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AMIS-30621 Datasheet(PDF) 21 Page - AMI SEMICONDUCTOR

Part # AMIS-30621
Description  LIN Microstepping Motordriver
PDF  43 Pages
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Manufacturer  AMI [AMI SEMICONDUCTOR]
Direct Link  http://www.amis.com
Logo AMI - AMI SEMICONDUCTOR

AMIS-30621 Datasheet(HTML) 21 Page - AMI SEMICONDUCTOR

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AMI Semiconductor - Rev. 1.4
21
www.amis.com
GetActualPos
This command is provided to the circuit by the LIN Master
to get the actual position of the Stepper-motor. This
position (ActPos[15:0]) is returned in signed two’s
complement 16-bit format. One should note that according
to the programmed stepping mode, the LSBs of
ActPos[15:0]
may have no meaning and should be
assumed to be at ‘0’, as described in § 8.5.
GetActualPos
provides also a quick status of the circuit
and of the Stepper-motor, identical to that obtained by
command GetStatus (see further).
Note
A GetActualPosition command will not attempt to
reset any flag.
GetActualPos
corresponds to the following LIN reading
frames.
*) according to parity computation
ID[5:0]
:
Dynamically allocated direct identifier. There
should be as many dedicated identifiers to
the GetActualPos command as there are
stepper motors connected to the LIN bus.
2) One preparing frame prior 4 data bytes in-frame
response with 0x3D indirect ID.
*) according to parity computation
1) 4 data bytes in-frame response with direct ID (type #5).
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
**
1
0
ID3
ID2
ID1
ID0
ESW
AD[6:0]
ActPos[15:8]
ActPos[7:0]
VddReset
StepLoss
ElDef
UV2
TSD
TW
Tinfo[1:0]
Identifier
Data1
Data2
Data3
Data4
Preparing Frame (type #7 or #8)
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
**
0
ID4
ID3
ID2
ID1
ID0
1
CMD[6:0] = 0x00
1
AD[6:0]
In-frame Response (type #6)
01
1
1
1
1
0
1
ESW
AD[6:0]
ActPos[15:8]
ActPos[7:0]
VddReset
StepLoss
ElDef
UV2
TSD
TW
Tinfo[1:0]
0xFF
0xFF
0xFF
0xFF
Identifier
Data1
Data2
Identifier
Data1
Data2
Data3
Data4
Data5
Data6
Data7
Data8
AMIS-30621 LIN Microstepping Motordriver
Data Sheet



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