AMIS-30623 Datasheet, PDF (62/67 Pages) AMI SEMICONDUCTOR – LIN Microstepping Motordriver

AMIS-30623 LIN Microstepping Motordriver
Data Sheet
TestBemf
This command is provided to the circuit by the LIN Master in order to output the Bemf integrator output
To the SWI output of the chip. Once activated, it can be stopped only after POR. During the Bemf observation, reading of the SWI
state is internally forbidden.
TestBemf corresponds to the following LIN writing frames (type #1).
Byte
0
1
2
Where:
(*)
Broad:
Content
Identifier
Data 1
Data 2
TestBemf Writing Frame
Structure
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2
*
*
0
ID4 ID3 ID2
1
CMD[6:0] = 0x1F
Broad
AD[6:0]
Bit 1
ID1
Bit 0
ID0
according to parity computation
If broad = ‘0’ all the stepper motors connected to the LIN bus will be affected.
AMI Semiconductor – June 2006, Rev 3.0
62
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