[AK8975/C]
8.3.7. RSV: Reserved
Addr Register name
Read-only register
D7
D6
D5
D4
D3
D2
D1
D0
0BH
RSV
Reset
-
0
-
0
-
0
-
0
-
0
-
0
-
0
-
0
RSV register is reserved. Do not use this register.
8.3.8. ASTC: Self Test Control
Addr Register name
D7
D6
D5
D4
D3
D2
D1
D0
Write/read register
0CH
ASTC
Reset
-
0
SELF
0
-
0
-
0
-
0
-
0
-
0
-
0
SELF: Self test control
"0":
"1":
Normal
Generate magnetic field for self-test
Do not write “1” to any bit other than SELF bit in ASTC register. If “1” is written to any bit other than SELF
bit, normal measurement can not be done.
8.3.9. TS1, TS2: Test 1, 2
Addr Register name
D7
D6
D5
D4
D3
D2
D1
D0
Write/read register
0DH
0EH
TS1
TS2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Reset
0
0
0
0
0
0
0
0
TS1 and TS2 registers are test registers for shipment test. Do not use these registers.
I2CDIS: I2C Disable
8.3.10.
Addr Register name
Write/read register
0FH I2CDIS
Reset
D7
D6
D5
D4
D3
D2
D1
D0
-
0
-
0
-
0
-
0
-
0
-
0
-
0
I2CDIS
0
This register disables I2C bus interface. I2C bus interface is enabled in default. To disable I2C bus interface,
write “00011011” to I2CDIS register. Then I2CDIS bit turns to “1” and I2C bus interface is disabled.
Once I2CDIS is turned to “1” and I2C bus interface is disabled, re-setting I2CDIST to “0” is prohibited. To
enable I2C bus interface, reset AK8975/C by turning VDD or VID to OFF (0V) once.
MS1187-E-02
- 27 -
2010/05
AKM [ ASAHI KASEI MICROSYSTEMS ]
