Datasheet

ADP8860
Rev. 0 | Page 46 of 52
Bit Name Bit No. Description
L2_EN2 0 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).