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WM8998 Datasheet(PDF) 52 Page - Wolfson Microelectronics plc

Part # WM8998
Description  High Performance Audio Hub CODEC
PDF  307 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8998 Datasheet(HTML) 52 Page - Wolfson Microelectronics plc

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WM8998
Production Data
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PD, October 2014, Rev 4.0
52
DIGITAL MICROPHONE INTERFACE PULL-DOWN
The WM8998 provides integrated pull-down resistors on the DMICDAT1 and DMICDAT2 pins. This
provides a flexible capability for interfacing with other devices.
Each of the pull-down resistors can be configured independently using the register bits described in
Table 6. Note that, if the DMICDAT1 or DMICDAT2 digital microphone input paths are disabled, then
the pull-down will be disabled on the respective pin.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R3106
(0C22h)
Misc Pad
Ctrl 3
1
DMICDAT2_PD
0
DMICDAT2 Pull-Down Control
0 = Disabled
1 = Enabled
0
DMICDAT1_PD
0
DMICDAT1 Pull-Down Control
0 = Disabled
1 = Enabled
Table 6 Digital Microphone Interface Pull-Down Control



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