System Status and Configuration Module (SSCM)
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor 1219
In order to unsecure the device, the password needs to be written as follows: first the upper word to the
PWCMPH register, then the lower word to the PWCMPL register. The SSCM compares the password and
if the password is correct, unlocks the device.
38.3 Functional description
The primary purpose of the SSCM is to provide information about the current state and configuration of
the system that may be useful for configuring application software and for debug of the system.
Address: 0x0010 Access: Read/Write
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
W PWD_LO[0:15]
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
W PWD_LO[16:31]
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 38-7. Password Comparison Register Low Word (PWCMPL)
Table 38-11. Password Comparison Register field descriptions
Field Description
0-31
PWD_HI
[0:31]
Upper 32 bits of the password
0-31
PWD_LO
[0:31]
Lower 32 bits of the password
Table 38-12. PWCMPH/L Allowed Register Accesses
8-bit 16-bit 32-bit
1
1
All 32-bit accesses must be aligned to 32-bit addresses (i.e. 0x0, 0x4, 0x8 or 0xC).
READ Allowed Allowed Allowed
WRITE Not Allowed Not Allowed Allowed
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