.

1: Interrupt enabled.

CMP1_IEN

2

Sensor 1 comparator interrupt.

0: Interrupt disabled.

1: Interrupt enabled.

CMP2_EN

1

Sensor 2 comparator input.

0: Input disabled.

1: Input enabled.

CMP1_EN

0

Sensor 1 comparator input.

0: Input disabled.

1: Input enabled.

Table 38. CMP_CONFG_SENS1—Register 0x31 (Sensor 1 Comparator Configuration Register)

Field

Bit

Description

[7:6]

Not used.

FILT (2-0)

[5:3]

Programs the number of consecutive measurements required to transition the L2 and L3 levels.

FILT

Number Required

ApproximateTime (sec)

000

1

0.08

001

2

0.16

010

4

0.32

011

8

0.64

100

16

1.28

101

32

2.56

110

64

5.12

111

128

10.24

FORCE_RD

2

1: Forces a read of the light sensor; reset by the internal state machine after conversion is complete and

L2_OUT and L3_OUT are valid.1

L3_EN

1

1: Enables the L3 comparator for Sensor 1 input.

0: Disables the L3 comparator for Sensor 1 input.

L2_EN

0

1: Enables the L2 comparator for Sensor 1 input.

0: Disables the L2 comparator for Sensor 1 input.

Note that the L3 comparator has priority over the L2 comparator.