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