mlx90316 Melexis Company, mlx90316 Datasheet - Page 30

• Manufacturer Part Number: mlx90316
• Description: Rotary Position Sensor Ic
• Manufacturer: Melexis Company

16.10.4. Data Structure
The DATA16 could be a valid angle, or an error condition. The two meanings are distinguished by the
LSB.
DATA16: Angle A[13:0] with (Angle Span)/2
DATA16: Error
16.10.5. Angle Calculation
All communication timing is independent (asynchronous) of the angle data processing. The angle is
calculated continuously by the Slave:
The last angle calculated is hold to be read by the Master at any time. Only valid angles are transferred by
the Slave, because any internal failure of the Slave will lead to a soft reset.
16.10.6. Error Handling
In case of any errors listed in section 16.10.4, the Serial protocol will be initialized and the error condition
can be read by the master. The slave will perform a soft reset once the error frame is sent.
In case of any other errors (ROM CRC error, EEPROM CRC error, RAM check error, intelligent watchdog
error…) the Slave’s serial protocol is not initialized. The MOSI/MISO pin will stay Hi-impedant (no error
frames are sent).
3901090316
Rev. 003
•
•
MSB
MSB
A13
E15
BIT
E0
E1
E2
E3
E4
E5
E6
E7
E8
E9
E10
E11
E12
E13
E14
E15
Slow Mode: every 1.5 ms at most.
Fast Mode: every 350 μs at most.
A12
E14
NAME
0
1
F_ADCMONITOR
F_ADCSATURA
F_RGTOOLOW
F_MAGTOOLOW
F_MAGTOOHIGH
F_RGTOOHIGH
-
-
-
F_DACMONITOR
-
F_FGCLAMP
F_ROCLAMP
F_MT7V
Most Significant Byte
A11
E13
Most Significant Byte
A10
E12
E11
A9
A8
E10
ADC Failure
ADC Saturation (Electrical failure or field too strong)
Analog Gain Below Trimmed Threshold
Magnetic Field Too Weak
Magnetic Field Too Strong
Analog Gain Above Trimmed Threshold
Never occurring in serial protocol
Analog Chain Rough Offset Compensation : Clipping
Device Supply V
Never occurring in serial protocol
(Likely reason : field too weak)
(Likely reason : field too strong)
A7
14
E9
LSB
Page 30 of 41
A6
LSB
E8
MSB
DD
A5
MSB
E7
Greater than 7V
A4
E6
Rotary Position Sensor IC
Less Significant Byte
Less Significant Byte
A3
E5
A2
E4
MLX90316
A1
E3
A0
E2
E1
0
Data Sheet
LSB
LSB
E0
1
April 07