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Texas Instruments TMS570LC4357

Texas Instruments TMS570LC4357
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eCAP Registers
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1950
SPNU563AMarch 2018
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Copyright © 2018, Texas Instruments Incorporated
Enhanced Capture (eCAP) Module
Table 33-8. ECAP Control Register 2 (ECCTL2) Field Descriptions (continued)
Bits Field Value Description
3 REARM One-Shot Re-Arming Control, wait for stop trigger. Note: The re-arm function is valid in one shot or
continuous mode.
0 Has no effect (reading always returns a 0).
1 Arms the one-shot sequence as follows:
1) Resets the Mod4 counter to 0
2) Unfreezes the Mod4 counter
3) Enables capture register loads
2-1 STOP_WRAP Stop value for one-shot mode. This is the number (between 1-4) of captures allowed to occur
before the CAP(1-4) registers are frozen, capture sequence is stopped.
Wrap value for continuous mode. This is the number (between 1-4) of the capture register in which
the circular buffer wraps around and starts again.
0 Stop after Capture Event 1 in one-shot mode.
Wrap after Capture Event 1 in continuous mode.
1h Stop after Capture Event 2 in one-shot mode.
Wrap after Capture Event 2 in continuous mode.
2h Stop after Capture Event 3 in one-shot mode.
Wrap after Capture Event 3 in continuous mode.
3h Stop after Capture Event 4 in one-shot mode.
Wrap after Capture Event 4 in continuous mode.
Notes: STOP_WRAP is compared to Mod4 counter and, when equal, 2 actions occur:
Mod4 counter is stopped (frozen)
Capture register loads are inhibited
In one-shot mode, further interrupt events are blocked until re-armed.
0 CONT_ONESHT Continuous or one-shot mode control (applicable only in capture mode).
0 Operate in continuous mode.
1 Operate in one-shot mode.

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