Flash Memory
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor
565
17.2.6.7
Non-volatile Secondary Low/Mid Address Space Block Locking Register
(NVSLL)
The Secondary Low/Mid Address Space Block Locking register provides an alternative means to protect
blocks from being modified. These bits, along with bits in the LML register, determine if the block is
locked from Program or Erase. An “OR” of LML and SLL determine the final lock status.
The SLL register has a related Non-volatile Secondary Low/Mid Address Space Block Locking register
located in Test flash that contains the default reset value for SLL: The NVSLL register is read during the
reset phase of the flash module and loaded into the SLL.
The NVSLL register is a 64-bit register, the 32 most significant bits of which (bits 63-32) are ‘don’t care’
and eventually used to manage ECC codes.
Address Offset: 0x403DF8
Delivery value: 0xFFFFFFFF
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
SLE
0
0
0
0
0
0
0
0
0
0
STSL
K
0
0
SMK1 SMK0
r/0
r/0
r/0
r/0
r/0
r/0
r/0
r/0
r/0
r/0
r/0
rw/X
r/0
r/0
rw/X
rw/X
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
SLK1
5
SLK1
4
SLK1
3
SLK1
2
SLK1
1
SLK1
0
SLK9 SLK8 SLK7 SLK6 SLK5 SLK4 SLK3 SLK2 SLK1 SLK0
rw/X
rw/X
rw/X
rw/X
rw/X
rw/X
rw/X
rw/X
rw/X
rw/X
rw/X
rw/X
rw/X
rw/X
rw/X
rw/X
Figure 17-6. Non-Volatile Secondary Low/Mid Address Space Block Locking Register (NVSLL)
Table 17-15. SLL field descriptions
Field
Description
0
SLE: Secondary Low/mid address space block Enable (Read Only)
This bit is used to enable the Lock registers (STSLK, SMK1-0 and SLK15-0) to be set or cleared by
registers writes.
This bit is a status bit only. The method to set this bit is to write a password, and if the password matches,
the SLE bit will be set to reflect the status of enabled, and is enabled until a reset operation occurs. For
SLE the password 0xC3C33333 must be written to the SLL register.
0: Secondary Low/Mid Address Locks are disabled: STSLK, SMK1-0 and SLK15-0 cannot be written.
1: Secondary Low/Mid Address Locks are enabled: STSLK, SMK1-0 and SLK15-0 can be written.
1:10
Reserved (Read Only).
Write these bits has no effect and read these bits always outputs 0.
Содержание MPC5602S
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Страница 82: ...Memory Map MPC5606S Microcontroller Reference Manual Rev 7 80 Freescale Semiconductor...
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