TMS570LS1114 datasheet(122/169 Pages) TI1

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TMS570LS1114

SPNS188B – OCTOBER 2012 – REVISED FEBRUARY 2015

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NOTE

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.

ePWM_B,

ePWM_S2,

ePWM_AB,

N2HET2[5],

N2HET2[1],

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.

7.4.2.3

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

As shown in Figure 7-5, the ePWMxSOCA and ePWMxSOCB outputs from each ePWM module are used

to generate 4 signals – ePWM_B, ePWM_A1, ePWM_A2 and ePWM_AB, that are available to trigger the

ADC based on the application requirement.

122

Peripheral Information and Electrical Specifications

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