AMIS-30624 Datasheet, PDF (29/56 Pages) AMI SEMICONDUCTOR – I2C Microstepping Motordriver

AMIS-30624 I²C Microstepping Motordriver
Data Sheet
15.2.8. RAM Registers
Table 18: RAM Registers
Register
Actual position
Mnemonic
ActPos
Length
(Bit)
16
Last programmed
position
Pos/
TagPos
16
Acceleration shape
AccShape
1
Coil peak current
Irun
4
Coil hold current
Ihold
4
Minimum velocity
Vmin
4
Maximum velocity
Vmax
4
Shaft
Acceleration/
deceleration
Secure position
Shaft
1
Acc
4
SecPos
11
Stepping mode
StepMode
2
Stall detection absolute
threshold
AbsThr
4
Stall detection delta
threshold
DelThr
4
Stall detection delay
FS2StallEn
3
Stall detection sampling MinSamples
3
PWM jitter
100% duty cycle stall
disable
PWM frequency
PWMJEn
1
DC100SDis
1
PWMFreq
1
Related Commands
GetFullStatus2
GotoSecurePos
ResetPosition
GetFullStatus2
GotoSecurePos
ResetPosition
SetPosition
GetFullStatus1
ResetToDefault¹
SetMotorParam
GetFullStatus1
ResetToDefault¹
SetMotorParam
GetFullStatus1
ResetToDefault¹
SetMotorParam
GetFullStatus1
ResetToDefault¹
SetMotorParam
GetFullStatus1
ResetToDefault¹
SetMotorParam
GetFullStatus1
ResetToDefault¹
SetMotorParam
GetFullStatus1
ResetToDefault¹
SetMotorParam
GetFullStatus2
ResetToDefault¹
SetMotorParam
GetFullStatus1
SetStallParam
GetFullStatus1
SetStallParam
GetFullStatus1
SetStallParam
GetFullStatus2
SetStallParam
GetFullStatus2
SetStallParam
GetFullStatus2
SetStallParam
GetFullStatus2
SetStallParam
SetMotorParam
Comment
16-bit signed
16-bit signed
(see Positioning)
‘0’ ⇒ normal acceleration from Vmin to Vmax
‘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
See Section 15.4 Motion detection
See Section 15.4 Motion detection
See Section 15.4 Motion detection
See Section 15.4 Motion detection
‘1’ means jitter is added
‘1’ means stall detection is disabled in case
PWM regulator runs at δ = 100%
‘1’ means 44 kHz is selected
Note:
A ResetToDefault command will act as a reset of the RAM content, except for ActPos and TagPos, which are 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’
AMI Semiconductor – Apr. 2007, Rev 3.1, M-20664-003
29
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