[AK09915]
11.3.9.CNTL2: Control 2
Register
name
Addr.
D7
D6
D5
D4
D3
D2
D1
D0
Read/Write register
31h
CNTL2
Reset
FIFO
0
SDR
0
0
0
MODE4 MODE3 MODE2 MODE1 MODE0
0
0
0
0
0
MODE[4:0] bits: Operation mode setting
“00000”: Power-down mode
“00001”: Single measurement mode
“00010”: Continuous measurement mode 1
“00100”: Continuous measurement mode 2
“00110”: Continuous measurement mode 3
“01000”: Continuous measurement mode 4
“01010”: Continuous measurement mode 5
“01100”: Continuous measurement mode 6
“10000”: Self-test mode
When each mode is set, AK09915 transits to the set mode. Refer to 9.3 for detailed information. If other
value is set, AK09915 transits to power-down mode automatically.
SDR bit: Sensor drive setting
“0”: Low power drive
“1”: Low noise drive
Default SDR bit is Low power drive (SDR bit = “0”). By writing “1” to SDR bit, AK09915 is switched from
Low power drive to Low noise drive.
FIFO bit: FIFO setting
“0”: disable
“1”: enable
By writing “1” to FIFO bit, FIFO function is enabled. By writing “0”, FIFO function is disabled and the
buffer is cleared at the same time. FIFO function is available only in Continuous measurement mode. It is
prohibited to enable it other than Continuous measurement mode
11.3.10. CNTL3: Control 3
Register
name
Addr.
D7
D6
D5
D4
D3
D2
D1
D0
Read/Write register
32h
CNTL3
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SRST
0
SRST bit: Soft reset
“0”: Normal
“1”: Reset
When “1” is set, all registers are initialized. After reset, SRST bit turns to “0” automatically.
015006484-E-02
2016/7
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AKM [ ASAHI KASEI MICROSYSTEMS ]
