Memory address generation circuit for dynamic RAM used in mobile phone, controls select signals for column address strobe and row address strobe addresses, for memory mapping based on system configuration

摘要

A column address strobe (CAS) address selection circuits output CAS address signal using column address signals and select signals, and a row address strobe (RAS) address selection circuit outputs RAS address signal using row address signals and select signals. The CAS and RAS address select signals are controlled to perform memory mapping according to the system configuration.