AK8996 Datasheet, PDF (70/74 Pages) Asahi Kasei Microsystems – Pressure Sensor Interface IC

[AK8996/W]
b) Adjustment mode 2 (Register name: CM2)
This register is used to adjust the AK8996 and pressure sensor's offset, span, offset temperature
drift and sensitivity temperature drift.
Address: 01 hex D[5:0]=INSW[1:0], OTSW[0], STSW[0], 2ND[1:0]
(This is not a nonvolatile EEPROM, but a volatile register.)
D[7:0] Symbol
Mode setup
Description
D[7:6]
Reserved
D[5:4] INSW[1:0] Input mode control Controls the input mode
00 NRM6
Normal operation Enables the sensor input (Default)
01 AIN0
Reference voltage Internally generated AK8996 reference
mode
voltage fed to the input
10
AIN80
80mV voltage mode
Internally generated AK8996 80mV voltage
fed to the input
11
Reserved
D[3]
OTSW[0]
Temperature offset Controls offset temperature drift adjustment
circuit control
circuit
0 NRM5
Enable
Enables temperature offset circuit (Default)
1 ASTOF
Disable
Disables temperature offset circuit
D[2] STSW[0] ST circuit control Controls the ST circuit
0 NRM4
Enable
Enables the ST circuit (Default)
1 ASVOF
Disable
Disables the ST circuit
Secondary
D[1:0] 2ND[1:0]
characteristic
measurement
00 NRM3
Normal operation (Default)
01
A2ND
Secondary
Outputs secondary characteristic (primary
characteristic output characteristic off)
10
A1ST
Primary
Outputs primary characteristic (secondary
characteristic output characteristic off)
11
Reserved
MS1055-E-02
70
2011/12