XF-S3111 Speech Synthesis Chip Data Manual, introduces the features, functions, application areas, system block diagram, pin definition, function description, serial communication protocol, working mode, electrical characteristics, signal timing diagram, text usage examples and other contents of the chip.
The XF‑S3111 is a Chinese voice synthesis chip from iFlytek, designed for low‑cost embedded speech applications. It receives text via an asynchronous serial interface and outputs synthesized speech through a 10‑bit DAC, supporting multiple text encodings and custom synthesis modes.
The document includes a system block diagram, a complete pin‑out table, electrical limits, serial communication protocol (9600 bps), signal timing diagrams, and extensive examples of text formatting for numbers, dates, and custom prompts. This manual is written in Chinese.
| Supply voltage | 2.7 V ~ 3.6 V |
|---|---|
| Serial baud rate | 9600 bps |
| Audio output resolution | 10‑bit DAC |
| VDD pin voltage | 3.3 V |
The chip uses a serial communication baud rate of 9600 bps.
It operates from 2.7 V to 3.6 V.
The audio output is generated by a 10‑bit DAC.