User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 481 of 909 2019 Ambiq Micro, Inc.
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11.7.2.30ENA Register
GPIO Enable Register A
OFFSET: 0x000000A0
INSTANCE 0 ADDRESS: 0x400100A0
GPIO Enable Register A
11.7.2.31ENB Register
GPIO Enable Register B
OFFSET: 0x000000A4
INSTANCE 0 ADDRESS: 0x400100A4
GPIO Enable Register B
Table 681: WTCB 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 WTCB
Table 682: WTCB Register Bits
Bit Name Reset RW Description
31:18 RSVD 0x0 RO
RESERVED
17:0 WTCB 0x0 WO
Clear the GPIO49-32 write data.
Table 683: ENA 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
ENA
Table 684: ENA Register Bits
Bit Name Reset RW Description
31:0 ENA 0x0 RW
GPIO31-0 output enables