A FIFO memory circuit is for interfacing between circuits with different clock domains. A classifier recognizes various auditory situations and starts interactive adaptation procedures, in the framework of which various settings are to be evaluated. The PCB may thus surround the semiconductor package so that cracks may not be generated in the outer terminals. Memory transactions are received from cacheable entities of a computer system at the incoming memory-transaction dispatch unit, and are then presented to one or more agents. Compensation signal points are determined in the two-dimensional plane in response to a signal error caused by digital quadrature modulation if the non-compensation signal points are used.