TI TSC2117带D类放大器的音频编解码方案

TI 公司的TSC2117是带立体声D类扬声器放大器和嵌入了miniDSP的音频编解码器(CODEC),并具有智能四线触摸屏控制器和立体声音频DAC,单声道ADC和SAR ADC. TSC2117支持16位的立体声播放和单声道录音,集成了多个模拟接口如麦克风接口,耳机驱动器和扬声器驱动器,用于数字音频处理的两个可编程miniDSP. TSC2117工作电压2.7V03.6V,能向D类BTL 8欧姆提供立体声1.29W功率,可用在.手提游戏机,移动互联网设备厂和自适应滤波器.本文介绍了TSC2117的主要特性,方框图, 典型电路配置图以及USB-MODEVM板的电路图和材料清单(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...