User Manual

Apollo3 Blue Datasheet
DS-A3-0p9p1 Page 355 of 909 2019 Ambiq Micro, Inc.
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9.14.1.5 FIFOCTRLO Register
FIFOCTR Low Byte
OFFSET: 0x7C
This register allows the host to read the lower eight bits of the FIFOCTR register.
9.14.1.6 FIFOCTRUP Register
FIFOCTR Upper Byte
OFFSET: 0x7D
This register allows the host to read the upper two bits of the FIFOCTR register.
Table 515: FIFOCTRLO Register
0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
FIFOCTRLO
Table 516: FIFOCTRLO Register Bits
Bit Name Reset RW Description
7:0 FIFOCTRLO 0x0 RO Reads the lower eight bits of FIFOCTR
Table 517: FIFOCTRUP Register
0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
RSVD
FIFOCTRUP
Table 518: FIFOCTRUP Register Bits
Bit Name Reset RW Description
1:0 FIFOCTRUP 0x0 RO Reads the upper two bits of FIFOCTR