MA300GQ-P Datasheet, PDF (3/18 Pages) MPS Industries, Inc. – Angular Sensor for 3-Phase Brushless Motor Commutation and Position Control with Side-Shaft Positioning Capability

MA300
Angular Sensor for 3-Phase Brushless Motor
Commutation and Position Control with Side-Shaft
Positioning Capability
2. Timing of the Serial Interface
The data link is a 4-wire serial bus, complying to the Serial Peripheral Interface (SPI) usual convention (see
Table 3 and Table 4).The MagAlpha sensor operates as slave. During one transmission, a 16-bit word can
be sent simultaneously to the sensor MOSI and received from the sensor MISO (see Figure 2). Note that it is
possible to receive 24 bits of data (16 bits for the angle and 8 bits for a time index). For additional details,
refer to the “Output Signals” section.
TABLE 3. SPI SPECIFICATION
SCLK Idle State
SCLK Readout Edge
CS Idle State
Data Order
Figure 2: SPI Timing Diagram
High
Rising
High
MSB First
TABLE 5. SPI TIMING
Parameter
tidle
tcsL
tsclk
tsclkL
tsclkH
tcsH
tMOSI
tMISO
Description
Time between two subsequent transmissions.
Time between CS falling edge and SCLK falling edge.
SCLK period.
Low level of SCLK signal.
High level of SCLK signal.
Time between SCLK rising edge and CS rising edge.
Data input valid to SCLK reading edge.
SCLK setting edge to data output valid.
TABLE 4. SPI STANDARD
CPOL
1
CPHA
1
MODE
3
DORD
0
Min
Max
Unit
20
ns
25
ns
40
ns
20
ns
20
ns
25
ns
15
ns
15
ns
Monolithic Power Systems, Inc. | Gland, Switzerland | Tel: [phone] | [e-mail] | www.sensimatech.com
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Reserved. MA700 Rev 1.0 September 2014
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