Texas Instruments Hercules TMS570LS04x/03x LaunchPad Evaluation Kit LAUNCHXL-TMS57004 LAUNCHXL-TMS57004 数据表
产品代码
LAUNCHXL-TMS57004
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.
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.
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.
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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Peripheral Information and Electrical Specifications
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