1 Commonly Used UTMR Settings

As a reference, the following table describes the selections for the most commonly used settings for the UTMR configuration used throughout this document. Refer to the device specific data sheet or TB3264 for more information.

Table 1-1. Commonly Used UTMR Settings
UTMR Bit SettingDescriptionPossible Selections
STARTStart condition of the timer

00 = None (ON = 1)

01 = Either ERS Edge

10 = Rising ERS Edge

11 = ERS Level - 1

RESETReset condition of the timer

00 = None

01 = ERS Level - 0 + PR Match

10 = at Start + PR Match

11 = at PR Match

STOPStop condition of the timer

00 = None

01 = Either ERS Edge

10 = Rising ERS Edge

11 = at PR Match

CPOLClock polarity – selects the active clock edge

0 = Falling Clock Edge (default)

1 = Rising Clock Edge

EPOLERS polarity – inverts the polarity of ERS signals

0 = True ERS Levels (default)

1 = Inverted ERS Levels

OSENOne-shot mode enable – stops the timer and then disables it (ON = 0)

0 = Disabled (default)

1 = Enabled

LIMITLimit mode enable - prevents the counter from exceeding the PR value

0 = Disabled (default)

1 = Enabled

CAPTCapture command bit – captures the current counter value in the capture register

0 = Capture is complete (or not started)

1 = Counter value capture in progress

CLRClear command bit – clears the counter and prescaler counter values

0 = Clearing is complete (or not started)

1 = Counter/Prescaler counter value clear in progress

OMOutput mode – chooses the type of output

0 = Pulse Output (default)

1 = Level Output

OPOLOutput polarity – chooses the polarity of the output

0 = Low output when idle (default)

1 = High output when idle

CSYNCClock synchronization – synchronizes ERS and other input/output signals and commands to timer clock

0 = Disabled/Async

1 = Enabled/Sync (default)

TUCHAINChains two UTMR instances to form a bigger timerRefer to device specific data sheet