MA120GQ-Z Datasheet, PDF (3/14 Pages) MPS Industries, Inc. – Angular Sensor for 3-Phase Brushless Motor Commutation

MA120
Angular Sensor for 3-Phase Brushless Motor
Commutation
2. Timing of the Serial Interface
The data link is a 4-wire serial bus, complying to the Serial Peripheral Interface (SPI) usual convention shown in Table
3 and Table 4. The MagAlpha sensor operates as slave. During one transmission a 16 bit word can be simultaneously
sent to the sensor (MOSI pin) and received from the sensor (MISO pin).See section 10 “Output Signals” for details.
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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