AK09915D Datasheet, PDF (31/43 Pages) Asahi Kasei Microsystems – 3-axis Electronic Compass

[AK09915D]
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 AK09915D. 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
1
0
INFO[7:0] bits: Administrative information of AKM. It is described in one byte and fixed value.
02h: 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. When DRDY bit turn to “1”, ODDRDY pin is “L”. When DRDY bit
turn to “0”, ODDRDY pin is “H”
016009278-E-00
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2016/7