AMIS-30623 LIN Microstepping Motordriver
Data Sheet
15.2.9. RAM Registers
Table 19: RAM Registers
Register
Actual position
Mnemonic
ActPos
Length
(bit)
16
Related commands
Comment
16-bit signed
16-bit signed or
11-bit signed for half stepping
(see
‘0’
⇒
normal acceleration from Vmin to
Vmax
‘1’
⇒
motion at Vmin without acceleration
Operating current
See look-up table
Standstill current
See look-up table
See Section
See look-up table
See Section
See look-up table
Direction of movement
for positive velocity
See Section
See look-up table
Target position when LIN connection fails;
11 MSBs of 16-bit position (LSBs fixed to
‘0’)
See Section
See look-up table
Reset state
Note 1
Last programmed
position
Pos/
TagPos
16/11
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
Fail Safe
Stall detection delay
Stall detection
sampling
PWM Jitter
100% duty cycle Stall
Disable
PWM frequency
AccShape
1
4
4
4
4
1
4
11
2
4
4
‘0’
Irun
Ihold
Vmin
Vmax
Shaft
Acc
From OTP
memory
SecPos
StepMode
AbsThr
DelThr
SleepEn
FailSafe
FS2StallEn
MinSamples
PWMJEn
DC100SDis
PWMFreq
Enables entering sleep mode after LIN lost
See also
Triggers autonomous motion after LIN lost
at POR See also
Delays the stall detection after acceleration
‘000’
‘000’
‘1’ means jitter is added
‘1’ means stall detection is disabled in
case PWM regulator runs at
δ
= 100%
‘0’
‘0’
‘0’
3
3
1
1
1
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
www.amis.com
AMI [ AMI SEMICONDUCTOR ]
