W78M32VP-XBX
TABLE 21 – SECTOR PROTECTION SCHEMES: DYB, PPB AND PPB LOCK BIT COMBINATIONS
Uniques Device PPB Lock Bit
0 = locked
Sector PPB
0 = locked
1 = unlock
Sector DYB
0 = locked
1 = unlock
Sector Protection Status
1 = unlock
Any Sector
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
x
x
1
0
x
x
0
1
Protected through PPB
Protected through PPB
Unportected
Any Sector
Any Sector
Any Sector
Any Sector
Any Sector
Any Sector
Any Sector
Protected through PPB
Protected through PPB
Protected through PPB
Protected through PPB
Unportected
Table 21 contains all possible combinations of the DYB, PPB, and PPB Lock Bit relating to the status of the
sector. In summary, if the PPB Lock Bit is locked (set to “0”), no changes to the PPBs are allowed. The PPB
Lock Bit can only be unlocked (reset to “1”) through a hardware reset or power cycle. See also Figure 8.1 for
an overview of the Advanced Sector Protection feature.
TABLE 22 – LOCK REGISTER
Secured Silicon Sector Address Range
Customer Lockable
ESN Factory Locked
ESN
ExpressFlash Factory Locked
ESN or determinded by customer
Determinined by customer
000000h-000007h
000008h-000007Fh
Determined by customer
Unavailable
TABLE 23 – SECURED SILICON SECTOR ENTRY
(LLD Function = lld_SecSiSectorEntryCmd)
Cycle
Operation
Word Address
Base + 555h
Base + 2AAh
Base + 555h
Data
00AAh
0055h
0088h
Unlock Cycle 1
Unlock Cycle 2
Entry Cycle
Write
Note
Base = Base Address.
TABLE 24 – SECURED SILICON SECTOR PROGRAM
(LLD Function = lld_ProgramCmd)
Cycle
Operation
Word Address
Base + 555h
Base + 2AAh
Base + 555h
Word Address
Data
00AAh
Unlock Cycle 1
Unlock Cycle 2
Program Setup
Program
0055h
Write
0088h
Data Word
Note
Base = Base Address.
Microsemi Corporation reserves the right to change products or specifications without notice.
August 2011 © 2011 Microsemi Corporation. All rights reserved.
Rev. 15
18
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