AMIS-30621 Datasheet, PDF (27/59 Pages) AMI SEMICONDUCTOR – LIN Microstepping Motordriver

AMIS−30621
Table 19. RAM REGISTERS
Register
Length
Mnemonic (bit)
Related commands
Comment
Reset State
Actual position
ActPos
Last programmed
Position
Pos/
TagPos
16
16/11
GetActualPos
GetFullStatus
GotoSecurePos
ResetPosition
16−bit signed
GetFullStatus
GotoSecurePos
ResetPosition
SetPosition
SetPositionShort
16−bit signed or
11−bit signed for half stepping
(see Positioning)
Note 25
Acceleration
AccShape
1 GetFullStatus
‘0’ ⇒ normal acceleration from Vmin to Vmax
shape
ResetToDefault ^{‘1’ ⇒ motion at Vmin without acceleration}
‘0’
SetMotorParam
Coil peak current
Irun
4 GetFullStatus
Operating current
ResetToDefault ^{See look−up table Irun}
SetMotorParam
Coil hold current
Ihold
4 GetFullStatus
Standstill current
ResetToDefault ^{See look−up table Ihold}
SetMotorParam
Minimum Velocity
Vmin
4 GetFullStatus
See Section Minimum Velocity
ResetToDefault ^{See look−up table Vmin}
SetMotorParam
Maximum Velocity
Vmax
Shaft
Shaft
4 GetFullStatus
See Section Maximum Velocity
ResetToDefault ^{See look−up table Vmax}
SetMotorParam
1 GetFullStatus
Direction of movement
ResetToDefault
SetMotorParam
From OTP
memory
Acceleration/
deceleration
Acc
4 GetFullStatus
See Section Acceleration
ResetToDefault ^{See look−up table Acc}
SetMotorParam
Secure Position
SecPos
11 GetFullStatus
ResetToDefault
SetMotorParam
Target position when LIN connection fails; 11
MSB’s of 16−bit position (LSB’s fixed to ‘0’)
Stepping mode
StepMode
2 GetFullStatus
See Section Stepping Modes
ResetToDefault ^{See look−up table StepMode}
SetMotorParam
SetPositionShort
25. A ResetToDefault command will act as a reset of the RAM content, except for ActPos and TagPos registers that are not modified.
Therefore, the application should not send a ResetToDefault during a motion, to avoid any unwanted change of parameter.
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