AK09916 Datasheet, PDF (21/29 Pages) Asahi Kasei Microsystems – 3-axis Electronic Compass

[AK09916]
11.3. Detailed Description of Register
11.3.1. WIA: Who I Am
Addr.
Register
name
D7
D6
D5
D4
D3
D2
D1
D0
Read-only register
00h
WIA1
0
1
0
0
1
0
0
0
01h
WIA2
0
0
0
0
1
0
0
1
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 AK09916. It is described in one byte and fixed value.
09h: fixed
11.3.2. RSV: Reserved
Addr.
02h
03h
Register
name
RSV1
RSV2
D7
RSV17
RSV27
D6
D5
D4
Read-only register
RSV16 RSV15 RSV14
RSV26 RSV25 RSV24
D3
RSV13
RSV23
D2
RSV12
RSV22
D1
RSV11
RSV21
D0
RSV10
RSV20
RSV1[7:0] bits/ RSV2[7:0] bits: Reserved register for AKM.
11.3.3. ST1: Status 1
Addr.
Register
name
D7
D6
D5
D4
D3
D2
D1
D0
Read-only register
10h
ST1
0
0
0
0
0
0
DOR DRDY
Reset
0
0
0
0
0
0
0
0
DRDY: Data Ready
“0”: Normal
“1”: Data is ready
DRDY bit turns to “1” when data is ready in Single measurement mode, Continuous measurement mode 1, 2,
3, 4 or Self-test mode. It returns to “0” when any one of ST2 register or measurement data register (HXL to
TMPS) is read.
DOR: Data Overrun
“0”: Normal
“1”: Data overrun
DOR bit turns to “1” when data has been skipped in Continuous measurement mode 1, 2, 3, 4. It returns to “0”
when any one of ST2 register or measurement data register (HXL to TMPS) is read.
015007392-E-02
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2015/12