Various technologies described herein pertain to controlling floating diffusion gain using a charge pump. An exposed surface area of a silicon layer where silicon can be removed is defined. In addition, separate input and output ports are provided. The one or more processors are responsive to selection of at least one of the plurality of inputs to reproduce select rows of compressed digitized audio data stored in the data in an audio format and to provide information to the display. The slave serial interface is responsive to a read temperature command issued by the master serial interface to return a first temperature value associated with the processor.