[AK09915]
11.3. Detailed Description of Registers
11.3.1.WIA: Who I Am
Register
name
Addr.
D7
D6
D5
D4
D3
D2
D1
D0
Read-only register
00h
01h
WIA1
WIA2
0
0
1
0
0
0
0
1
1
0
0
0
0
0
0
0
WIA1[7:0] bits: Company ID of AKM. It is described in one byte and fixed value.
48h: fixed
WIA2[7:0] bits: Device ID of AK09915. It is described in one byte and fixed value.
10h: fixed
11.3.2.RSV: Reserved
Register
Name
Addr.
D7
D6
D5
Read-only register
RSV17 RSV16 RSV15 RSV14 RSV13 RSV12 RSV11 RSV10
D4
D3
D2
D1
D0
02h
RSV
RSV[7:0] bits: Reserved register for AKM.
11.3.3.INFO: Information
Register
Addr.
D7
D6
D5
D4
D3
D2
D1
D0
Name
Read-only register
03h
INFO
0
0
0
0
0
0
0
0
INFO[7:0] bits: Administrative information of AKM. It is described in one byte and fixed value.
00h: fixed
11.3.4.ST1: Status 1
Register
name
Addr.
D7
D6
D5
D4
D3
D2
D1
D0
Read-only register
10h
ST1
Reset
HSM
0
0
0
0
0
0
0
0
0
0
0
DOR
0
DRDY
0
DRDY bit: Data Ready
“0”: Normal
“1”: Data is ready
When FIFO is disabled (FIFO bit = “0”);
DRDY bit turns to “1” when data is ready in Single measurement mode, Continuous measurement mode
1, 2, 3, 4, 5, 6 or Self-test mode. It returns to “0” when any one of ST2 register or measurement data
register (HXL to TMPS) is read.
015006484-E-02
2016/7
- 30 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
