ADP5501

Rev. 0 | Page 23 of 28

Table 15. Register 0x08, Level 2 (Office) Dim Current (OFFICE_DIM)

Bit

Name

R/W

Description

7

Not used

6 to 0

OFFICE_DIM

R/W

Dim current setting for the backlight when BL_LVL is at Level 2 (office).

See Figure 16 for the backlight current vs. sink code relationship.

Table 16. Register 0x09, Level 3 (Dark) Maximum Current (DARK_MAX)

Bit

Name

R/W

Description

7

Not used

6 to 0

DARK_MAX

R/W

Maximum current setting for the backlight when BL_LVL is at Level 3 (dark).

See Figure 16 for the backlight current vs. sink code relationship.

Table 17. Register 0x0A, Level 3 (Dark) Dim Current (DARK_DIM)

Bit

Name

R/W

Description

7

Not used

6 to 0

DARK_DIM

R/W

Dim current setting for the backlight when BL_LVL is at Level 3 (dark).

See Figure 16 for the backlight current vs. sink code relationship.

Table 18. Register 0x0B, Backlight Current Value (BL_VALUE)

Bit

Name

R/W

Description

7

Not used

6 to 0

BL_VALUE

R

Read-only register that contains the present value to which the backlight is programmed.

Table 19. Register 0x0C, Light Sensor Comparator Configuration (ALS_CMPR_CFG)

Bit

Name

R/W

Description

7 to 5

FILT

R/W

Light sensor filter time.

000 = 0.08 sec.

001 = 0.16 sec.

010 = 0.32 sec.

011 = 0.64 sec.

100 = 1.28 sec.

101 = 2.56 sec.

110 = 5.12 sec.

111 = 10.24 sec.

4

FORCE_RD

R/W

Forces the light sensor comparator to perform a single conversion.

This bit is cleared by the internal state machine once the conversion is complete.

3

L3_OUT

R

0 = ambient light is greater than Level 3 (dark).

1 = the light sensor comparator has detected a change in ambient light from Level 2 (office) to Level

3 (dark).

2

L2_OUT

R

0 = ambient light is greater than Level 2 (office).

1 = the light sensor comparator has detected a change in ambient light from Level 1 (daylight) to

Level 2 (office).

1

L3_EN

R/W

0 = disable Comparator L3_CMPR .

1 = enable Comparator L3_CMPR. If automatic backlight adjustment is required, BL_AUTO_ADJ

must be set also.

0

L2_EN

R/W

0 = disable Comparator L2_CMPR.

1 = enable Comparator L2_CMPR. If automatic backlight adjustment is required, BL_AUTO_ADJ

must be set also.

Table 20. Register 0x0D, Level 2 (Office) Comparator Trip Point (L2_TRIP)

Bit

Name

R/W

Description

6 to 0

L2_TRIP

R/W

Sets the trip value for Comparator L2_CMPR. If ambient light levels fall below this trip point, L2_OUT

is set. Each code is equal to 4 μA (typical). Full scale is 1000 μA (typical).