MLX90363 Datasheet, PDF (35/57 Pages) Melexis Microelectronic Systems – Triaxis® Magnetometer IC With High Speed Serial Interface

MLX90363
Triaxis® Magnetometer IC
With High Speed Serial Interface
14.18. Reboot
Reboot is a valid command in the following three cases.
1. After an EEPROM write
2. In fail-safe mode
3. In standby mode
In normal mode, Reboot reports wrong opcode.
Reboot causes a system reset identical to a true power-on reset. Start-up timings and sequences are
applicable for the reboot message.
Reboot, after EEPROM programming
It is meant to force the FW to refresh the EEPROM cache and IO space after a series of EEPROM write
commands. It forces the FW to take into account all the changes (modes enabling, disabling...) including
those that are not cached.
Reboot, in fail-safe mode
ECU can issue a reboot message to exit the fail-safe mode before the watchdog time-out, for a fast
recovery.
#7 6 5 4 3 2 1 0 # 7 6 5 4 3 2 10
1
0
3
2
4
4
7
CRC
611101111
Table 43 – Reboot (Opcode = 47)
14.19. Standby
Standby sets the sensor in Standby mode: the digital clock is stopped and some analog blocks are
switched off. The SCI clock remains active, allowing the sensor to be responsive to SCI messages.
The first SCI message received while in Standby wakes up the sensor. The standby mode is precisely
exited on the SS rising edge. The first message following a Standby message is normally interpreted by
the sensor. It can be NOP, a GET or anything else.
#7 6 5 4 3 2 1 0 # 7 6 5 4 3 2 10
1
0
3
2
4
4
7
CRC
611110001
Table 44 – Standby (Opcode = 49)
The sensor answer to Standby is StandbyAck (opcode 50).
After resuming, the (E1, E0) error bits of the 6 following GET messages shall be ignored.
3901090363
Rev. 005
Page 35 of 57
Data Sheet
Jul/13