Microchip Technology DM164130-10 User Manual
Main PSMC Configuration GUI
2012-2013 Microchip Technology Inc.
DS40001671B-page 19
FIGURE 2-6:
RISING EVENT CONTROL
2.16.1
Synchronous Selection
Synchronous rising event selection is made by clicking on the X leading to the upper
input to the output OR gate. When clicked, the X is replaced by a straight line leading
from the rising event time selection box to the output OR gate. Synchronous rising
events can be deselected by clicking on the input line to the OR gate to change it back
to a line terminated with an X.
The Radio button below the text box selects time or percent as the display. When time
is selected then the time entered in the text box will determine the number of
microseconds the synchronous rising event will occur after the period event. When a
time value is entered then the rising event count value is calculated based on the
psmc_clk frequency. If the display mode is changed then the displayed value changes
input to the output OR gate. When clicked, the X is replaced by a straight line leading
from the rising event time selection box to the output OR gate. Synchronous rising
events can be deselected by clicking on the input line to the OR gate to change it back
to a line terminated with an X.
The Radio button below the text box selects time or percent as the display. When time
is selected then the time entered in the text box will determine the number of
microseconds the synchronous rising event will occur after the period event. When a
time value is entered then the rising event count value is calculated based on the
psmc_clk frequency. If the display mode is changed then the displayed value changes
to correspond with the existing count. Likewise, if the psmc_clk frequency is changed
then the rising event displayed value will be changed to correspond with the existing
count except when the percent display mode is selected. The count remains constant
and the displayed value changes to avoid invalid time entries as a result of a change
to the psmc_clk value.
Entering the value as percent determines the percentage of the period the rising event
will occur after the period event. When the percent value is entered then the rising
event count is calculated based on the existing period count value. Unlike the time
value, the percent value remains constant when the psmc_clk or period values are
count except when the percent display mode is selected. The count remains constant
and the displayed value changes to avoid invalid time entries as a result of a change
to the psmc_clk value.
Entering the value as percent determines the percentage of the period the rising event
will occur after the period event. When the percent value is entered then the rising
event count is calculated based on the existing period count value. Unlike the time
value, the percent value remains constant when the psmc_clk or period values are
changed. This is possible because the new rising event count, as a result of changes
to the psmc_clk, will always be valid.
to the psmc_clk, will always be valid.
2.16.2
Asynchronous Selection
Asynchronous rising events are selected by clicking on any X leading to the 7-wide OR
gate of the control. Inputs are identified by source signal name appended by a “_B”,
which indicates that the signal first passed through the blanking function. Input
selections vary by device. When all selections are open then the connection to the
output OR gate is shown as open. This connection cannot be changed by clicking.
Instead it closes automatically when any asynchronous input is selected.
gate of the control. Inputs are identified by source signal name appended by a “_B”,
which indicates that the signal first passed through the blanking function. Input
selections vary by device. When all selections are open then the connection to the
output OR gate is shown as open. This connection cannot be changed by clicking.
Instead it closes automatically when any asynchronous input is selected.