User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 477 of 909 2019 Ambiq Micro, Inc.
All rights reserved.
11.7.2.21PADKEY Register
Key Register for all pad configuration registers
OFFSET: 0x00000060
INSTANCE 0 ADDRESS: 0x40010060
Key Register for all pad configuration registers
11.7.2.22RDA Register
GPIO Input Register A
OFFSET: 0x00000080
INSTANCE 0 ADDRESS: 0x40010080
GPIO Input Register A
11.7.2.23RDB Register
GPIO Input Register B
OFFSET: 0x00000084
Table 665: PADKEY 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
PADKEY
Table 666: PADKEY Register Bits
Bit Name Reset RW Description
31:0 PADKEY 0x0 RW
Key register value.
Key = 0x73 - Key
Table 667: RDA 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
RDA
Table 668: RDA Register Bits
Bit Name Reset RW Description
31:0 RDA 0x0 RO
GPIO31-0 read data.