WM9093ECSSLASHR datasheet(23/84 Pages) WOLFSON

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Production Data

WM9093

PD, March 2012, Rev 4.2

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R54 (36h)

Speaker Mixer

IN1A_TO_SPKMIX

IN1A to SPKMIX enable

0 = Disabled

1 = Enabled

IN1B_TO_SPKMIX

IN1B to SPKMIX enable

0 = Disabled

1 = Enabled

IN2A_TO_SPKMIX

IN2A to SPKMIX enable

0 = Disabled

1 = Enabled

IN2B_TO_SPKMIX

IN2B to SPKMIX enable

0 = Disabled

1 = Enabled

R34 (22h)

SPKMIXL

Attenuation

SPKMIX_MUTE

SPKMIX Output mute

0 = Un-Mute

1 = Mute

7:6

IN1A_SPKMIX_VOL

IN1A to SPKMIX volume control

00 = 0dB

01 = -6dB

10 = -9dB

11 = -12dB

5:4

IN1B_SPKMIX_VOL

IN1B to SPKMIX volume control

00 = 0dB

01 = -6dB

10 = -9dB

11 = -12dB

3:2

IN2A_SPKMIX_VOL

IN2A to SPKMIX volume control

00 = 0dB

01 = -6dB

10 = -9dB

11 = -12dB

1:0

IN2B_SPKMIX_VOL

[1:0]

IN2B to SPKMIX volume control

00 = 0dB

01 = -6dB

10 = -9dB

11 = -12dB

Table 5 Speaker Mixer (SPKMIX) Control

SPEAKER OUTPUT VOLUME CONTROL

The speaker output PGA controls are shown in Table 6.

Note that the Speaker Output PGA is bypassed when the ‘Voice Bypass’ path is selected as the

speaker output source, as described in the following section (“Speaker Boost Mixer Control”). In this

case, the SPKMIX mixer and the Speaker Output PGA can be disabled, providing a low-power signal

path for ‘Voice Bypass’ applications.

A zero-cross function is provided on the speaker output PGA. Note that the timeout clock TOCLK

must be enabled when using the zero-cross function. See “Clocking Control” for more information on

the TOCLK control fields.

The SPKOUT_VU bit controls the loading of the speaker PGA volume data. This bit should be set to

1 whenever the SPKOUTL_VOL register is updated.

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