SGTL5000XNAA3 Datasheet, PDF (36/84 Pages) Freescale Semiconductor, Inc – Low Power Stereo Codec with Headphone Amp

SGTL5000
DATASHEET
The block diagram in Figure 14 shows the sequence in which the signal passes
through these blocks.
Set DAP_CONTROL->DAP_EN to enable DAP block
From
Source
Select
Swtich
Main Input
Mix Input
Dual
Input
Mixer
Automatic
Volume
Control
(AVC)
SigmaTel
Surround
SigmaTel
Bass
Enhance
Each DAP sub-block can be configured in a pass-through mode
7-Band
Parametric
EQ
5-Band
Graphic
EQ
Tone
Control
To
Source
Select
Swtich
Only one of PEQ/GEQ/TC
can be used at a time
Figure 14. Digital Audio Processing Block Diagram
When the DAP block is added in the route, it must be enabled separately to get
audio through. It is recommended to mute the outputs before enabling/disabling the
DAP block to avoid any pops or clicks due to discontinuities in the output.
Refer to section 6.2.4 for programming examples on how to enable/disable the DAP
block.
Each sub-block of the DAP can be individually disabled if its processing is not
required. The sections below describes the DAP sub-blocks and how to configure
them.
5.9.1.
Dual Input Mixer
The dual input digital mixer allows for two incoming streams from the source select
switch as shown in Figure 15.
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SGTL5000 EA2 DS-0-3