ADP8860ACPZ-R7 datasheet(30/52 Pages) AD

30 / 52 page

ADP8860

Rev. 0 | Page 30 of 52

Bit Name

Bit No.

Description

CMP_IEN

When the CMP_INT status bit is set after an enabled comparator trips, an interrupt is raised if the CMP_IEN flag is

enabled.

1 = the main comparator interrupt is enabled.

0 = the main comparator interrupt is disabled (the CMP_INT flag continues to assert).

BACKLIGHT REGISTER DESCRIPTIONS

Configuration Register (CFGR)—Register 0x04

Table 16. CFGR Bit Map

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Reserved

SEL_AB

CMP2_SEL

BLV

Law

FOVR

Table 17. Bit Descriptions for the CFGR Register

Bit Name

Bit No.

Description

N/A

Reserved.

SEL_AB

1 = selects the second phototransistor (CMP_IN2) to control the backlight.

0 = selects the main phototransistor (CMP_IN) to control the backlight.

CMP2_SEL

1 = the second phototransistor is enabled; the current sink on D6 is disabled.

0 = the second phototransistor is disabled.

BLV

4:3

Brightness level. This field indicates the brightness level at which the device is operating. The software may force the

backlight to operate at one of the three brightness levels. Setting CMP_AUTOEN high (Register 0x01) sets these

values automatically and overwrites any previously written values.

00 = Level 1 (daylight).

01 = Level 2 (office).

10 = Level 3 (dark).

11 = off (backlight set to 0 mA).

Law

2:1

Backlight transfer law.

00 = linear law DAC, linear time steps.

01 = square law DAC, linear time steps.

10 = square law DAC, nonlinear time steps (Cubic 10).

11 = square law DAC, nonlinear time steps (Cubic 11).

FOVR

Backlight fade override.

1 = the backlight fade override is enabled.

0 = the backlight fade override is disabled.

Backlight Sink Enable (BLSEN)—Register 0x05

Table 18. BLSEN Bit Map

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Reserved

D7EN

D6EN

D5EN

D4EN

D3EN

D2EN

D1EN

Table 19. Bit Descriptions for the BLSEN Register

Bit Name

Bit No.

Description

N/A

Reserved.

D7EN

Diode 7 backlight sink enable.

1 = selects LED7 as an independent sink.

0 = connects LED7 sink to backlight enable (BL_EN).

D6EN

Diode 6 backlight sink enable.

1 = selects LED6 as an independent sink.

0 = connects LED6 sink to backlight enable (BL_EN).

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