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.
TestBemfcorresponds to the following LIN writing frames (type #1).
TestBemf Writing Frame
Byte
Content
Structure
Bit 7
*
Bit 6
*
Bit 5
0
Bit 4
ID4
Bit 3
ID3
Bit 2
ID2
Bit 1
ID1
Bit 0
ID0
0
1
Identifier
Data 1
1
CMD[6:0] = 0x1F
AD[6:0]
Broad
2
Data 2
Where:
(*)
Broad:
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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