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TMS570LS0714
SPNS226E –JUNE 2013–REVISED NOVEMBER 2016
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Peripheral Information and Electrical Specifications Copyright © 2013–2016, Texas Instruments Incorporated
Notes
If AD2EVT, N2HET1, or GIOB is used as a 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 the function as output onto the pad (through
the mux control), or by driving the function from an external trigger source as input. If the
mux control module is used to select different functionality instead of the AD2EVT,
N2HET1[x] or GIOB[x] signals, then care must be taken to disable these signals 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 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.
7.5.2.3 Controlling ADC1 and ADC2 Event Trigger Options Using SOC Output from ePWM Modules
As shown in Figure 7-10, 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.
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