AMIS-30621 Datasheet, PDF (20/43 Pages) AMI SEMICONDUCTOR – LIN Microstepping Motordriver

AMIS-30621 LIN Microstepping Motordriver
Data Sheet
9.2.2.11 Application Commands
The LIN Master will have to use commands to manage the
different application tasks the AMIS-30621 can feature. The
commands summary is given in the table below.
Command Mnemonic
GetActualPos
GetFullStatus
GetOTPparam
GetStatus
GotoSecurePosition
HardStop
ResetPosition
ResetToDefault
RunInit
SetMotorParam
SetOTPparam
SetPosition
SetPositionShort (1 motor)
SetPositionShort (2 motors)
SetPositionShort (4 motors)
Sleep
SoftStop
Feature
Returns the actual position of the motor
Returns a complete status of the circuit
Returns the OTP memory content
Returns a short status of the circuit
Drives the motor to its secure position
Immediate motor stop
Actual position becomes the zero position
RAM content reset
Initialization sequence
Programs the motion parameters and values for the current in the
motor’s coils
Programs (and zaps) a selected byte of the OTP memory
Drives the motor to a given position
Drives the motor to a given position (half stepping mode only)
Drives 2 motors to 2 given positions (half stepping mode only)
Drives 4 motors to 4 given positions (half stepping mode only)
Drives circuit into sleep mode
Motor stopping with a deceleration phase
These commands are described hereafter, with their
corresponding LIN frames. One should also refer to §
9.2.4.6 for more details on LIN frames, particularly for what
concerns dynamic assignment of identifiers. A gray scale
coding is used to distinguish between master and slave
parts within the frames and to highlight dynamic identifiers.
An example is shown below.
Usually, the AMIS-30621 makes use of dynamic identifiers
for general-purpose 2, 4 or 8 bytes writing frames. If
dynamic identifiers are used for other purpose, this is
acknowledged.
Some frames implement a Broad bit that allows to address
a command to all the AMIS-30621 circuits connected to the
same LIN bus. Broad is active when at ‘0’, in which case the
physical address provided in the frame is thus not taken into
account by the slave nodes.
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