WM8976GEFL/V Wolfson Microelectronics, WM8976GEFL/V Datasheet - Page 24

• Manufacturer Part Number: WM8976GEFL/V
• Description: Audio CODECs Mono ADC Stereo DAC with Spkr
• Manufacturer: Wolfson Microelectronics

Specifications of WM8976GEFL/V

• Mounting Style: SMD/SMT
• Package / Case: QFN-32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8976
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VOLUME UPDATES
Figure 11 Simultaneous Left and Right Volume Updates
Figure 12 Click Noise During Volume Update
Volume settings will not be applied to the PGAs until a '1' is written to one of the INPPGAUPDATE
bits. This is to allow left and right channels to be updated at the same time, as shown in Figure 11.
If the volume is adjusted while the signal is a non-zero value, an audible click can occur as shown in
Figure 12.
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 13.
PD Rev 4.4 July 2009
Production Data
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