Samsung Electronics Co., Ltd.

Seong Sik Hwang

Sung Ho Seo

Jung Pil Lee

Kyung Phil Yoo

Myung Sub Shin

Kyoung Lae Cho

Jin Hyeock Choi

Young Gyu Kang

Young Gu Kang

Jin Hyeok Choi

An embedded multimedia card (eMMC) is provided. The eMMC includes a clock channel receiving a clock output from a host, data channels receiving data signals from the host, and a command channel receiving a SWITCH command including delay offset values from the host so as to adjust a delay of at least one of the data signals, which are received, in response to the delay offset values.

Embedded multimedia card (eMMC), host controlling eMMC, and method operating eMMC system including the use of a switch command defining an adjustment delay for a data signal

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.

Embedded multimedia card (eMMC), host controlling eMMC, and method operating eMMC system

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Seoul, South Korea

Seong Sik Hwang