The invention includes an apparatus and a method for adjusting a power level of a transmission signal for minimal distortion. Programmable integrated circuits include programmable elements that are loaded with configuration data to program programmable logic to perform a custom logic function. This is repeated for the next largest gain factor and so on until a predetermined maximum is reached. The control circuitry also ensures that, at the end of a row access, the wordline is driven low before the corresponding segment is transitioned from active mode to sleep mode. Security in such conferences may be based on a trusted node system or on more complex security procedures.