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1.0 Introduction to the SDP3B FlashDisk
The SanDisk SDP3B FlashDisk products provide
high capacity solid state flash memory that
electrically complies with the Personal Computer
Memory Card International Association ATA (PC
Card ATA) standard. (In Japan, the applicable
standards group is JEIDA.) The SDP3B FlashDisk
also supports a True IDE Mode that is electrically
compatible with an IDE disk drive. SDP3B
FlashDisks provide up to 220 million bytes
(Megabytes, MBytes or MB) of formatted storage
capacity in a Type II or Type III form factor. The
host system can support as many cards as there are
Type II or III PCMCIA slots.
The SDP3B FlashDisk uses SanDisk Flash
memory chips which were designed by SanDisk
specifically for use in mass storage applications.
In addition to the mass storage specific Flash
1.1
Scope
This document describes the key features and
specifications of the SDP3B FlashDisk, as well as
the information required to interface this product
to a host system.
SanDisk SDP3B FlashDisk Product Manual © 1998 SANDISK CORPORATION
Figure 1-1 SDP3B FlashDisk Block Diagram
SDP3B FlashDisk Product Manual
memory chips, the SDP3B FlashDisks include an
on-card intelligent controller that provides a
high level interface to the host computer. This
interface allows a
commands to the memory card to read or write
blocks of memory. A block of memory consists of
512 bytes of data and is protected by a powerful
Error Correcting Code (ECC).
The
SDP3B
FlashDisk
controller manages interface
storage and retrieval as well as ECC, defect
handling and diagnostics, power management and
clock control. Once the SDP3B FlashDisk has been
configured by the host, it appears to the host as a
standard ATA (IDE) disk drive. Additional ATA
commands have been provided to enhance system
performance.
1.2
Product Models
The SDP3B FlashDisk is available in 2 to 220
megabyte capacities. All SDP3B FlashDisks are
shipped formatted with a DOS 5.0 file structure.
host
computer to issue
on-card
intelligent
protocols, data
7
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