The XFS3031CN is a Chinese voice synthesis chip from iFlytek Digital Technology Co., Ltd. It receives text via a UART interface and outputs synthesized speech. The chip supports multiple character encodings (GB2312, GBK, BIG5, Unicode) and offers various control commands such as synthesize, stop, pause, resume, and power‑down.
The datasheet provides detailed pin definitions, packaging information (LQFP64, 10 mm × 10 mm × 1.4 mm), electrical characteristics, and a list of built‑in sound and chord prompts. It also describes hardware and software methods for querying chip status and outlines ordering information. This manual is written in Chinese.
| Package | LQFP64, 64 pins, 10 mm × 10 mm × 1.4 mm |
|---|---|
| Maximum text length per synthesis | 199 bytes |
| Supported character encodings | GB2312, GBK, BIG5, Unicode |
| Volume levels | 16 levels |
| Built‑in prompt sounds | 7 sound prompts and 30 chord prompts |
The chip is packaged in an LQFP64 with 64 pins.
The "停止合成命令" (stop synthesis command) stops the current synthesis action.
Status can be queried via hardware pins (RDY or RD7) or by sending a status‑query command frame.
The chip supports 16 discrete volume levels.