Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2005-07-12
2005-07-12
Elmore, Reba I. (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S167000
Reexamination Certificate
active
06918016
ABSTRACT:
An apparatus and method which block the strobing of a data FIFO array in a memory controller of a computer system after the data strobe has entered a fluctuating tristate phase, in particular in the setting of a system using double date rate (DDR) DRAM devices. Such a system generally includes DIMMs (dual in-line memory modules) driven by, and driving, data strobes over a bidirectional bus. Because of the use of a bus instead of point-to-point connections, the data strobes are allowed to fluctuate in a tristate phase, during which time false strobes could corrupt data in an input FIFO array coupled to a requesting device before capture of requested data. A circuit is presented which enables a masking circuit to allow passage of the strobe signals in response to a gate reset signal generated by the memory controller, but subsequently blocks the strobe signals before the strobe enters its tristate phase.
REFERENCES:
patent: 6034916 (2000-03-01), Lee
patent: 6067260 (2000-05-01), Ooishi et al.
patent: 6252804 (2001-06-01), Tomita
patent: 6404697 (2002-06-01), Ryu et al.
patent: 6424590 (2002-07-01), Taruishi et al.
patent: 2001/0007541 (2001-07-01), Hirakawa
Advanced Micro Devices , Inc.
Elmore Reba I.
Heter Erik A.
Kivlin B. Noäl
Meyertons Hood Kivlin Kowert & Goetzel P.C.
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