Datasheet

ADP8861 Data Sheet
Rev. B | Page 26 of 40
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 Law FOVR
Table 17. Bit Descriptions for the CFGR Register
Bit Name Bit No. Description
N/A [7:3] Reserved
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 0 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 7 Reserved
D7EN 6 Diode 7 backlight sink enable
1 = selects LED7 as an independent sink
0 = connects LED7 sink to backlight enable (BL_EN)
D6EN 5 Diode 6 backlight sink enable
1 = selects LED6 as an independent sink
0 = connects LED6 sink to backlight enable (BL_EN)
D5EN 4 Diode 5 backlight sink enable
1 = selects LED5 as an independent sink
0 = connects LED5 sink to backlight enable (BL_EN)
D4EN 3 Diode 4 backlight sink enable
1 = selects LED4 as an independent sink
0 = connects LED4 sink to backlight enable (BL_EN)
D3EN 2 Diode 3 backlight sink enable
1 = selects LED3 as an independent sink
0 = connects LED3 sink to backlight enable (BL_EN)
D2EN 1 Diode 2 backlight sink enable
1 = selects LED2 as an independent sink
0 = connects LED2 sink to backlight enable (BL_EN)
D1EN 0 Diode 1 backlight sink enable
1 = selects LED1 as an independent sink
0 = connects LED1 sink to backlight enable (BL_EN)