FTL (3) 썸네일형 리스트형 System Software for Flash Memory: A Survey Abstract. Recently, flash memory is widely adopted in embedded ap- plications since it has several strong points: non-volatility, fast access speed, shock resistance, and low power consumption. However, due to its hardware characteristic, namely \erase before write", it requires a software layer called FTL (Flash Translation Layer). This paper surveys the state-of-the-art FTL software for °ash m.. FTL Erase Unit 1 Erase Unit 2 : : Erase Unit n Sector 1 Erase Unit Header Sector Allocation Map Sector 2 Sector 3 Not Used Sector 4 Data Sector 5 Sector 6 Sector 7 Sector 8 Erase Unit Header Field Size (bytes) Description Validation 5 EU가 valid한지 검사하기 위한 code Logical EUN 2 현재 EU의 논리적인 번호 Sector Size 1 Sector의 크기 Erase Unit Size 1 EU의 크기 First Physical EUN 2 FTL에서 사용하는 첫 번째 EU의 번호 Num Erase Units 2 E.. Understanding the Flash Translation Layer (FTL) Specification Understanding the Flash Translation Layer (FTL) Specification CONTENTS 1.0 INTRODUCTION 2.0 OVERVIEW OF FLASH TRANSLATION LAYER 2.1 Virtual Block Device 2.2 Flash Technology 3.0 ERASE UNITS 3.1 Erase Unit Header 3.1.1 Flags 3.2 Block Allocation Information 3.3 Block Allocation Map 4.0 VERIFY FTL PARTITION 5.0 VIRTUAL BLOCK MAP–VIRTUAL-TO-LOGICAL MAPPING 5.1 First Virtual Mapped Address 6.0 VIRTU.. 이전 1 다음