ADP8860ACPZ-R7 datasheet(46/52 Pages) AD

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ADP8860

Rev. 0 | Page 46 of 52

Bit Name

Bit No.

Description

L2_EN2

Note that the L3 comparator has priority over L2.

1 = the L2 comparator is enabled for the CMP_IN2 comparator.

0 = the L2 comparator is disabled for the CMP_IN2 comparator.

Comparator Level 2 Threshold (L2_TRP)—Register 0x1D

Table 68. L2_TRP Bit Map

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

L2_TRP

Table 69. Bit Descriptions for the L2_TRP Register

Bit Name

Bit No.

Description

L2_TRP

7:0

Comparator Level 2 threshold. If the comparator input is below L2_TRP, then the comparator trips and

the backlight enters Level 2 (office) mode. The following lists the code settings for photosensor current:

00000000 = 0 μA.

00000001 = 4.3 μA.

00000010 = 8.6 μA.

00000011 = 12.9 μA.

…

11111010 = 1080 μA.

…

11111111 = 1106 μA.

Although codes above 1111010 (250) are possible, they should not be used. Furthermore, the maximum

value of L2_TRP + L2_HYS must not exceed 1111010 (250).

Comparator Level 2 Hysteresis (L2_HYS)—Register 0x1E

Table 70. L2_HYS Bit Map

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

L2_HYS

Table 71. Bit Descriptions for the L2_HYS Register

Bit Name

Bit No.

Description

L2_HYS

7:0

Comparator Level 2 hysteresis. If the comparator input is above L2_TRP + L2_HYS, the comparator trips

and the backlight enters Level 1 (daylight) mode. The following lists the code settings for photosensor

current hysteresis:

0000000 = 0 μA.

00000001 = 4.3 μA.

00000010 = 8.6 μA.

00000011 = 12.9 μA.

…

11111010 = 1080 μA.

…

11111111 = 1106 μA.

Although codes above 1111010 (250) are possible, they should not be used. Furthermore, the maximum

value of L2_TRP + L2_HYS must not exceed 1111010 (250).

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