TSC2117 Datasheet, PDF (1/192 Pages) Texas Instruments – Low-Power Audio Codec With Embedded miniDSP, Stereo Class-D Speaker Amplifier, and Smart Four-Wire Touch-Screen Controller

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1 INTRODUCTION
TSC2117
Low-Power Audio Codec With Embedded miniDSP, Stereo Class-D
Speaker Amplifier, and Smart Four-Wire Touch-Screen Controller
SLAS550A – APRIL 2009 – REVISED JUNE 2009
1.1 Features
• Low-Power 13-mW Stereo 48-kHz Playback
• Stereo Audio DAC and Monaural ADC Support
8-kHz to 192-kHz Sample Rates
• Instruction-Programmable miniDSP Available
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-Ω Speaker Driver
With Direct Battery Connection
• Smart Four-Wire Touch-Screen Controller With
Autonomous Timing
• Programmable-Gain Amplifiers
• Microphone Bias
• Hardware-Implemented AGC Used With
Microphone Input for Audio ADC Path
• Digital Microphone Interface
• Digital Mixing Capability
• Pin Control or Register Control for
Digital-Playback Volume-Control Settings
• Programmable 12-Bit SAR ADC
• Built-In Capability for Temperature, Battery, or
Auxiliary Measurements
• Programmable DRC for Digital Playback
• Sine-Wave Generator for Beep Generator for
Touch-Pad Press Acknowledgement
• Integrated PLL Used for Programmable Digital
Audio Processor
• SPI, I²C, and I²S Serial Interfaces
• SPI , I²C Have Register Auto-Increment
• Full Power-Down Control
• Power Supplies:
– Analog: 2.7 V–3.6 V
– Digital Core: 1.65 V–1.95 V
– Digital I/O: 1.1 V–3.6 V
– Class-D: 2.7 V–5.5 V (SLVDD and SRVDD ≥
AVDD)
• 7-mm × 7-mm 48-QFN Package
1.2 Applications
• Portable Gaming Devices
• Mobile Internet Devices
• Adaptive Filtering Applications
1.3 Description
The TSC2117 is a low-power, highly integrated,
high-performance codec and touch-screen controller
which features stereo class-D speaker amplifiers, a
stereo audio DAC, mono audio ADC, and a SAR
ADC.
The TSC2117 supports 16-bit stereo playback and
monaural record functionality. The device integrates
several analog features, such as a microphone
interface, headphone drivers, and speaker drivers.
The TSC2117 has two fully programmable miniDSPs
for digital audio processing. The digital audio data
format is programmable to work with popular audio
standard protocols (I²S, left/right-justified) in master,
slave, DSP, and TDM modes. Bass boost, treble, or
EQ are supported by the preprogrammed modes of
the programmable digital signal-processing block. An
on-chip PLL provides the high-speed clock needed by
the digital signal-processing block. The volume level
can be controlled by either a pin control or by register
control.
The TSC2117 has a 12-bit converter that supports a
four-wire resistive touch-screen complete with drivers.
All functions can be controlled by an I²C or SPI
interface. A programmable beep generator is
included. An on-chip processor is used in the
touch-screen mode and provides extensive features
specifically designed to reduce the host-processor
and interface-bus overhead. The TSC2117 has three
dedicated analog inputs for system voltage
measurements, with an on-chip temperature sensor
that can be read by the SAR ADC, and is available in
a 7-mm × 7-mm 48-pin 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.
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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 © 2009–2009, Texas Instruments Incorporated