Single ended read scheme with global bitline of multi-port register file

摘要

A read system for a multi-ported register file includes a segmented bit line coupled to a global bit line. Each local bit line segment is coupled to a sub-set of the register files in a column to reduce device load and interconnect wire load. The local bit line segments are each coupled to the global bit line by a local sense amplifier. Both the local bit line segments and global bit line are precharged prior to sensing a bit so that the local sense amplifiers do not require output pull-up transistors.