Embedded multimedia card (eMMC), host controlling eMMC, and method operating eMMC system
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United States of America Patent
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Aug 30, 2016
Grant Date -
Mar 20, 2014
app pub date -
Sep 13, 2013
filing date -
Sep 14, 2012
priority date (Note) -
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Abstract
An eMMC includes flash memory including an extended card specific data (CSD) register (“EXT_CSD register”), and an eMMC controller that controls operation of the flash memory. The eMMC controller is receives a clock from a host via a clock line, receives a SEND_EXT_CSD command from the host via a command line, and provides the host with eMMC information stored in the EXT_CSD register via a data bus in response to the SEND_EXT_CSD command, the eMMC information including maximum operating frequency information for the eMMC.
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