1. Take off the top covers of the transmitter’s and receiver’s enclosures, and you’ll find that a USB (Universal Serial Bus)-interface PCB (printed-circuit board) takes up most of the internal space. This debugging and control board mates with PC-side software, and production-system designs won’t need it. Such designs can be substantially smaller, less costly, and more power-thrifty as a result.
2. Behind the units’ plastic front panels and underneath intermediary metal shields that block all but the transmitting and receiving antenna arrays are 22×125×6-mm PCBs containing the core circuitry for each device. In this case, too, however, some of the silicon content is exclusive to the evaluation task and won’t appear in a production design. To wit, the top sides of both the transmitter and the receiver modules include Atmel AT91SAM256 microcontrollers to implement stand-alone operation. In an end-customer design, such as a Blu-ray player, a set-top box, a television, or an integrated home-theater setup, the system processor will typically manage the module, making the dedicated microcontroller unnecessary.