User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 115 of 909 2019 Ambiq Micro, Inc.
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3.7.2.36 LOCKAREG Register
Lock Access Register
OFFSET: 0x00000FB0
INSTANCE 0 ADDRESS: 0xE0000FB0
Lock Access Register
3.7.2.37 LOCKSREG Register
Lock Status Register
OFFSET: 0x00000FB4
INSTANCE 0 ADDRESS: 0xE0000FB4
Lock Status Register
Table 102: LOCKAREG Register
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
0
9
0
8
0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
LOCKAREG
Table 103: LOCKAREG Register Bits
Bit Name Reset RW Description
31:0 LOCKAREG 0x0 RW
Key register value.
Key = 0xC5ACCE55 - Key
Table 104: LOCKSREG Register
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
0
9
0
8
0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
RSVD
BYTEACC
ACCESS
PRESENT
Table 105: LOCKSREG Register Bits
Bit Name Reset RW Description
31:3 RSVD 0x0 RO
RESERVED.
2 BYTEACC 0x0 RO
You cannot implement 8-bit lock accesses.