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AP-SDMxxxxXPANS-HTX

3

© 2011 Apacer Technology Inc.

Rev. 1.2

1. Product Description

1.1

Introduction

Apacer’s SATA Disk Module (SDM) is a solid-state disk (SSD) drive that contains a controller, embedded

firmware, and flash media along with a male connector. Using NAND flash memory devices, the SDM drive

interfaces with the host allowing data to be seamlessly transferred between the host and the flash devices.

The

SDM drive is designed with a single-chip controller, offering capacities of up to four gigabytes and

of up to thirty five megabytes per second, which is much faster than any other competitor in the market.

In addition to buffer management through dynamical allocation, the SDM adopts the static wear-leveling

scheme to allow uniform use of all storage blocks, ensuring that the lifetime of a flash media can be

significantly increased and the disk performance is optimized as well. The SDM provides the S.M.A.R.T.

feature complies to the SATA Rev. 2.6, ATA/ATAPI-7 specifications and uses the standard SMART command

B0h to read data from the drive. This feature protects the user from unscheduled downtime by monitoring and

storing critical drive performance.

1.2

Functional Block Diagram

interface. The controller integrates the flash management unit with the controller itself to support multi-channel,

multi-bank flash arrays. Figure 1-1 shows the functional block diagram.

Figure 1-1 Apacer SDM block diagram

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Flash

Controller

SATA

Interface

Flash Media