GENERAL DESCRIPTION
The WTS701 is a high quality, fully integrated, single-chip Text-to-Speech solution that is ideal for use in applications such as automotive appliances, GPS/navigation systems, cellular phones and other portable products or accessories. The WTS701 product accepts ASCII (Unicode and Big5 for Mandarin) input via a SPI port and converts it to spoken audio via an analog output or digital CODEC output.
FEATURES
• Fully Integrated Solution
◾ Single-chip compact text-to-speech translation
◾ No algorithm development required
◾ Selectable digital and analog audio output
◾ Simple SPI interface
◾ Reprogrammable solution enables loading different voice or language
• Text-To-Speech Algorithm Characteristics
◾ High quality speech synthesis using speech element concatenation
◾ Winbond’s standard 100-year speech retention
◾ Audio stored as uncompressed analog waveform – industry’s highest quality and most natural sounding
• Easy to Use and Control
◾ Real time conversion for streaming text
◾ General text preprocessing and normalization
◾ User customization for special characters such as SMS icons and chat emoticons
◾ User customization for application specific abbreviations
• Language Support
◾ Support U.S. English and Mandarin (Beijing dialect)
◾ Other languages in development or in planning
• Device Management
◾ Accepts ASCII, Unicode or Big5 streaming text
◾ 256-byte text buffer
◾ Playback of Phonetic Alphabet
◾ Variable speed playback
◾ Control of pitch change
◾ Supports Power Down mode.
◾ Supports Pause and Resume, Stop and Finish text conversion commands
◾ Embedded characters support to control speed, volume, case sensitivity, and silent behavior
• Peripheral Control
◾ 16-bit linear PCM slave interface output support
◾ SPI serial port for control commands and status report to system’s host controller
◾ Hardware handshake control signals
◾ Analog audio output with 8Ω speaker driver, digital volume control and line level o/p
◾ Analog audio input (AUXIN) for driving external audio to the speaker
• Low Power Consumption
◾ +2.7 to +3.3V (VCC) Supply Voltage
◾ Operating Current:
ICC Convert = 35 mA (typical)
◾ Standby Current:
ISB < 1µA (typical)
• Device Characteristics
◾ Available in 56-lead TSOP package
◾ Industrial temperature range (-40C to +85C)
◾ 3V/5V logic tolerance