Datasheet

168

RM57L843

SPNS215C –FEBRUARY 2014–REVISED JUNE 2016

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NOTE

For AD2EVT trigger source, the connection to the MibADC2 module trigger input is made

from the output side of the input buffer. This way, a trigger condition can be generated either

by configuring AD2EVT as an output function on to the pad (through the mux control), or by

driving the AD2EVT signal from an external trigger source as input. If the mux control module

is used to select different functionality instead of the AD2EVT signal, then care must be

taken to disable AD2EVT from triggering conversions; there is no multiplexing on the input

connections.

If ePWM_B, ePWM_A2, ePWM_AB, N2HET2[1], N2HET2[5], N2HET2[13], N2HET1[11],

N2HET1[17], or N2HET1[19] is used to trigger the ADC, the connection to the ADC is made

directly from the N2HET or ePWM module outputs. As a result, the ADC can be triggered

without having to enable the signal from being output on a device terminal.

NOTE

For N2HETx trigger sources, the connection to the MibADC2 module trigger input is made

from the input side of the output buffer (at the N2HETx module boundary). This way, a

trigger condition can be generated even if the N2HETx signal is not selected to be output on

the pad.

NOTE

For the RTI compare 0 interrupt source, the connection is made directly from the output of

the RTI module. That is, the interrupt condition can be used as a trigger source even if the

actual interrupt is not signaled to the CPU.

7.4.2.3 Controlling ADC1 and ADC2 Event Trigger Options Using SOC Output from ePWM Modules

As shown in Figure 7-8, the ePWMxSOCA and ePWMxSOCB outputs from each ePWM module are used

to generate four signals – ePWM_B, ePWM_A1, ePWM_A2, and ePWM_AB, that are available to trigger

the ADC based on the application requirement.