AMIS-30623 Datasheet, PDF (31/67 Pages) AMI SEMICONDUCTOR – LIN Microstepping Motordriver

AMIS-30623 LIN Microstepping Motordriver
Data Sheet
15.2.9. RAM Registers
Table 19: RAM Registers
Register
Actual position
Last programmed
position
Acceleration shape
Coil peak current
Coil hold current
Minimum Velocity
Maximum Velocity
Shaft
Acceleration/
deceleration
Secure Position
Stepping mode
Stall detection absolute
threshold
Stall detection delta
threshold
Sleep Enable
Mnemonic
Length
(bit)
ActPos
16
Pos/
TagPos
16/11
AccShape
1
Irun
4
Ihold
4
Vmin
4
Vmax
4
Shaft
1
Acc
4
SecPos
11
StepMode
2
AbsThr
4
DelThr
4
SleepEn
Related commands
GetActualPos
GetFullStatus
GotoSecurePos
ResetPosition
GetFullStatus
GotoSecurePos
ResetPosition
SetPosition
SetPositionShort
GetFullStatus
ResetToDefault²
SetMotorParam
GetFullStatus
ResetToDefault²
SetMotorParam
GetFullStatus
ResetToDefault²
SetMotorParam
GetFullStatus
ResetToDefault²
SetMotorParam
GetFullStatus
ResetToDefault²
SetMotorParam
GetFullStatus
ResetToDefault²
SetMotorParam
GetFullStatus
ResetToDefault²
SetMotorParam
GetFullStatus
ResetToDefault²
SetMotorParam
GetFullStatus
SetStallParam
GetFullStatus
SetStallParam
GetFullStatus
SetStallParam
SetOTPParam
Fail Safe
FailSafe
SetOTPParam
Stall detection delay FS2StallEn
3
GetFullStatus
SetStallParam
Stall detection
sampling
MinSamples
3
GetFullStatus
SetStallParam
PWM Jitter
PWMJEn
1
GetFullStatus
SetStallParam
100% duty cycle Stall
Disable
DC100SDis
1
GetFullStatus
SetStallParam
PWM frequency
PWMFreq
1
GetFullStatus
SetMotorParam
Comment
Reset state
16-bit signed
16-bit signed or
11-bit signed for half stepping
(see Positioning)
Note 1
‘0’ ⇒ normal acceleration from Vmin to
Vmax
‘0’
‘1’ ⇒ motion at Vmin without acceleration
Operating current
See look-up table Irun
Standstill current
See look-up table Ihold
See Section 13.3 Minimum Velocity
See look-up table Vmin
See Section 13.2 Maximum Velocity
See look-up table Vmax
Direction of movement
for positive velocity
See Section 13.4 Acceleration
See look-up table Acc
Target position when LIN connection fails;
11 MSBs of 16-bit position (LSBs fixed to
‘0’)
See Section 13.1 Stepping Modes
See look-up table StepMode
From OTP
memory
Enables entering sleep mode after LIN lost
See also 16.8 LIN lost behavior
Triggers autonomous motion after LIN lost
at POR See also 16.8 LIN lost behavior
Delays the stall detection after acceleration
‘1’ means jitter is added
‘1’ means stall detection is disabled in
case PWM regulator runs at δ = 100%
‘000’
‘000’
‘0’
‘0’
‘0’
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.
AMI Semiconductor – June 2006, Rev 3.0
31
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