Patent ID: 6014338
Filing Date: 2000-01-11
Classification: G11C

Abstract:
A system for reading data from a multi-ported register file of the type including an array of rows and columns of register file cells, which each port of a register file in one of the rows coupled to a bit line, said system comprising:a plurality of bit line segments, each coupled to a subgroup of the rows of register file cells in the array;a plurality of local sense amplifiers, each local sense amp having an input coupled to a respective local bit line, having a precharge circuit of precharging the local bit line prior to sensing a bit read from a register file cell in the array coupled to the bit line segment, and having an output port for providing a output signal determined by the value of a sensed bit;a global bit line, coupled to the outputs ports of each local sense amp; anda global sense amp, having an input coupled to the global bit line and having a precharge circuit for precharging the global bit line prior to sensing a signal on the global bit line.