CDB42L73 Datasheet, PDF (13/36 Pages) Cirrus Logic – Ecaluation Borard for the CS42L73

CDB42L73
To restore one of several standard configurations pre-defined at the factory, load the register settings
starting with “Factory_Default” in its file name. The file names are meant to be self-explanatory. For ex-
ample, if “Factory_Default_LINEIN_to_ASPOUT_ASPIN_to HP_LINEOUT.fgs” is loaded, the Line Input
is routed to the Audio Serial Port to the S/PDIF output, and the S/PDIF input is routed to the Audio Serial
Port to the Headphone and Line Output.
4.3 Using the FlexGUI High-level Interface Layout
The CS42L73 is a versatile CODEC with many features and register settings. To keep the GUI easy to use
and visually clean, register controls for the CS42L73 are grouped by function and their location in the signal
chain. The result is a series of tabs arranged to mirror the CS42L73’s major functional blocks as closely as
possible (the S/PDIF tab is an exception in that it is not part of the CS42L73 but its functionality in the system
is important enough to warrant a tab in the GUI).
Figure 4 below shows the tabs in the FlexGUI high-level interface layout.
Figure 4. FlexGUI Tabs
Figure 5 below is a flow diagram to help users map the FlexGUI tabs to their respective function in the audio
signal chain.
Analog Signal
(Mic In, Line In)
Anlg Input
A/D
Input DSP
Digital
Dig Mixer 1
&
Digital
Dig Mixer 2
Output
DSP
D/A _{Anlg Output}
Analog Signal
(HP Out, Line Out,
Spk Out, Spkline Out,
Ear Out)
S/PDIF
Input and
Output
Clocking XSP VSP ASP
S/PDIF
Audio Serial Port
(ASP)
Aux Serial Port
(ASP)
Video Serial Port
(ASP)
Figure 5. Correlating the FlexGUI Tabs to the Audio Signal Chain
Legend:
Represents a tab/page
in the GUI
Shows the direction
of the audio signal
The subsequent sections, Section 4.3.1 through Section 4.3.9, describe each tab in detail.
DS882DB1
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