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1
INTRODUCTION
1.1 Features
1.2 Applications
1.3 Description
TSC2117
Low-Power Audio Codec With Embedded miniDSP, Stereo Class-D
Speaker Amplifier, and Smart Four-Wire Touch-Screen Controller
www.ti.com
SLAS550A – APRIL 2009 – REVISED JUNE 2009
Low-Power 13-mW Stereo 48-kHz Playback
Portable Gaming Devices
Stereo Audio DAC and Monaural ADC Support
8-kHz to 192-kHz Sample Rates
Mobile Internet Devices
Instruction-Programmable miniDSP Available
Adaptive Filtering Applications
for Record and Playback Paths
Bass Boost/Treble/EQ With up to Five Biquads
for Record and up to Six Biquads for Playback
Stereo 1.29-W Class-D BTL 8- Speaker Driver
The TSC2117 is a low-power, highly integrated,
With Direct Battery Connection
high-performance codec and touch-screen controller
which features stereo class-D speaker amplifiers, a
Smart Four-Wire Touch-Screen Controller With
stereo audio DAC, mono audio ADC, and a SAR
Autonomous Timing
ADC.
Programmable-Gain Amplifiers
Microphone Bias
The TSC2117 supports 16-bit stereo playback and
monaural record functionality. The device integrates
Hardware-Implemented AGC Used With
several analog features, such as a microphone
Microphone Input for Audio ADC Path
interface, headphone drivers, and speaker drivers.
Digital Microphone Interface
The TSC2117 has two fully programmable miniDSPs
Digital Mixing Capability
for digital audio processing. The digital audio data
Pin Control or Register Control for
format is programmable to work with popular audio
Digital-Playback Volume-Control Settings
standard protocols (I2S, left/right-justified) in master,
Programmable 12-Bit SAR ADC
slave, DSP, and TDM modes. Bass boost, treble, or
EQ are supported by the preprogrammed modes of
Built-In Capability for Temperature, Battery, or
the programmable digital signal-processing block. An
Auxiliary Measurements
on-chip PLL provides the high-speed clock needed by
Programmable DRC for Digital Playback
the digital signal-processing block. The volume level
Sine-Wave Generator for Beep Generator for
can be controlled by either a pin control or by register
Touch-Pad Press Acknowledgement
control.
Integrated PLL Used for Programmable Digital
The TSC2117 has a 12-bit converter that supports a
Audio Processor
four-wire resistive touch-screen complete with drivers.
SPI, I2C, and I2S Serial Interfaces
All functions can be controlled by an I2C or SPI
SPI , I2C Have Register Auto-Increment
interface.
A
programmable
beep
generator
is
Full Power-Down Control
included. An on-chip processor is used in the
touch-screen mode and provides extensive features
Power Supplies:
specifically designed to reduce the host-processor
–
Analog: 2.7 V–3.6 V
and interface-bus overhead. The TSC2117 has three
–
Digital Core: 1.65 V–1.95 V
dedicated
analog
inputs
for
system
voltage
–
Digital I/O: 1.1 V–3.6 V
measurements, with an on-chip temperature sensor
–
Class-D: 2.7 V–5.5 V (SLVDD and SRVDD
≥
that can be read by the SAR ADC, and is available in
AVDD)
a 7-mm
× 7-mm 48-pin QFN package.
7-mm × 7-mm 48-QFN Package
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.
PurePath is a trademark of Texas Instruments.
MATLAB is a trademark of The MathWorks, Inc.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright 2009–2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.