Samsung Electronics Co., Ltd.

Jinyong Jung

Il Han Park

Jong-Jin Lee

Sung-Min Hong

Seok-Hoon Kim

Euicheol Lim

Jinseok Ha

Sim Ji Lee

JaeYoung Hur

JiWoong Kwon

A cache managing method of a display driving apparatus may be provided. The display driving apparatus including an encoder to generate compressed data by compressing raw data, a memory to store the compressed data, and a decoder to restore the compressed data and including a payload cache may be provided. The cache managing method including requesting an access to the compressed data, and managing the payload cache using a linked list according to the access request to the compressed data may be provided.

Display driving apparatus and cache managing method thereof

A page descriptor can be stored in advance in a memory management unit under various conditions so that an address translation overhead can be reduced. The memory management unit comprises an address translation unit that receives a memory access request as a virtual address and translates the virtual address to a physical address. A translation lookaside buffer (TLB) stores page descriptors of a plurality of physical addresses, the address translation unit determining whether a page descriptor corresponding to a received virtual address is present in the translation lookaside buffer. A prefetch buffer stores page descriptors of the plurality of physical addresses. The address translation unit, in the event the page descriptor corresponding to the received virtual address is not present in the translation lookaside buffer, further determines whether the page descriptor corresponding to the received virtual address is present in the prefetch buffer; updates the translation lookaside buffer with the page descriptor corresponding to the received virtual address; and performs a translation of the virtual address to a physical address using the page descriptor corresponding to the received virtual address. The prefetch buffer may include sub-prefetch buffers, and may be updated based on access direction information.

System-on-chip and address translation method thereof using a translation lookaside buffer and a prefetch buffer

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Suwon-si, South Korea

Jinyong Jung