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WM8281ECS/R Folha de dados(PDF) 318 Page - Cirrus Logic

Nome de Peças WM8281ECS/R
Descrição Electrónicos  Low Power Audio System with Ambient Noise Cancellation and Echo Cancellation
PDF  392 Pages
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Fabricante Electrônico  CIRRUS [Cirrus Logic]
Página de início  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

WM8281ECS/R Folha de dados(HTML) 318 Page - Cirrus Logic

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WM8281
318
Rev 4.0
The BOOT_DONE_STS signal is an input to the Interrupt control circuit and can be used to trigger an
Interrupt event - s
ee “Interrupts”.
The BOOT_DONE_STS signal can also generate a GPIO output, providing an external indication of
the Boot Sequence. See “General Purpose Input / Output” to configure a GPIO pin for this function.
For details of the Boot Sequence
, see “Control Write Sequencer”.
The status of the WM8281 digital I/O pins following Hardware Reset, Software Reset or Wake-Up is
described in
the “Power-On Reset (POR)” section.
The Device ID can be read back from Register R0. The Hardware Revision can be read back from
Register R1.
The Software Revision can be read back from Register R2. The Software Revision code is
incremented if software driver compatibility or software feature support is changed.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R0 (0000h)
Software
Reset
15:0
SW_RST_DEV_
ID [15:0]
5110h
Writing to this register resets all registers
to their default state.
Reading from this register will indicate
Device ID 5110h.
R1 (0001h)
Hardware
Revision
7:0
HW_REVISION
[7:0]
Hardware Device revision.
(incremented for every new revision of
the device)
R2 (0002h)
Software
Revision
6:0
SW_REVISION
[6:0]
Software Device revision.
(incremented if software driver
compatibility or software feature support
is changed)
Table 131 Device Reset and ID



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