TWR-AUDIO-SGTL Freescale Semiconductor, TWR-AUDIO-SGTL Datasheet - Page 19

• Manufacturer Part Number: TWR-AUDIO-SGTL
• Description: TWR SYS Audio Board
• Manufacturer: Freescale Semiconductor
• Series: Kinetisr

Specifications of TWR-AUDIO-SGTL

• Kit Contents: TWR-AUDIO-SGTL Featuring SGTL5000 Low Power Stereo Codec, Printed Quick Start Guide
• Mcu Supported Families: K20, K50, MCF51Jx
• Kit Features: SGTL5000 Low Power Stereo Codec With Headphone
• Rohs Compliant: Yes
• Design Resources: TWR-AUDIO-SGTL Schematics
• Accessory Type: Module, Audio with CODEC
• Description/function: Audio CODECs
• Mounting Style: Press Fit
• Product: Audio Modules
• Features: SGTL5000 Low Power Stereo Codec With Headphone Amplifier, Stereo Line-in / Line-out On 3.5mm Jack
• Lead Free Status / Rohs Status: Details
• For Use With/related Products: Freescale Tower System

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.
programming examples on how to enable/disable the DAP
block.
pass-through mode (Main channel will be passed through
without any mixing). When enabled, the volume of the main
and mix channels can be independently controlled before
they are mixed together.
of the incoming signal level. The default is 100% (same as
input signal level) volume on the main input and 0% (muted)
on the mix input.
Analog Integrated Circuit Device Data
Freescale Semiconductor
When the DAP block is added in the route, it must be
Refer to
The Dual Input Mixer can be enabled or configured in a
The volume range allowed on each channel is 0% to 200%
Source
Swtich
Select
From
Digital Audio Processor Configuration
Main Input
Mix Input
Set DAP_CONTROL->DAP_EN to enable DAP block
From Source Select Switch
From Source Select Switch
Each DAP sub-block can be configured in a pass -through mode
Mix Channel
Main Channel
Mixer
Input
Mixer
Dual
Input
Dual
Figure 12. Digital Audio Processing Block Diagram
Automatic
Automatic
Volume
Control
Volume
Control
(AVC)
DAP_MAIN_CHAN->VOL
(AVC)
Main Channel Volume
DAP_MIX_CHAN->VOL
Mix Channel Volume
Figure 13. DAP - Dual Input Mixer
for
Freescale
Surround
SigmaTel
Surround
its processing is not required. The sections below describes
the DAP sub-blocks and how to configure them.
Dual Input Mixer
streams from the source select switch as shown in
Dual Input
how to enable/disable the mixer and also to set the main and
mix channel volume.
Freescale Surround
algorithm for stereo or mono inputs. It widens and deepens
sound stage for music input.
Each sub-block of the DAP can be individually disabled if
The dual input digital mixer allows for two incoming
Refer to
Freescale Surround is a royalty free virtual surround
Freescale
SigmaTel
Enhance
Enhance
Bass
Bass
Mixer.
Dual Input Mixer
Sum
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
To SGTL Surround Block
Only one of PEQ/GEQ/TC
can be used at a time
Mixer Output
Parametric
Graphic
FUNCTIONAL DEVICE OPERATION
7-Band
5-Band
Control
Tone
for programming examples on
EQ
EQ
Source
Swtich
Select
To
DAP -
SGTL5000
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