Memory system and associated method for disabling address buffers connected to unused SIMM slots
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United States of America Patent
Stats
-
Aug 31, 1993
Grant Date -
N/A
app pub date -
Jun 19, 1990
filing date -
Jun 19, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A memory circuit for use in a data processing system is accessed by address signals and includes interconnection circuitry for at least one memory module. The memory circuit further includes an address buffer for transmitting the address signals to the interconnection circuits if and only if the at least one memory module is present. A line interconnects the output enable pin of an address buffer to a grounded PRESENT (PRES) pin on a (single in-line memory module (SIMM) when it is installed in a socket. The line to the address buffer enable pin includes a pull-up resistor portion so that the address buffer is disabled unless a SIMM is connected to the socket.
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