User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 342 of 909 2019 Ambiq Micro, Inc.
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9.13.2.4 FUPD Register
FIFO Update Status
OFFSET: 0x0000010C
INSTANCE 0 ADDRESS: 0x5000010C
FIFO Update Status
9.13.2.5 FIFOCTR Register
Overall FIFO Counter
OFFSET: 0x00000110
INSTANCE 0 ADDRESS: 0x50000110
Overall FIFO Counter
Table 477: FUPD 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
IOREAD
FIFOUPD
Table 478: FUPD Register Bits
Bit Name Reset RW Description
31:2 RSVD 0x0 RO
RESERVED
1 IOREAD 0x0 RO
This bitfield indicates an IO read is active.
0FIFOUPD 0x0RW
This bit indicates that a FIFO update is underway.
Table 479: FIFOCTR 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 FIFOCTR
Table 480: FIFOCTR Register Bits
Bit Name Reset RW Description
31:10 RSVD 0x0 RO
RESERVED