SGTL5000XNAA3R2 Freescale, SGTL5000XNAA3R2 Datasheet - Page 20

• Manufacturer Part Number: SGTL5000XNAA3R2
• Manufacturer: Freescale

Specifications of SGTL5000XNAA3R2

• Single Supply Voltage (typ): 1.8/2.5/3.3V
• Lead Free Status / RoHS Status: Compliant

through mode (input will be passed through without any
processing). When enabling the Surround, mono or stereo
input type must be selected based on the input signal.
Surround width may be adjusted for the size of the sound
stage.
Off
width and how to enable/disable Surround.
pass-through mode (input will be passed through without any
processing).
selected based on the speakers frequency response. The
cutoff frequency of the low-pass and high-pass filters are
selectable between 80 to 225 Hz. Also, the input signal and
bass enhanced signal can be individually adjusted for level
before the two signals are mixed.
Off
Enhance and how to enable/disable this feature.
7-Band Parametric EQ / 5-Band Graphic EQ / Tone
Control
graphic equalizer (GEQ) and a Tone Control (Bass and
20
SGTL500
FUNCTIONAL DEVICE OPERATION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
The SGTL Surround can be enabled or configured in pass-
Refer to
The SGTL Bass Enhance can be enabled or configured in
The cutoff frequency of the low-pass filter (LPF) can be
Refer to
One 7-band parametric equalizer (PEQ) and one 5-band
for a programming example on how to configure Surround
for a programming example on how to configure Bass
(From SGTL Surround)
Freescale Surround
Freescale Bass Enhance
Input
DAP_BASS_ENHANCE
From Dual Mixer
->CUT_OFF
Low Pass
Input
Filter
and
Freescale Surround On/
and
Enhance
Bass Enhance On/
Figure 14. DAP- Freescale Bass Enhance
Bass
DAP_SGTL_SURROUND
-> WIDTH_CONTROL
DAP_BASS_ENHANCE_CTRL
DAP_BASS_ENHANCE_CTRL
->SELECT
SigmaTel
Surround
Freescale
Surround
->BASS_LEVEL
->LR_LEVEL
Freescale Bass Enhance
enhances natural bass response of the audio. Bass Enhance
extracts bass content from right and left channels, adds bass
and mixes this back up with the original signal. An optional
complementary high pass filter is provided after the mixer.
Treble control) blocks are implemented as mutually exclusive
blocks. Only one block can be used at a given time.
Tone Control
select the desired EQ mode.
7-Band Parametric EQ
speaker response and to provide the ability to filter out
resonant frequencies caused by the physical system design.
The system designer can create custom EQ presets such
Rock, Speech, Classical, etc, that allows the users the
flexibility in customizing their audio.
second order IIR filters. All filters are implemented using
programmable bi-quad filters.
function and Direct Form 1 of the five coefficient biquadratic
filter.
Freescale Bass Enhance is a royalty-free algorithm that
Refer to
The 7-band PEQ allows the designer to compensate for
The 7-band PEQ is implemented using 7 cascaded
7-Band Parametric EQ / 5-Band Graphic EQ /
DAP_BASS_ENHANCE_CTRL
for a programming example that shows how to
->CUTOFF_HPF
->BYPASS_HPF
To SGTL Bass Enhance
High Pass
Analog Integrated Circuit Device Data
Filter
Figure 15
Output
Freescale Semiconductor
(To PEQ/GEQ/TC)
shows the transfer
Output