Datasheet

TMC4361A Datasheet | Document Revision 1.22 • 2017-JAN-12
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Read entire documentation; especially the “Supplemental Directives” on page 224.
 MAIN MANUAL 
In this example external start signal triggers are prioritized by making use of
START_DELAY > 0 and simultaneously setting immediate_start_in to 1.
 When XACTUAL equals POSCOMP the start timer is activated and the external
start signal in between is ignored.
 The second start event is triggered by an external start signal. The
POSCOMP_REACHED event is ignored.
The third start timer process is disrupted by the external START signal, which is
forced to be executed immediately due to the setting of:
immediate_start_in = 1.
Parameter Settings Timing Example 3
Parameter
Setting
RAMPMODE
b’000
start_en
b’00010
trigger_events
b’1001
immediate_start_in
0  1
START_DELAY
>0
pol_start_signal
1
Table 35: Parameter Settings Timing Example 3
Figure 36: Ramp Timing Example 3
SPI
VMAX
= -1000
v(t)
1000
POSCOMP_REACHED
internal start signal
START
internal start timer
t
START_DELAY
trigger event
XACTUAL=POSCOMP
-1000
VMAX
=1000
START_DELAY
trigger event
VMAX
=250
VMAX
= -250
immediate_start_in
=1
ignored trigger event due
to ongoing start timer
trigger event
trigger event
XACTUAL=POSCOMP
ignored trigger event due
to ongoing start timer
Ramp Timing
Example 3
Process
Description