AK09915 Datasheet, PDF (30/42 Pages) Asahi Kasei Microsystems – 3-axis Electronic Compass

[AK09915]
11.3. Detailed Description of Registers
11.3.1.WIA: Who I Am
Addr.
00h
01h
Register
name
WIA1
WIA2
D7
D6
D5
D4
D3
D2
D1
D0
Read-only register
0
1
0
0
1
0
0
0
0
0
0
1
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
Addr.
02h
Register
Name
RSV
D7
D6
D5
D4
D3
D2
D1
D0
Read-only register
RSV17 RSV16 RSV15 RSV14 RSV13 RSV12 RSV11 RSV10
RSV[7:0] bits: Reserved register for AKM.
11.3.3.INFO: Information
Addr.
03h
Register
Name
INFO
D7
D6
D5
D4
D3
Read-only register
0
0
0
0
0
D2
D1
D0
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
Addr.
Register
name
D7
D6
D5
D4
D3
D2
D1
D0
Read-only register
10h
ST1
HSM
0
0
0
0
0
DOR DRDY
Reset
0
0
0
0
0
0
0
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
- 30 -
2016/7