WM8956 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

WM8956

Hi-Fi DAC with 1W Stereo Class D Speaker Drivers and Headphone Drivers

Cirrus Logic 

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WM8956

Production Data

Figure 18 Volume Update using Zero Cross Detection

If there is a long period where no zero-crossing occurs, a timeout circuit in the WM8956 will

automatically update the volume. The volume updates will occur between one and two timeout

periods, depending on when the volume update bit is set as shown in Figure 19. The TOEN register

bit must be set to enable this timeout function. The timeout period is set by TOCLKSEL.

Figure 19 Volume Update after Timeout

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PD, November 2011, Rev 4.1

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