mtfdaac008saa-1a1 Micron Semiconductor Products, mtfdaac008saa-1a1 Datasheet - Page 14

• Manufacturer Part Number: mtfdaac008saa-1a1
• Description: Nand Flash Solid State Drive
• Manufacturer: Micron Semiconductor Products

SECURITY UNLOCK F2h
Table 10:
SEEK 70h
SET FEATURES EFh
SET MULTIPLE MODE C6h
2.5 PDF: 09005aef82cb3bdc / Source: 09005aef82cb3c5e
realssd_flash_drive__2.fm - Rev. B 5/08 EN
SECURITY UNLOCK Data
The SECURITY UNLOCK (F2h) command transfers a sector of data from the host to the
SSD, as shown in Table 10.
If the identifier bit is set to compare the master password and the SSD security level is
set at high, then the master password supplied by the host during the F2h command will
be compared with the master password stored in the SSD.
If the identifier bit is set to compare the master password and the SSD security level is
set at maximum, then the SSD will reject the F2h command.
If the identifier bit is set to compare the user password, then the user password that is
supplied by the host during the F2h command will be compared with the current user
password stored in the SSD.
If a comparison fails, then the SSD returns an abort error to the host and decrements the
internal unlock counter. By default, the unlock counter in the SSD is set to “5.” If the
counter reaches “0,” then the SECURITY UNLOCK (F2h) and SECURITY ERASE UNIT
(F4h) commands will be aborted until a power-on or hard reset event resets the counter.
When the SSD is in unlock mode, an F2h command will not cause any decrements to the
unlock counter.
The SEEK (70h) command is a non-data command. When the host sends a 70h com-
mand to the SSD, the SSD sets the BSY bit in the RSR and completes the 70h command.
The SSD then clears the BSY bit and sends an INTRQ interrupt to the host. Upon receipt
of the interrupt, the host reads the RSR. The SSD then clears the INTRQ bit in the regis-
ter.
The SET FEATURES (EFh) command is used by the host to inform the SSD of its capabil-
ities and to establish the features of the SSD that will be enabled and disabled.
The SET MULTIPLE MODE (C6h) command enables the SSD to perform READ MULTI-
PLE (C4h) and WRITE MULTIPLE (C5h) operations and configures the block count
number for those operations.
Word
0
1–16
17–255
Details
Control word
Bits [15:1]
Bit 0
Password from host (16 words)
Reserved
Reserved
Identifier
0 = Compare user password
1 = Compare master password
14
Micron Technology, Inc., reserves the right to change products or specifications without notice.
2.5-Inch NAND Flash SSD
Command Definitions
©2007 Micron Technology, Inc. All rights reserved.
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