SST55LD019A Silicon Storage Technology, Inc., SST55LD019A Datasheet - Page 51

• 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.

ATA Flash Disk Controller
SST55LD019A / SST55LD019B / SST55LD019C
11.2.1.28.4 Set-Max-Unlock
11.2.1.28.5 Set-Max-Freeze-Lock
©2004 Silicon Storage Technology, Inc.
Command (7)
Command (7)
F9H with the content of the Features register equal to 03H.
This command requests a transfer of a single sector of data from the host. Table 11-13 defines the
content of this sector of information.
The password supplied in the sector of data transferred will be compared with the stored Set-Max
password.
If the password compare fails, then the device returns command aborted and decrements the unlock
counter. On the acceptance of the Set-Max-Lock command, this counter is set to a value of five and is
decremented for each password mismatch when Set-Max-Unlock is issued and the device is locked.
When this counter reaches zero, then the Set-Max-Unlock command returns “command aborted” until a
power cycle.
If the password compare matches, then the device transitions to the Set_Max_Unlocked state and all
Set-Max commands will be accepted.
If this command is immediately preceded by a Read-Native-Max-Address command, it will be
interpreted as a Set-Max-Address command.
F9H with the content of the Features register equal to 04H.
The Set-Max-Freeze-Lock command sets the device to Set_Max_Frozen state. After command
completion any subsequent Set-Max commands are rejected.
Commands disabled by Set-Max-Freeze-Lock are:
- Set-Max-Address
- Set-Max-Set-Password
- Set-Max-Lock
- Set-Max-Unlock
If this command is immediately preceded by a Read-Native-Max-Address command, it will be
interpreted as a Set-Max-Address command.
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
X
X
6
6
5
5
51
Drive
Drive
4
4
F9H
03H
F9H
04H
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
3
3
2
2
N/A
N/A
Advance Information
1
1
S71241-02-000
0
0
4/04