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WM8281ECS/R 데이터시트(PDF) 69 Page - Cirrus Logic

부품명 WM8281ECS/R
상세설명  Low Power Audio System with Ambient Noise Cancellation and Echo Cancellation
PDF  392 Pages
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제조업체  CIRRUS [Cirrus Logic]
홈페이지  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8281ECS/R 데이터시트(HTML) 69 Page - Cirrus Logic

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WM8281
Rev 4.0
69
The WM8281 performs automatic checks to confirm that the SYSCLK frequency is high enough to
support the output mixer paths. If an attempt is made to enable an output mixer path, and there are
insufficient SYSCLK cycles to support it, then the attempt will be unsuccessful. (Note that any signal
paths that are already active will not be affected under these circumstances.)
The Underclocked Error condition can be monitored using the GPIO and/or Interrupt functions. See
“General Purpose Input / Output” and “Interrupts” for further details.
The status bits in Registers R1600 to R3000 indicate the status of each of the digital mixers. If an
Underclocked Error condition occurs, then these bits provide readback of which mixer(s) have been
successfully enabled.
AIF2TXnMIX_VOL2
AIF2TXnMIX_VOL3
AIF2TXnMIX_VOL4
+
AIF2TXnMIX_VOL1
AIF2TXnMIX_SRC1
AIF2TXnMIX_SRC3
AIF2TXnMIX_SRC4
AIF2TXnMIX_SRC2
AIF2 TXn
AIF3TXnMIX_VOL2
AIF3TXnMIX_VOL3
AIF3TXnMIX_VOL4
+
AIF3TXnMIX_VOL1
AIF3TXnMIX_SRC1
AIF3TXnMIX_SRC3
AIF3TXnMIX_SRC4
AIF3TXnMIX_SRC2
AIF3 TXn
WM8281 supports 2 AIF3 Output mixers, ie. n = 1 or 2
AIF1TXnMIX_VOL2
AIF1TXnMIX_VOL3
AIF1TXnMIX_VOL4
+
AIF1TXnMIX_VOL1
AIF1TXnMIX_SRC1
AIF1TXnMIX_SRC3
AIF1TXnMIX_SRC4
AIF1TXnMIX_SRC2
AIF1 TXn
WM8280 supports 8 AIF1 Output mixers, ie. n = 1, 2, 3, 4, 5, 6, 7 or 8
WM8280 supports 6 AIF2 Output mixers, ie. n = 1, 2, 3, 4, 5 or 6
Figure 25 Digital Core AIF Outputs



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