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WM8986GECO/V Datasheet(PDF) 27 Page - Wolfson Microelectronics plc

Part # WM8986GECO/V
Description  Multimedia DAC With Class D Headphone and Line Out
PDF  87 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8986GECO/V Datasheet(HTML) 27 Page - Wolfson Microelectronics plc

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Pre-Production
WM8986
w
PP, Rev 3.1, February 2007
27
VOLUME UPDATES
Volume settings will not be applied to the PGAs until a '1' is written to one of the INPPGAVU bits.
This is to allow left and right channels to be updated at the same time, as shown in Figure 14.
Figure 14 Simultaneous Left and Right Volume Updates
If the volume is adjusted while the signal is a non-zero value, an audible click can occur as shown in
Figure 15.
Figure 15 Click Noise During Volume Update
In order to prevent this click noise, a zero cross function is provided. When enabled, this will cause
the PGA volume to update only when a zero crossing occurs, minimising click noise as shown in
Figure 16.



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