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1. (WO2015117493) FLASH CONTROL METHOD AND CONTROLLER

Pub. No.:    WO/2015/117493    International Application No.:    PCT/CN2014/093473
Publication Date: Fri Aug 14 01:59:59 CEST 2015 International Filing Date: Thu Dec 11 00:59:59 CET 2014
IPC: G06F 12/00
Applicants: SANECHIPS TECHNOLOGY CO., LTD.
深圳市中兴微电子技术有限公司
Inventors: ZANG, Xiaofeng
臧晓峰
YU, Xiang
于翔
Title: FLASH CONTROL METHOD AND CONTROLLER
Abstract:
Disclosed are a flash controller and method. The controller comprises: an address control unit that receives a flash read or write command, the read or write flash address and length, and the buffer address in the chip inputted by a CPU, then transmits to a flash command execution unit the read or write command and receives the command execution status returned by the flash command execution unit, or transmits to an erase unit an erase command; a cache that buffers pre-write flash data from an internal buffer or data read out from the flash command execution unit, and transmits data read out from the flash command execution unit to the internal buffer, or transmits the data of the internal buffer to the flash command execution unit; the flash command execution unit that executes the read or write command transmitted by the address control unit, or executes the erase command transmitted by the erase unit, and returns the command execution status to the address control unit; the erase unit that executes the erase command transmitted by the address control unit, and, upon the completion of the erase, notifies the address control unit to transmit a write command to the flash command execution unit.