User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 482 of 909 2019 Ambiq Micro, Inc.
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11.7.2.32ENSA Register
GPIO Enable Register A Set
OFFSET: 0x000000A8
INSTANCE 0 ADDRESS: 0x400100A8
GPIO Enable Register A Set
11.7.2.33ENSB Register
GPIO Enable Register B Set
OFFSET: 0x000000AC
INSTANCE 0 ADDRESS: 0x400100AC
GPIO Enable Register B Set
Table 685: ENB 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 ENB
Table 686: ENB Register Bits
Bit Name Reset RW Description
31:18 RSVD 0x0 RO
RESERVED
17:0 ENB 0x0 RW
GPIO49-32 output enables
Table 687: ENSA 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
ENSA
Table 688: ENSA Register Bits
Bit Name Reset RW Description
31:0 ENSA 0x0 RW
Set the GPIO31-0 output enables