SST55LD019A Silicon Storage Technology, Inc., SST55LD019A Datasheet - Page 44

• Manufacturer Part Number: SST55LD019A
• Description: Ata Flash Disk Controllersst's Ata Flash Disk Controller is The Heart of a High Performance, Flash Media-based Data Storage System. The Ata Flash Disk Controller Recognizes The Control, Address, And Data Signals on The Ata/ide Bus And Translates Them
• Manufacturer: Silicon Storage Technology, Inc.

Advance Information
11.2.1.25 Security-Unlock- F2H
11.2.1.26 Seek - 7XH
©2004 Silicon Storage Technology, Inc.
Command (7)
Command (7)
This command requests transfer of a single sector of data from the host. Table 11-6 defines the content
of this sector of information. If the identifier bit is set to Master and the device is in high security level,
then the password supplied is compared with the stored Master password. If the device is in the
maximum security level, then the unlock command will be rejected. If the identifier bit is set to user, then
the device compares the supplied password with the stored User password. If the password compare
fails, the device returns “command aborted” to the host and decrements the unlock counter. This
counter is initially set to five and is decremented for each password mismatch when Security-Unlock is
issued and the device is locked. Once this counter reaches zero, the Security-Unlock and Security-
Erase-Unit commands are command aborted until after a Power-on reset or a hardware reset is
received. Security-Unlock commands issued when the device is unlocked have no effect on the unlock
counter.
This command is effectively a NOP command to the ATA Flash Disk Controller although it does perform
a range check of cylinder and head or LBA address and returns an error if the address is out of range.
Sec Num (3)
Sec Num (3)
Cyl High (5)
Cyl High (5)
Cyl Low (4)
Cyl Low (4)
Sec Cnt (2)
Sec Cnt (2)
Feature (1)
Feature (1)
C/D/H (6)
C/D/H (6)
Bit ->
Bit ->
7
7
1
LBA
X
6
6
SST55LD019A / SST55LD019B / SST55LD019C
5
5
1
44
Cylinder High (LBA 23-16)
Cylinder Low (LBA 15-8)
Drive
Drive
4
4
X (LBA 7-0)
F2H
7XH
X
X
X
X
X
X
X
3
3
ATA Flash Disk Controller
Head (LBA 27-24)
2
2
X
1
1
S71241-02-000
0
0
4/04