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ADP8860ACBZ-R7 数据表(PDF) 16 Page - Analog Devices |
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ADP8860ACBZ-R7 数据表(HTML) 16 Page - Analog Devices |
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16 / 52 page  ADP8860 Rev. 0 | Page 16 of 52 BACKLIGHT OPERATING LEVELS Backlight brightness control operates in three distinct levels: daylight (L1), office (L2), and dark (L3). The BLV bits in Register 0x04 control the specific level in which the backlight operates. These bits can be changed manually, or if in automatic mode (CMP_AUTOEN is set high in Register 0x01), by the ambient light sensor (see the Ambient Light Sensing section). By default, the backlight operates at daylight level (BLV = 00), where the maximum brightness is set using Register 0x09 (BLMX1). A daylight dim setting can also be set using Register 0x0A (BLDM1). When operating at office level (BLV = 01), the backlight maximum and dim brightness settings are set by Register 0x0B (BLMX2) and Register 0x0C (BLDM2). When operating at the dark level (BLV = 10), the backlight maximum and dim brightness settings are set by Register 0x0D (BLMX3) and Register 0x0E (BLDM3). DAYLIGHT (L1) OFFICE (L2) DARK (L3) DAYLIGHT_MAX OFFICE_MAX BACKLIGHT OPERATING LEVELS DAYLIGHT_DIM DARK_MAX DARK_DIM OFFICE_DIM 0 30mA Figure 29. Backlight Operating Levels |
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