TLV320AIC3254
Ultra Low Power Stereo Audio Codec With Embedded miniDSP
www.ti.com
SLAS549A–SEPTEMBER 2008–REVISED OCTOBER 2008
1 Introduction
1.1 Features
1.2 Applications
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Stereo Audio DAC with 100dB SNR
4.1mW Stereo 48ksps DAC Playback
Stereo Audio ADC with 93dB SNR
6.1mW Stereo 48ksps ADC Record
PowerTune™
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Portable Navigation Devices (PND)
Portable Media Player (PMP)
Mobile Handsets
Communication
Portable Computing
Extensive Signal Processing Options
Embedded miniDSP
Acoustic Echo Cancellation (AEC)
Active Noise Cancellation (ANC)
Advanced DSP algorithms
Six Single-Ended or 3 Fully-Differential Analog
Inputs
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Stereo Analog and Digital Microphone Inputs
Stereo Headphone Outputs
Stereo Line Outputs
1.3 Description
The TLV320AIC3254 (sometimes referred to as the
AIC3254) is a flexible, low-power, low-voltage stereo
audio codec with programmable inputs and outputs,
PowerTune capabilities, fully programmable miniDSP,
fixed predefined and parameterizable signal
processing blocks, integrated PLL, integrated LDOs
and flexible digital interfaces.
Very Low-Noise PGA
Low Power Analog Bypass Mode
Programmable Microphone Bias
Programmable PLL
Integrated LDO
5 mm x 5 mm 32-pin QFN Package
IN1_L
-72...0dB
Vol. Ctrl
IN2_L
AGC
DRC
-6...+29dB
0…+47.5 dB
IN3_L
+
+
ADC
Signal
Proc.
DAC
Signal
Proc.
+
+
+
+
HPL
LOL
LOR
HPR
Left
ADC
Left
DAC
tpl
´
´
1dB steps
-6...+29dB
Gain Adj.
0.5 dB
steps
-30...0 dB
1dB steps
-6...+29dB
Data
Interface
miniDSP
miniDSP
-30...0 dB
1dB steps
-6...+29dB
0…
+47.5 dB
Gain Adj.
+
+
ADC
Signal
Proc.
DAC
Signal
Proc.
Right
ADC
Right
DAC
tpr
´
´
IN3_R
IN2_R
IN1_R
0.5 dB steps
AGC
DRC
Vol. Ctrl
1dB steps
-72...0dB
SPI_Select
Reset
SPI / I2C
Control Block
Digital Interrupt Secondary
Mic. Ctrl
I2S IF
Primary
I2S Interface
PLL
HPVdd
MicBias
Ref
Mic
Bias
ALDO
Supplies
Pin Muxing/ Clock Routing
Ref
DLDO
Figure 1-1. Simplified Block Diagram
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this document.
PowerTune is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008–2008, Texas Instruments Incorporated