PXD10RM Datasheet, PDF (571/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

Table 17-15. SLL field descriptions (continued)
Field
Description
11 STSLK: Secondary Test/Shadow address space block LocK (Read/Write)
This bit is used as an alternate means to lock the block of Test and Shadow Address Space from Program
and Erase (Erase is any case forbidden for Test block).
A value of 1 in the STSLK register signifies that the Test/Shadow block is locked for Program and Erase.
A value of 0 in the STSLK register signifies that the Test/Shadow block is available to receive Program and
Erase pulses.
The STSLK register is not writable once an interlock write is completed until MCR.DONE is set at the
completion of the requested operation. Likewise, the STSLK register is not writable if a high voltage
operation is suspended.
Upon reset, information from the Test Flash block is loaded into the STSLK register. The STSLK bit may
be written as a register. Reset will cause the bit to go back to its Test Flash block value. The default value
of the STSLK bit (assuming erased fuses) would be locked.
STSLK is not writable unless SLE is high.
0: Test/Shadow Address Space Block is unlocked and can be modified (if also LML.TSLK=0).
1: Test/Shadow Address Space Block is locked and cannot be modified.
12:13 Reserved (Read Only).
Write these bits has no effect and read these bits always outputs 0.
14:15
SMK1-0: Secondary Mid address space block locK 1-0 (Read/Write)
These bits are used as an alternate means to lock the blocks of Mid Address Space from Program and
Erase.
For Code Flash 0, SMK1-0 are related to sectors B0F7-6, respectively.
For Code Flash 1, SMK1-0 are related to sectors B2F3-2, respectively.
A value of 1 in a bit of the SMK register signifies that the corresponding block is locked for Program and
Erase.
A value of 0 in a bit of the SMK register signifies that the corresponding block is available to receive
Program and Erase pulses.
The SMK register is not writable once an interlock write is completed until MCR.DONE is set at the
completion of the requested operation. Likewise, the SMK register is not writable if a high voltage operation
is suspended.
Upon reset, information from the Test Flash block is loaded into the SMK registers. The SMK bits may be
written as a register. Reset will cause the bits to go back to their Test Flash block value. The default value
of the SMK bits (assuming erased fuses) would be locked.
In the event that blocks are not present (due to configuration or total memory size), the SMK bits will default
to locked, and will not be writable. The reset value will always be 1 (independent of the Test Flash block),
and register writes will have no effect.
SMK is not writable unless SLE is high.
0: Mid Address Space Block is unlocked and can be modified (if also LML.MLK=0).
1: Mid Address Space Block is locked and cannot be modified.
Freescale Semiconductor
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
17-21