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SC5014 датащи(PDF) 30 Page - Semtech Corporation

номер детали SC5014
подробное описание детали  High Efficiency 4-Channel HB LED Driver with I2C Interface and Phase-Shifted PWM Dimming
PDF  34 Pages
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производитель  SEMTECH [Semtech Corporation]
домашняя страница  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC5014 датащи(HTML) 30 Page - Semtech Corporation

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SC5014
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Definition of Registers and Bits (continued)
Dimming Duty Cycle Control Register
Bit Field
Definition
Read / Write Description
0x03 [:0]
0x04 [7:0]
D [9:0]
R / W
0-bit PWM brightness setting — This value is spread over registers: 0x03 (MSB) and 0x04
(LSB).
Dimming Frequency Select Register
Bit Field
Definition
Read / Write Description
0x05 [7:0]
FREQ [7:0]
R / W
This register sets the LED dimming frequency.
FAST_FREQ = , then LED dimming frequency is equal to 0MHz / (52 x (FREQ+)).
FAST_FREQ = 0, then LED dimming frequency is equal to 0MHz / (024 x (FREQ+)).
PLL Control Registers
Bit Field
Definition
Read / Write Description
0x06 [:0]
0x07 [7:0]
0x08 [7:0]
NPLL [7:0]
R / W
These registers set the PLL divider value — The system clock is intended to run at 0MHz; this
value divides the system clock down to a frequency comparable to the SYNC signal’s frequen-
cy to allow PLL synchronization. Typical values are shown below.
F
IN
PLL Divider N
Register Values
FPLL = (N+2) × F
IN
60 Hz
69,982
0x02 - 0x97 - 0xFE
0MHz
 MHz
8
0x00 - 0x00 - 0x08
0MHz
Fade Options Registers
Bit Field
Definition
Read / Write Description
0x09 [7]
FADE_EN
R/W
Enables the fading feature.
FADE_EN = 0: No Fading; Jumps directly to new PWM value.
FADE_EN = : Enables fading.
0x09 [6]
FADE_TYPE
R/W
Selects the fading type.
FADE_TYPE = 0: Logarithmic Fading.
FADE_TYPE = : Linear Fading.



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