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WM8281ECS/R Datasheet(PDF) 387 Page - Cirrus Logic

No. de pieza WM8281ECS/R
Descripción Electrónicos  Low Power Audio System with Ambient Noise Cancellation and Echo Cancellation
PDF  392 Pages
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Fabricante Electrónico  CIRRUS [Cirrus Logic]
Página de inicio  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8281ECS/R Datasheet(HTML) 387 Page - Cirrus Logic

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WM8281
Rev 4.0
387
In each case, the SYSCLK (ASYNCCLK) frequency must be a valid ratio to the LRCLK frequency; the
supported
clocking
rates
are
defined
by
the
SYSCLK_FREQ
(ASYNC_CLK_FREQ)
and
SAMPLE_RATE_n (ASYNC_SAMPLE_RATE_n) registers.
The valid AIF clocking configurations are illustrated in Figure 95 to Figure 101 below. Note that, where
MCLK1 is illustrated as the clock source, it is equally possible to select MCLK2 as the clock source.
Similarly, in cases where FLL1 is illustrated, it is equally possible to select FLL2.
AIFn
(Master Mode)
Oscillator
WM8281
Processor
AIFnBCLK
AIFnLRCLK
AIFnRXDAT
AIFnTXDAT
SYSCLK
(or ASYNCCLK)
SYSCLK_SRC
(or ASYNCCLK_SRC)
Figure 95 AIF Master Mode, using MCLK as Reference
Oscillator
WM8281
AIFn
(Master Mode)
Processor
AIFnBCLK
AIFnLRCLK
AIFnRXDAT
AIFnTXDAT
FLL1_REFCLK_SRC
FLL1
SYSCLK
(or ASYNCCLK)
SYSCLK_SRC
(or ASYNCCLK_SRC)
Figure 96 AIF Master Mode, using MCLK and FLL as Reference



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