TI 公司的TSC2117是帶立體聲D類揚聲器放大器和嵌入了miniDSP的音頻編解碼器(CODEC),并具有智能四線觸摸屏控制器和立體聲音頻DAC,單聲道ADC和SAR ADC. TSC2117支持16位的立體聲播放和單聲道錄音,集成了多個模擬接口如麥克風接口,耳機驅(qū)動器和揚聲器驅(qū)動器,用于數(shù)字音頻處理的兩個可編程miniDSP. TSC2117工作電壓2.7V03.6V,能向D類BTL 8歐姆提供立體聲1.29W功率,可用在.手提游戲機,移動互聯(lián)網(wǎng)設備廠和自適應濾波器.本文介紹了TSC2117的主要特性,方框圖, 典型電路配置圖以及USB-MODEVM板的電路圖和材料清單(BOM).
TSC2117:Low-Power Audio Codec With Embedded miniDSP, Stereo Class-D Speaker Amplifier, and Smart Four-Wire Touch-Screen Controller
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 provided 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 sensore that can be read by the SAR ADC, and is availale in a 7-mm × 7-mm 48-pin QFN package.
TSC2117主要特性:
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-
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
TSC2117應用:
Portable Gaming Devices
Mobile Internet Devices
Adaptive Filtering Applications
圖1.TSC2117功能方框圖
圖2.TSC2117典型電路配置圖
TSC2117EVM-K評估模塊(EVM)和USB-MODEVM板
The TSC2117EVM-K evaluation module (EVM) features a TSC2117 touch screen controller with stereo audio codec, amplifiers for speakers and headphones and a digital signal processing module. Together with the USB-MODEVM board, the TSC2117 Control Software and a PC running Windows™ XP it is a plug-and-play solution to evaluate the capabilities of the TSC2117.
USB-MODEVM Schematic
圖3.USB-MODEVM電路圖(1)
圖4.USB-MODEVM電路圖(2)
圖5.USB-MODEVM電路圖(3)
USB-MODEVM材料清單:
