AK8973 Datasheet, PDF (18/31 Pages) Asahi Kasei Microsystems – 3-axis Electronic Compass

ASAHI KASEI
[AK8973]
8. Registers
8.1. Description of Registers
AK8973 has registers of 13 addresses as indicated in Table 1. Every address consists of 8 bits data. Data is
transferred to or received from the external CPU via the serial interface described previously.
Name
ST
TMPS
H1X
H1Y
H1Z
MS1
HXDA
HYDA
HZDA
HXGA
HYGA
HZGA
TS1
Address
C0H
C1H
C2H
C3H
C4H
E0H
E1H
E2H
E3H
E4H
E5H
E6H
5DH
READ/
WRITE
Description
READ Status register
READ
READ
Temperature sensor data
register
Magnetic sensor data register
READ/ Mode setting register
WRITE
READ/
WRITE
READ/
WRITE
READ/
WRITE
READ/
WRITE
READ/
WRITE
READ/
WRITE
READ/
WRITE
Magnetic sensor X-axis DAC
setting register
Magnetic sensor Y-axis DAC
setting register
Magnetic sensor Z-axis DAC
setting register
Magnetic sensor X-axis gain
setting register
Magnetic sensor Y-axis gain
setting register
Magnetic sensor Z-axis gain
setting register
Test mode setting register
Table 1
Explanation
Interrupt
EEPROM write enabled/disabled
Temperature sensor data read
X-axis data read
Y-axis data read
Z-axis data read
Operation mode setting
EEPROM write enable/disable
setting
X-axis offset DAC setting value
Y-axis offset DAC setting value
Z-axis offset DAC setting value
X-axis AMP gain setting value
Y-axis AMP gain setting value
Z-axis AMP gain setting value
Not to be used by the user.
Used for testing before shipment
MS0561-E-01 <Preliminary>
- 18 -
2007/01