DATA BUS INVERSION DETECTION MECHANISM

专利名称：DATA BUS INVERSION DETECTION

MECHANISM

发明人：Raymond A. Bertram申请号：US11857503申请日：20070919

公开号：US20090077286A1公开日：20090319

专利附图：

摘要：A bus inversion apparatus includes exclusive-OR gates and an inversion detector.The exclusive-OR gates are coupled to an instant data bus and a last data bus. The databuses have a corresponding plurality of bits, where the exclusive-OR gates perform a

bitwise comparison of the data buses, and provide an exclusive-OR bus. The states of theexclusive-OR bus indicate whether corresponding bits of the data buses are different. Theinversion detector counts the number of the corresponding bits that are different, andindicates that the instant data bus should be inverted. The inversion detector has aplurality of left shift circuits, each configured to perform a logical left shift of input bitsas directed by the states of shift bits, where outputs of the each of the plurality of leftshift circuits indicate a number of a subgroup of the corresponding bits that are different.

申请人：Raymond A. Bertram

地址：Austin TX US

国籍：US

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