WM8994ECSSLASHR datasheet(121/363 Pages) CIRRUS

121 / 363 page

WM8994

Rev 4.6

121

VOLUME SETTING

VOLUME (dB)

000

001

-3

010

-6

011

-9

100

-12

101

-15

110

-18

111

-21

Table 59 MIXOUTL and MIXOUTR Volume Range

SPEAKER MIXER CONTROL

The Speaker Mixer path select and volume controls are described in Table 60 for the Left Channel

(SPKMIXL) and Table 61 for the Right Channel (SPKMIXR).

Care should be taken when enabling more than one path to a speaker mixer in order to avoid clipping.

The gain of each input path is adjustable using a selectable -3dB control in each path to facilitate this.

Each Speaker Mixer output is also controlled by an additional independent volume control.

Note that the DAC input levels may also be controlled by the DAC digital volume controls (see

“Digital

to Analogue Converter (DAC)

”) and the Audio Interface digital volume controls (see “Digital Volume

and Filter Control

”).

When using the IN1LP or IN1RP signal paths to the speaker mixers, the buffered VMID reference

must be enabled, using the VMID_BUF_ENA register, as described in “Reference Voltages and

Master Bias

”.

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