Patent ID: 6597628
Filing Date: 2003-07-22
Classification: G11C

Abstract:
An apparatus for driving a receive strobe signal for a double-data-rate memory storage device in a computing system, wherein the receive strobe signal remains at a defined digital level when it is not driven by the double-data-rate memory storage device, the apparatus comprising:a plurality of multiplex latches, each multiplex latch having a selector input, wherein the selector input is driven by a phase signal, each multiplex latch being clocked by a 2X clock, one of the multiplex latches having a receive enable signal as one of its inputs, wherein the receive enable signal is synchronous to a system clock; a plurality of latches, wherein at least two latches have inputs connected to outputs of the multiplex latches; a gate latch, wherein the gate latch is set by an inverted output from one of the latches; and an AND gate having at least a first input and a second input, the first input of the AND gate is connected to the receive strobe signal and the second input of the AND gate is connected to an output of the gate latch.