AMIS-30623 Datasheet, PDF (29/65 Pages) AMI SEMICONDUCTOR – LIN Microstepping Motordriver

AMIS-30623
14.2.9. RAM Registers
Table 19: RAM Registers
Register
Mnemonic
Length
(bit)
Related Commands
Comment
GetActualPos
Actual position
ActPos
16
GetFullStatus
GotoSecurePos
16-bit signed
ResetPosition
Last programmed
position
Pos/
TagPos
16/11
GetFullStatus
GotoSecurePos
ResetPosition
SetPosition
SetPositionShort
16-bit signed or
11-bit signed for half stepping
(see Positioning)
Acceleration shape
AccShape
GetFullStatus
1 ResetToDefault²
SetMotorParam
‘0’ ⇒ normal acceleration from Vmin to Vmax
‘1’ ⇒ motion at Vmin without acceleration
Coil peak current
Irun
GetFullStatus
4 ResetToDefault²
SetMotorParam
Operating current
See look-up table Irun
Coil hold current
Ihold
GetFullStatus
4 ResetToDefault²
SetMotorParam
Standstill current
See look-up table Ihold
Minimum Velocity
Vmin
GetFullStatus
4 ResetToDefault²
SetMotorParam
See Section 13.3 Minimum Velocity
See look-up table Vmin
Maximum Velocity
Vmax
GetFullStatus
4 ResetToDefault²
SetMotorParam
See Section 13.2 Maximum Velocity
See look-up table Vmax
Shaft
Shaft
GetFullStatus
1 ResetToDefault²
SetMotorParam
Direction of movement
for positive velocity
Acceleration/
deceleration
Acc
GetFullStatus
4 ResetToDefault²
SetMotorParam
See Section 13.4 Acceleration
See look-up table Acc
Secure Position
SecPos
GetFullStatus
11 ResetToDefault²
SetMotorParam
Target position when LIN connection fails; 11
MSBs of 16-bit position (LSBs fixed to ‘0’)
Stepping mode
StepMode
2
GetFullStatus
SetStallParam
See Section 13.1 Stepping Modes
See look-up table StepMode
Stall detection absolute
threshold
AbsThr
4
GetFullStatus
SetStallParam
Stall detection delta
threshold
DelThr
4
GetFullStatus
SetStallParam
Sleep Enable
SleepEn
SetOTPParam
Enables entering sleep mode after LIN lost See
also 16.8 LIN lost behavior
Fail Safe
FailSafe
SetOTPParam
Triggers autonomous motion after LIN lost at
POR See also 16.8 LIN lost behavior
Stall detection delay
FS2StallEn
3
GetFullStatus
SetStallParam
Delays the stall detection after acceleration
Stall detection sampling MinSamples
3
GetFullStatus
SetStallParam
PWM Jitter
PWMJEn
1
GetFullStatus
SetStallParam
‘1’ means jitter is added
100% duty cycle Stall
Disable
DC100SDis
1
GetFullStatus
SetStallParam
‘1’ means stall detection is disabled in case
PWM regulator runs at δ = 100%
PWM frequency
PWMFreq
1
GetFullStatus
SetMotorParam
Note 1: 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.
Reset State
Note 1
‘0’
From OTP
memory
‘000’
‘000’
‘0’
‘0’
‘0’
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