Data Sheet

[AK9753]
017005237-E-00 2017/04
- 18 -
11.4.5. Continuous Mode 0 (EMODE [2:0] = “100”)
When Continuous Mode 0 (EMODE [2:0] = “100”) is selected the measurement is automatically repeated
at the cycle which is determined by the digital filter cut-off frequency (EFC [2:0], Table 16.2).
When a measurement have been done, the measurement data is stored to the measurement register
(IR1L to TMPH), and new measurement is started. * Please refer to Table16.1 for first measurement
time.
This Mode is terminated by setting the AK9753 to Stand-by Mode (EMODE [2:0] = “000”).
When EMODE [2:0] is re-written during a measurement, the measurement is interrupted. Then the last
data is retained to the register.
When Continuous Mode 0 is selected, a register write command should be executed. If register write
command should be executed during a measurement, a right measurement data cannot be gotten.
EMODE[2:0]
000
Analog circuit
Power down
Change the register
100
Power on
000
4.5ms
Ready
Measurement
(Depended on EFC [2:0])
Wait
Power down
Digital calculation
Wait
When a command enters
measurement is interrupted.
Last data is retained to the register.
Measurement
Measurement
Measurement
Measurement
Change the register
Figure 11.4. Continuous Mode 0
11.4.6. Continuous Mode 1,2,3 (EMODE [2:0] = “101”, “110”, “111”)
When Continuous Mode 1, 2, and 3 (EMODE [2:0] = “101”, “110”, “111”) are selected, a measurement
and a wait are automatically repeated at the cycle according to the selected measurement Mode
(EMODE [2:0]) and the digital filter cut-off frequency (EFC [2:0]).
A wait time length depends on the measurement Mode. When a measurement has been done, the
measurement data is stored to the measurement register (IR1L to TMPH).
This Mode is terminated by setting the AK9753 to Stand-by Mode (EMODE [2:0] = “000”).
When EMODE [2:0] is re-written during a measurement, the measurement is interrupted. Then the last
data is retained to the register.
When Continuous Mode 1, 2, and 3 is selected, a register write command should be executed. If a
register write command should be executed during a measurement, a right measurement data cannot be
gotten. * Please refer to Table16.1 for first measurement time.
EMODE [2:0]
000
Analog circuit
Power down
Change the register
101 or 110 or 111
Power down
Power on
000
Power on
4.5ms
4.5ms
Ready
Measurement
Measurement
Wait
Power down
Digital Calculation
Wait
Wait
Measurement
Power down
Power on
4.5ms
Wait
Ready
Ready
Measurement is interrupted.
Register retains the last data.
Change the register
Figure 11.5. Continuous Mode 1, 2, and 3