The BTE 1.0 Reference Design is a hardware reference design for a Behind-The-Ear (BTE) hearing aid using the Rhythm SB3231 preconfigured DSP system. It contains a single SB3231 device which enables implementation of a complete digital hearing aid with state-of-the-art features and specifications. This reference design assumes that the BTE will be assembled using point-to-point wiring of the components. Therefore, no description of a PCB design is given. A flex PCB implementation is a preferred component interconnect method for large production volumes, but is beyond the scope of this document.