mlx90333 Melexis Company, mlx90333 Datasheet - Page 33

• Manufacturer Part Number: mlx90333
• Description: Triaxis? 3d-joystick Position Sensor
• Manufacturer: Melexis Company

16.9. Slave Reset
On internal soft failures the Slave resets after 1 second or after an (error) frame is sent. On internal hard
failures the Slave resets itself. In that case, the Serial Protocol will not come up. The serial protocol link is
enabled only after the completion of the first synchronization (the Master deactivates /SS for at least t5).
16.10. Frame Layer
16.10.1. Frame Type Selection
See the programmable parameter XYZ in section 14.2.3 to select between the Alpha, Beta Frame and the
X, Y, Z Frame.
16.10.2. Data Frame Structure
The Figure 17 gives the timing diagram for the SPI Frame. The latch point for the angle measurement is
at the last clock before the first data frame byte.
A data frame consists of:
16.10.3. Timing
There are no timing limits for frames: a frame transmission could be initiated at any time. There is no inter-
frame time defined.
3901090333
Rev. 001
SCLK
MOSI
MISO
XYZ
/SS
2 data bytes (LSByte first)
2 data bytes (LSByte first)
2 data bytes (LSByte first)
0
1
Data Frame
1 SUM byte
1 start byte
F
F
F
F
Figure 17 - Timing Diagram for the SPI Frame
Latch point
F
F
D
A
Alpha
X
F
F
T
A
F
F
D
A
Beta
Y
8 LSB of the sum of the transmitted bytes
F
F
T
A
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Tria ⊗ is ™ 3D-Joystick Position Sensor
Error Code
XYZ = 0
F
F
D
A
Error
Alpha
Beta
Z
F
F
T
A
F
F
U
M
S
FFh
XYZ = 1
X
Y
Z
F
F
F
F
MLX90333
F
F
D
A
F
F
T
A
Data Sheet
Jan 08