Output Data Scaling - Aceinna IMU383 Series User Manual

IMU383 Series User's Manual
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Extended Burst-mode begins when the master requests a read of burst-mode extended data-packet
by sending the 16-bit word 0x3F00. Ten additional 16-bit SPI cycles complete the read (one for
each word in the extended data-packet). Figure 8 illustrates the burst-mode sequence. Note: if
the incorrect number of SPI cycles follow the burst-mode command, the SPI transfer will either
complete early or remain in burst-mode; subsequent reads/writes will be out of sync with the SPI
transfer cycle of the DMU383ZA; the 1 kHz sync signal should be accurate to +/-0.1%, or it will
not be recognized as a valid synchronization signal.
nSS
CLK
MOSI
MISO
Operational notes:
Care must be taken when switching between data-packets as values returned during
1.
the first burst-read of a new packet are invalid. A single burst read-cycle is needed to
populate the internal burst-mode register, Then, subsequent reads from the same
packet type contain valid information
When combining polled and burst reads, use only single-register polled-reads.
2.

Output Data Scaling

Table 9 lists each parameter and its conversion factor. Note: the scale-factors described below
only applies to the values in and standard and extended burst-mode packets.
Name
X_RATE
Y_RATE
Z_RATE
X_ ACCEL
Y_ ACCEL
Z_ACCEL
BOARD_TEMP
Doc# 7430-1398-01
0x3F00 0x0000 0x0000
N/A
STATUS X_RATE
Figure 8 Extended Burst Mode Timing
.
Table 9 IMU383 Output Data Scaling
X, Y, Z-axis rate-sensor information, twos complement format,
conversion factor: 200 LSB/[ °/sec ] (default); changes with selected
dynamic range ()
X, Y, Z-axis accelerometer information, twos complement format,
conversion factor: 4000 LSB/g (default) ; changes with selected dynamic
range (Table 16)
System temperature information, twos complement format, conversion:
Tout [°C ] = Vout · 0.07311 [°C/LSB ] + 31.0 [°C ]
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0x0000
TIME
STAMP2
Function
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