Samsung Electronics Co., Ltd.

Skhynix Inc.

Yonsei University

Ipoom Jeong

Won Woo Ro

Gun Ko

Hyunwuk Lee

Jiwon Lee

Min Seong Kim

Sung Jae Lee

Hongju Kal

Yong Tag Song

A memory management unit includes a TLB configured to cache PTEs including a mapping between a virtual and a physical frame number, and to convert a virtual address into a physical address using the cached PTEs. A page table walk request queue is configured to queue page requests corresponding to a virtual page number when a TLB miss is occurred, and one or more PTWs are configured to acquire a PTE from the main memory, and to convert the virtual page numbers into physical frame numbers using the PTE. A PTW is configured to select associated page table walk requests having the same base address of corresponding virtual page numbers, to consecutively provide cache line requests for acquiring PTEs corresponding to the associated page table walk requests, to acquire the PTEs corresponding to the associated PTE requests, and to provide the acquired PTEs to the TLB.

Memory management unit and method of walking page table

A memory system includes a memory device including a first area being refreshed according to a first refresh period and a second area begin refreshed according to a second refresh period longer than the first refresh period. The memory system also includes a memory controller configured to generate a write command and a write data corresponding to a first write request and a first data.

Memory device including a plurality of area having different refresh periods, memory controller controlling the same and memory system including the same

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Seoul, South Korea

Ipoom Jeong