This manual mainly introduces the hardware structure and features of the AR168M module, and provides users with relevant information about the module before using it.
The AR168M VOIP module is a low‑cost solution for voice‑over‑IP communication, built around PalmMicro's AR1688 chip. It provides a range of voice codecs, echo cancellation, and support for SIP or IAX2 protocols.
The manual details the module's physical dimensions, power requirements, and all hardware interfaces—including UART, SPI, LAN, LCD, and GPIO—plus pin‑out tables and configuration guidelines. This manual is written in Chinese.
| Dimensions | 43 mm × 34 mm |
|---|---|
| Maximum Voice Output | 11 mW @ 16 Ω |
| Operating Voltage | Core 1.8 V, I/O 3.3 V |
| Typical Power Consumption | < 90 mW (typical) |
| Flash Memory | 2 Mbyte (8‑bit) |
| UART Baud Rate | 19200 bps, N, 8 data bits, 1 stop bit |
| LCD Interface Signals | 16 signals |
| Total Interface Pins | 32 pins |
The AR168M UART operates at 19200 bps, no parity, 8 data bits, 1 stop bit.
The module can output up to 11 mW into a 16 Ω load.
Core voltage is 1.8 V and I/O voltage is 3.3 V.
The LCD interface provides 16 separate signals.