AK8963C Datasheet, PDF (17/38 Pages) Asahi Kasei Microsystems – 3-axis Electronic Compass

[AK8963]
6.4.3.4. Data Skip
When Nth data was not read before (N+1)th measurement ends, Data Ready remains until data is read. In this
case, a set of measurement data is skipped so that DOR bit turnes to “1”. (Refer to Figure 6.7)
When data reading started after Nth measurement ended and did not finish reading before (N+1)th
measurement ended, Nth measurement data is protected to keep correct data. In this case, a set of measurement
data is skipped and not stored so that DOR bit turnes to “1”. (Refer to Figure 6.8)
In both case, DOR bit turnes to “0” at the next start of data reading.
(N-1)th Nth
(N+1)th
PD Measurement
PD
Measurement
PD
Measurement Data Register
(N-1)th
Nth
(N+1)
DRDY
DOR
Data read
(N-1)th Nth
PD Measurement
ST1 Data(N+1) ST2
Figure 6.7 Data Skip: When data is not read
(N+1)th
(N+2)th
PD
Measurement
PD
Measurement
PD
Measurement Data Register
(N-1)th
Nth
Data register is protedted
because data is being read
(N+2)
DRDY
Not data ready
because data is not updated
DOR
(N+1)th data is skipped
Data read
ST1 DataN
ST2
ST1 Data(N+2)
Figure 6.8 Data Skip: When data read has not been finished before the next measurement ends
6.4.3.5. End Operation
Set power-down mode (MODE[3:0]=“0000”) to end continuous measurement mode.
MS1356-E-02
- 17 -
2013/10