MLX90363 Datasheet, PDF (19/57 Pages) Melexis Microelectronic Systems – Triaxis® Magnetometer IC With High Speed Serial Interface

MLX90363
Triaxis® Magnetometer IC
With High Speed Serial Interface
The sensitivity in the X and Y direction is always higher than the Z direction by the IMC Gain factor (see
parameter GainIMC in section 12). Melexis therefore recommends multiplying the Z component by the
GainIMC factor inside the master in order to use the MLX90363 as a 3D magnetometer.
14.5. Trigger Mode 1
The master sends a GET1 command to initiate the magnetic field acquisition and post-processing. It waits
tSSREFE, issues the next GET1 and receives at the same time the regular message resulting from the
previous GET.
The field sensing, acquisition and post-processing is starting on /SS rising edge events.
Although GET1 commands are preferably followed by another GET1 command or a NOP command, any
other commands are accepted by the slave.
FW background ASP DSP SPI
ASP DSP SPI
ASP DSP SPI
SPI
SPI HW
Get
Get
tSSREFE
Roll=0
Get
Roll=1
NOP
X
Roll=2
Figure 4 – Trigger mode 1
Message Sequence Chart
Single Slave - Mode 1
Master
Slave1
GET1 ( )
NTT ()
Loop
GET1 ( )
Regular Packet ()
NOP ( )
Regular Packet ()
Figure 5 – Trigger Mode 1 Message Sequence Chart
3901090363
Rev. 005
Page 19 of 57
Data Sheet
Jul/13