RM0046 Functional Safety
Doc ID 16912 Rev 5 741/936
Global Configuration Register (GCR)
The Global Configuration Register (GCR) controls global configurations related to register
protection.
Table 389. Soft Lock Bits vs. Protected Address
Soft Lock Bit Protected address
SLBR0[SLB0] MR0
SLBR0[SLB1] MR1
SLBR0[SLB2] MR2
SLBR0[SLB3] MR3
SLBR1[SLB0] MR4
SLBR1[SLB1] MR5
SLBR1[SLB2] MR6
SLBR1[SLB3] MR7
SLBR2[SLB0] MR8
... ...
Figure 421. Global Configuration Register (GCR)
Address:
Base + 0x3FFC Access: Read Always; Supervisor write
0123456789101112131415
R
HLB
0000000
UAA
0000 000
W
Reset0000000000000000
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R00000000 00000000
W
Reset0000000000000000
Table 390. GCR field descriptions
Field Description
HLB
Hard Lock Bit
This register cannot be cleared once it is set by software. It can only be cleared by a system reset.
0 All SLB bits are accessible and can be modified.
1 All SLB bits are write protected and can not be modified.
UAA
User Access Allowed
0 The registers in the module under protection can only be written in supervisor mode. All write
accesses in non-supervisor mode are not executed and a transfer error is issued. This access
restriction is in addition to any access restrictions imposed by the protected IP module.
1 The registers in the module under protection can be accessed in the mode defined for the module
registers without any additional restrictions.
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