Wireless Digital Full-Duplex Voice Transceiver

Wireless voice applications require a microcontroller to quickly compress and decompress audio, efficiently control an RF transceiver, and accurately sample and output an audio stream. With its small, 4x4 mm size and high level of integration combining an on-chip ADC, DAC, and a 25 MIPS peak CPU, the C8051F330 is an ideal choice for wireless audio designs. This reference design demonstrates how an F330 can be utilized for such applications.

This document includes the following:

A description of the system hardware
PCB design notes
A discussion about the software system
Notes on system usage
Example code to sample, compress, transmit, receive, decompress, and output a voice signal
A schematic, bill of materials, and an example board layout showing the F330, RF transceiver, and support
components