MEMORY MODULE REGISTER ACCESS
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United States of America Patent
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Issued Date -
Sep 26, 2024
app pub date -
Feb 26, 2024
filing date -
Apr 6, 2015
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status (Latency Note)
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Abstract
During system initialization, each data buffer device and/or memory device on a memory module is configured with a unique (at least to the module) device identification number. In order to access a single device (rather than multiple buffers and/or memory devices), a target identification number is written to all of the devices using a command bus connected to all of the data buffer devices or memory devices, respectively. The devices whose respective device identification numbers do not match the target identification number are configured to ignore future command bus transactions (at least until the debug mode is turned off.) The selected device that is configured with a device identification number matching the target identification number is configured to respond to command bus transactions.
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