WM8718

Production Data

w

PD Rev 4.1 March 2004

17

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

0

0.001

0.002

0.003

0.004

0.005

0.006

Time(s)

Figure 10 Application and Release of Soft Mute

Setting the MUT register bit will apply a 'soft' mute to the input of the digital filters:

REGISTER ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

0010

Mode Control

0

MUT

0

Soft Mute select

0: Normal Operation

1: Soft mute both channels

DE-EMPHASIS MODE

Setting the DEEMPH register bit puts the digital filters into de-emphasis mode:

REGISTER ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

0010

Mode Control

1

DEEMPH

0

De-emphasis mode select:

0: De-emphasis Off

1: De-emphasis On

POWERDOWN MODE

mode. All trace of the previous input samples is removed, but all control register settings are

preserved. When PWDN is cleared again the first 16 input samples will be ignored, as the FIR

will repeat it's power-on initialisation sequence.

REGISTER ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

0010

Mode Control

2

PWDN

0

Power Down Mode Select:

0: Normal Mode

1: Power Down Mode