Static information storage and retrieval – Addressing – Multiple port access
Patent
1993-10-14
1995-03-14
Popek, Joseph A.
Static information storage and retrieval
Addressing
Multiple port access
36523002, 365233, 36518902, G11C 800
Patent
active
053982118
ABSTRACT:
An integrated circuit dual port memory provides a preferred port which is always granted priority of memory access when memory access requests arrive simultaneous from both ports of the dual port memory. To implement this priority scheme, the memory request signal from the preferred port controls a multiplexor to select the input signals from the preferred port over the input signals from the non-preferred port. The memory request signal from the preferred port also serves as a busy signal to block a simultaneous memory access by the non-preferred port. In one embodiment, memory request signals of both ports are latched into registers clocked by the same clock signal.
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patent: 5001671 (1991-03-01), Koo et al.
patent: 5142540 (1992-08-01), Glasser
patent: 5276842 (1994-01-01), Sugita
Maas Kelly A.
Willenz Avigdor
Integrated Device Technology Inc.
Popek Joseph A.
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