Overview
The TLV320AIC3254EVM-U is a comprehensive evaluation module (EVM) designed for the TLV320AIC3254, a flexible and low-power stereo audio codec from Texas Instruments. This EVM is tailored for evaluating and developing various audio applications, particularly suited for portable audio devices such as smartphones, tablets, and digital audio players.
The module features a small USB stick form factor, making it easy to connect to a personal computer via USB, which provides power, control, and streaming audio. It comes pre-programmed with an EEPROM that boots the TLV320AIC3254 as a fully functional USB audio device when connected to a PC.
Key Specifications
| Specification | Description |
|---|---|
| Form Factor | Small USB stick form factor |
| Audio Inputs | 2 stereo analog input connectors (Line-in and Mic-in) |
| Audio Outputs | 2 stereo analog output connectors (Line-Out and Headphone-Out) |
| Control Interface | I2C protocol for control data, I2S protocol for audio data |
| EEPROM | 32KB I2C serial EEPROM for storing commands and firmware |
| Power Supply | Powered via USB connection |
| Operating System Compatibility | Microsoft Windows™ XP and later |
| Digital Voltage Supply | 1.26V – 1.95V (D-LDO enabled), 1.9V – 3.6V (LDO input) |
Key Features
- Programmable inputs and outputs with extensive routing capabilities
- Support for audio effects and signal processing
- Easy-to-use AIC3254 Control Software (CS) for configuration and control
- On-board push button and LED for script cycling and user feedback
- USB-MODEVM Interface for selecting communication protocols (I2C, I2C Fast, 8-bit register SPI)
- Command-Line Interface for executing and generating scripts
- Status Flags and Register Tables panels for monitoring the TLV320AIC3254 status
Applications
The TLV320AIC3254EVM-U is designed to facilitate the development of various audio applications, particularly in portable audio devices such as:
- Smartphones
- Tablets
- Digital audio players
- Professional audio equipment
- Consumer electronics
- Innovative sound processing applications
Q & A
- What is the TLV320AIC3254EVM-U used for?
The TLV320AIC3254EVM-U is an evaluation module for the TLV320AIC3254 audio codec, used to evaluate and develop various audio applications.
- How is the TLV320AIC3254EVM-U powered?
The module is powered via a USB connection to a personal computer.
- What types of audio inputs and outputs does the TLV320AIC3254EVM-U support?
The module supports 2 stereo analog input connectors (Line-in and Mic-in) and 2 stereo analog output connectors (Line-Out and Headphone-Out).
- What is the role of the AIC3254 Control Software (CS)?
The AIC3254 CS is an intuitive tool for configuring and controlling the TLV320AIC3254, providing access to various features and configurations.
- How does the on-board EEPROM function in the TLV320AIC3254EVM-U?
The 32KB I2C serial EEPROM stores TLV320AIC3254 commands (scripts) and the TAS1020B firmware.
- What communication protocols are supported by the TLV320AIC3254EVM-U?
The module supports I2C Standard, I2C Fast, and 8-bit register SPI, although only I2C is used in this EVM.
- How do you cycle through scripts on the TLV320AIC3254EVM-U?
Scripts can be cycled through using the on-board push button, with feedback provided by an LED.
- What is the purpose of the Command-Line Interface panel?
The Command-Line Interface panel allows users to communicate with the TLV320AIC3254 using a simple scripting language, executing and generating scripts.
- What are some typical applications of the TLV320AIC3254EVM-U?
Typical applications include portable audio devices, professional audio equipment, consumer electronics, and innovative sound processing applications.
- How do you adjust playback volume on the TLV320AIC3254EVM-U?
Playback volume can be adjusted by opening the “Sounds and Audio Devices” in the “Control Panel” and adjusting the volume settings for the selected device.
