CS42L50 Datasheet, PDF (30/48 Pages) Cirrus Logic – Low Voltage, Stereo CODEC with headphone Amp

CS42L50
11 - Line Mute
Function:
The Line Amplifier Gain Compensation bits allow the user to scale the full-scale line output level according
to the power supply voltage used. The full-scale line output level will be equal to {gain factor}xVA, where
{gain factor} is selected from options above.
The Line Mute option is available to allow muting of the line output when the headphone output is still in
use and the line amp is still powered up. To use this feature, first mute the outputs via the ATAPI bits.
Next, set the LINE GAIN to Line Mute. Finally, un-mute the outputs with the ATAPI bits. Following these
steps will ensure a click free mute.
4.2.28 DIGITAL INTERFACE FORMAT (DIF)
Default = 000 - Format 0 (I²S, up to 24-bit data)
Function:
The required relationship between the Left/Right clock, serial clock and serial data is defined by the Digital
Interface Format and the options are detailed in Figures 25-30. It is recommended that the ADC and the
DAC is configured for the same Digital Interface Format.
DIF2
0
0
0
0
1
1
1
1
DIF1
0
0
1
1
0
0
1
1
DIF0
0
1
0
1
0
1
0
1
DESCRIPTION
I²S, up to 24-bit data
Reserved
Left Justified, up to 24-bit data,
Right Justified, 24-bit data
Right Justified, 20-bit data
Right Justified, 16-bit data
Right Justified, 18-bit data
Identical to Format 0
Table 6. Digital Interface Format
Format
0
-
2
3
4
5
6
0
FIGURE
30
-
25
27
29
26
28
30
30
DS544PP1