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WM8961GEFL/V Datasheet(PDF) 48 Page - Wolfson Microelectronics plc

Part # WM8961GEFL/V
Description  Ultra-Low Power Stereo CODEC with 1W Stereo Class D Speaker Drivers and Ground Referenced Headphone Drivers
PDF  116 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8961GEFL/V Datasheet(HTML) 48 Page - Wolfson Microelectronics plc

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WM8961
Pre-Production
w
PP, August 2009, Rev 3.1
48
SPEAKER OUTPUT PGA VOLUME CONTROL
The signal volume on SPK_L and SPK_R can be independently adjusted under software control by
writing to SPKLVOL and SPKRVOL, as shown in Figure 21.
Figure 21 Speaker Volume PGA
A zero cross detect on the analogue output may also be enabled when changing the gain setting to
minimize audible clicks and zipper noise as the gain updates. If zero cross is enabled a timeout is also
available to update the gain if a zero cross does not occur. This function may be enabled by setting
TOEN in register R23 (17h). The timeout period is set by CLK_TO_DIV[1:0]. The volume control
PGAs are enabled using SPKL_PGA and SPKR_PGA.



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