WM8944BECSSLASHR datasheet(73/165 Pages) CIRRUS

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WM8944B

Rev 4.3

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R5 (05h)

Companding

control

LOOPBACK

Audio Interface Loopback Function

0 = No loopback

1 = Audio Interface Loopback

enabled (DACDAT input is fed

through the DSP Core to the

ADCDAT output).

Table 48 Audio Interface Loopback Control

ADC TO DAC LOOPBACK

A loopback function is also provided to allow the ADC digital data output to be fed internally to the

DAC data input. This function is enabled by ADC_DAC_LOOPBACK and is illustrated in Figure 30.

DAC

ADC to DAC

Loopback Mode

SE1 (LPF/HPF,

5-notch, DF1)

SE2 (HPF,

Re-Tune, 5-band EQ)

SE3 (Dynamic

Range Control)

ADC

DIGITAL AUDIO

INTERFACE

Figure 30 ADC to DAC Loopback

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R5 (05h)

Companding

control

ADC_DAC_LOO

PBACK

ADC to DAC Loopback Function

0 = No loopback

1 = ADC to DAC Loopback enabled

(ADC data is fed directly into DAC

data input).

Table 49 ADC to DAC Loopback Control

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