Datasheet

TMS570LS0432

TMS570LS0332

www.ti.com

SPNS186A –OCTOBER 2012–REVISED SEPTEMBER 2013

• Enhanced power-down mode

– Optional feature to automatically power down ADC core when no conversion is in progress

• External event pin (ADEVT) programmable as general-purpose I/O

5.2.2 Event Trigger Options

The ADC module supports 3 conversion groups: Event Group, Group1 and Group2. Each of these 3

groups can be configured to be hardware event-triggered. In that case, the application can select from

among 8 event sources to be the trigger for a group's conversions.

5.2.2.1 MIBADC Event Trigger Hookup

Table 5-3. MIBADC Event Trigger Hookup

Event # Source Select Bits For G1, G2 Or Event Trigger

(G1SRC[2:0], G2SRC[2:0] or EVSRC[2:0])

1 000 ADEVT

2 001 N2HET[8]

3 010 N2HET[10]

4 011 RTI compare 0 interrupt

5 100 N2HET[12]

6 101 N2HET[14]

7 110 N2HET[17]

8 111 N2HET[19]

NOTE

For ADEVT, N2HET trigger sources, the connection to the MibADC 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, or by driving the function from an

external trigger source as input. If the mux controller module is used to select different

functionality instead of ADEVT or N2HET[x], care must be taken to disable these signals

from triggering conversions; there is no multiplexing on input connections.

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.

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