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LP5569 数据表(PDF) 42 Page - Texas Instruments |
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LP5569 数据表(HTML) 42 Page - Texas Instruments |
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42 / 93 page  42 LP5569 SNVSAP8A – JULY 2017 – REVISED SEPTEMBER 2017 www.ti.com Product Folder Links: LP5569 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Table 18. LED_ENGINE_CONTROL2 Register Field Descriptions (continued) Bit Field Type Reset Description 5–4 ch2_mode R/W 0h Engine 2 operation mode 00 = Disabled (default) 01 = Load program to SRAM 10 = Run program 11 = Halt 3–2 ch3_mode R/W 0h Engine 3 operation mode 00 = Disabled (default) 01 = Load program to SRAM 10 = Run program 11 = Halt 1–0 RESERVED R/W 0h 8.6.1.4 LED0_CONTROL Register (Address = 7h) [reset = 0h] LED0_CONTROL is shown in Figure 30 and described in Table 19. Return to Summary Table. LED0 Control Register Figure 30. LED0_CONTROL Register 7 6 5 4 3 2 1 0 mf_mapping0 led0_ratio_en exp_en0 external_power 0 RESERVED R/W-0h R/W-0h R/W-0h R/W-0h R/W-0h Table 19. LED0_CONTROL Register Field Descriptions Bit Field Type Reset Description 7–5 mf_mapping0 R/W 0h Master fader mapping select: 0h = No master fading (default) 1h = Master fader1 2h = Master fader2 3h = Master fader3 4h = No master fading 5h = PWM input master fading 6h = No master fading 7h = No master fading 4 led0_ratio_en R/W 0h 0 = Disables ratiometric dimming (default) 1 = Enables ratiometric dimming When ratiometric dimming is enabled, the emitted color of an RGB- LED remains the same regardless of the initial magnitude of the LED output. 3 exp_en0 R/W 0h 0 = Linear adjustment (default) 1 = Exponential adjustment This bit is effective for both the program execution engine control and direct PWM control. 2 external_power0 R/W 0h 0 = LED is powered by charge pump (default) 1 = LED is powered by external power source 1–0 RESERVED R/W 0h 8.6.1.5 LED1_CONTROL Register (Address = 8h) [reset = 0h] LED1_CONTROL is shown in Figure 31 and described in Table 20. Return to Summary Table. LED1 Control Register |
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