Memory addressing circuit

摘要

A memory addressing circuit allows data stored in consecutive addresses to be fetched simultaneously to improve the data transfer rate in a DRAM system. In addition, the consecutive data may extend across blocks. Specifically, the addressing circuit receives a signal indicating shift up or shift down as input to a predecoder circuit and supplies a CARRY or BORROW signal to a decoder. The decoder receives this signal, which enables it to access a block higher or lower than a block corresponding to an address designated by the original input address. <IMAGE>