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WM8994ECS/R 데이터시트(PDF) 89 Page - Cirrus Logic

부품명 WM8994ECS/R
상세설명  Multi-channel Audio Hub CODEC for Smartphones
PDF  363 Pages
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제조업체  CIRRUS [Cirrus Logic]
홈페이지  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8994ECS/R 데이터시트(HTML) 89 Page - Cirrus Logic

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WM8994
Rev 4.6
89
RETUNE MOBILE MODE
ReTune Mobile mode provides a comprehensive facility for the user to define the cut-off/centre
frequencies and filter bandwidth for each EQ band, in addition to the gain controls already described.
This enables the EQ to be accurately customised for a specific transducer characteristic or desired
sound profile.
The EQ enable and EQ gain controls are the same as defined for the default mode. The additional
coefficients used in ReTune Mobile mode are held in registers R1154 to R1171 for AIF1DAC1,
registers R1186 to R1203 for AIF1DAC2 and registers R1410 to R1427 for AIF2. These coefficients
are derived using tools provided in WISCE
™ evaluation board control software.
Please contact your local Cirrus Logic representative for more details.
Note that the WM8994 audio interfaces may operate at different sample rates concurrently. The EQ
settings for each interface must be programmed relative to the applicable sample rate of the
corresponding audio interface. If the audio interface sample rate is changed, then different EQ register
settings will be required to achieve a given EQ response.



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