參數(shù)資料
型號(hào): MLX90316EDC-SPI
廠商: Electronic Theatre Controls, Inc.
英文描述: Rotary Position Sensor IC
中文描述: 旋轉(zhuǎn)位置傳感器IC
文件頁數(shù): 30/41頁
文件大小: 688K
代理商: MLX90316EDC-SPI
MLX90316
Rotary Position Sensor IC
3901090316
Rev. 003
Page 30 of 41
Data Sheet
April 07
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
14
Most Significant Byte
MSB
LSB
A13
A12 A11 A10 A9
A8
A7
A6
DATA16: Error
Most Significant Byte
MSB
LSB
E15
E14 E13 E12 E11 E10
E9
E8
BIT
NAME
E0
0
E1
1
E2
F_ADCMONITOR
ADC Failure
E3
F_ADCSATURA
ADC Saturation (Electrical failure or field too strong)
E4
F_RGTOOLOW
Analog Gain Below Trimmed Threshold
(Likely reason : field too weak)
E5
F_MAGTOOLOW
Magnetic Field Too Weak
E6
F_MAGTOOHIGH
Magnetic Field Too Strong
E7
F_RGTOOHIGH
(Likely reason : field too strong)
E8
F_FGCLAMP
Never occurring in serial protocol
E9
F_ROCLAMP
Analog Chain Rough Offset Compensation : Clipping
E10
F_MT7V
Device Supply V
DD
Greater than 7V
E11
-
E12
-
E13
-
E14
F_DACMONITOR
Never occurring in serial protocol
E15
-
16.10.5. Angle Calculation
All communication timing is independent (asynchronous) of the angle data processing. The angle is
calculated continuously by the Slave:
Slow Mode: every 1.5 ms at most.
Fast Mode: every 350
μ
s at most.
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).
Less Significant Byte
A3
A2
MSB
A5
LSB
1
A4
A1
A0
0
Less Significant Byte
E5
E4
MSB
E7
LSB
E0
E6
E3 E2 E1
Analog Gain Above Trimmed Threshold
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