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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LP5569RTWRG4 데이터시트(PDF) 43 Page - Texas Instruments |
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LP5569RTWRG4 데이터시트(HTML) 43 Page - Texas Instruments |
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43 / 93 page  43 LP5569 www.ti.com SNVSAP8A – JULY 2017 – REVISED SEPTEMBER 2017 Product Folder Links: LP5569 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Figure 31. LED1_CONTROL Register 7 6 5 4 3 2 1 0 mf_mapping1 led1_ratio_en exp_en1 external_power 1 RESERVED R/W-0h R/W-0h R/W-0h R/W-0h R/W-0h Table 20. LED1_CONTROL Register Field Descriptions Bit Field Type Reset Description 7–5 mf_mapping1 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 led1_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_en1 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_power1 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 8.6.1.6 LED2_CONTROL Register (Address = 9h) [reset = 0h] LED2_CONTROL is shown in Figure 32 and described in Table 21. Return to Summary Table. LED2 Control Register Figure 32. LED2_CONTROL Register 7 6 5 4 3 2 1 0 mf_mapping2 led2_ratio_en exp_en2 external_power 2 RESERVED R/W-0h R/W-0h R/W-0h R/W-0h R/W-0h Table 21. LED2_CONTROL Register Field Descriptions Bit Field Type Reset Description 7–5 mf_mapping2 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 led2_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. |
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