AMIS-30624_13 Datasheet, PDF (31/52 Pages) ON Semiconductor – I2C Micro-stepping Motor Driver

AMIS−30624, NCV70624
31. <ElFlag> = <CPFail> or <UV2> or <ElDef> or <VDDreset>
32. After power−on−reset, the <Standby> state is entered.
33. A DualPosition sequence runs with a separate set of RAM registers. The parameters that are not specified in a DualPosition command are
loaded with the values stored in RAM at the moment the DualPosition sequence starts. <AccShape> is forced to ‘1’ during second motion.
<AccShape> at ‘0’ will be taken into account after the DualPosition sequence. A GetFullStatus1 command will return the default
parameters for <Vmax> and <Vmin> stored in RAM.
34. Shutdown state can be left only when <TSD> and <HS> flags are reset.
35. Flags can be reset only after the master could read them via a GetFullStatus1 command, and provided the physical conditions allow
for it (normal temperature, correct battery voltage and no electrical or charge pump defect).
36. A SetMotorParam command sent while a motion is ongoing (state <GotoPos>) should not attempt to modify <Acc> and <Vmin> values.
This can be done during a DualPosition sequence since this motion uses its own parameters, the new parameters will be taken into account
at the next SetPosition command.
37. <SecEn> = ‘1’ when register <SecPos> is loaded with a value different from the most negative value (i.e. different from 0x400 = “100 0000
0000”).
38. <Stop> flag allows distinguishing whether state <Stopped> was entered after HardStop/SoftStop or not. <Stop> is set to ‘1’ when leaving
state <HardStop> or <SoftStop> and is reset during first clock edge occurring in state <Stopped>.
39. While in state <Stopped>, if <ActPos>  <TagPos> there is a transition to state <GotoPos>. This transition has the lowest priority,
meaning that <Stop>, <TSD>, etceteras are first evaluated for possible transitions.
40. If <StepLoss> is active, then SetPosition and GotoSecurePosition commands are not ignored. <StepLoss> can only be cleared
by a GetFullStatus1 command.
POR
Shutdown
Referencing
Thermal Shutdown
Soft−stop
HardStop ^HardStop
Dual Positioning Motion finished HardStop
Thermal
ShutDown
SoftStop
HardStop
Thermal Shutdown
GetFullStatus1
Stopped
Motion Finished
GotoSecPos
SetPosition
Motion Finished
HardStop
GotoPos
Priorities ¹
2
3
4
Motion Finished
Vbb < UV2 or CPFAIL
Vbb < UV2 or CPFAIL
HardUnder
T > 15 sec
Vbb > UV1 and not CPFAIL
ShutUnder
Figure 16. Simplified State Diagram
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