M-G362 Datasheet, PDF (22/69 Pages) Epson Company – IMU (Inertial Measurement Unit)

Data Ready signal.
NOTE: When using this function, set the Data Output Rate (DOUT_RATE) to 2,000 sps and Moving
Average Filter (FILTER_SEL) to TAP=2 or higher.
• SMPL_CTRL[0x04(W1)],bit[15:8], DOUT_RATE = 0x01
• FILTER_CTRL[0x06(W1)],bit[4:0], FILTER_SEL = 00001
The above settings are recommended and are the basis for the timings specified in Table 5.1.
The External Trigger Input Timing requirements and timing diagrams are shown in Table 5.1, Figure 5.8,
and Figure 5.9.
Table 5.1 External Trigger Input Timing Requirements
Parameter
Description
Min
Max
Unit
t_ETW
External Trigger Input Width
100
-
nSec
t_ETC
External Trigger Input Cycle
1
-
mSec
t_ETA2T
Time from ADC's completion to External Trigger Input
(Timing Jitter of External Trigger Input)
0
500
μs
t_ETD1*1
Delay time from External Trigger Input to DRDY asserted
-
300
μs
*1) This does not include group delay of the internal filter.
Data update rate: 2kSps
Average Filter TAP: N=2
500us
250us
ADC
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Filtering
Decimation &
Temp. Correction
EXT Trigger Input
t_ETA2T
t_ETD1(< 300us)
t_ETC
t_ETW
DRDY signal
UART_I/F
(Host reads data.)
1'
2'
3'
X(1')={X(3)+X(4)}/2
X(2')={X(9)+X(10)}/2
X(3')={X(15)+X(16)}/2
Figure 5.8 External Trigger Input (UART Auto Mode)
18
Seiko Epson Corporation
M-G362PDC1 Data Sheet
Rev.20131217