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MAN0878-09-EN_XLE_XLT_UserManual

A u g u s t 2 3 , 2 0 1 8 P a g e 83 | 158

12.2.2 Totalize

In totalize mode, the accumulator is simply incremented or decremented each time the input

transitions in a specific direction. Totalize mode is configurable to specify the edge (rising or

falling) on which the accumulator is incremented.

The totalizer supports the following modes:

Table 12.2 – Modes supported by Totalizer

Internal

This mode ties the input to the counter to an internal 10 MHz or 1

MHz clock. The special functions can be used to accurately time

events.

Count Up

This increments the accumulator when the input is enabled.

NOTE: Two inputs can be assigned. Either input can cause the

counter to increment. The second input can also be disabled.

Count Down

This decrements the accumulator when the input is enabled.

NOTE: Two inputs can be assigned. Either input can cause the

counter to decrement. The second input can also be disabled.

Up/Down

(Input 1 Up/Input 2

Down)

In this mode, Input 1 (assigned to any of the four inputs)

increments the counter, while Input 2 (also assigned to any of the

4 inputs) decrements the counter.

Clk/Dir

(Input 1 Clk, Input 2

Dir)

This mode uses Input 1 as a clock signal to increment or decrement

the counter and then uses Input 2 to decide the direction. Input 2

disabled increments the counter, while Input 2 enabled

decrements the counter.

NOTE: The totalize mode enables the Disable, Latch, Preload, and Clear special functions.

Please see Section 12.2 for details.

NOTE: Counter triggers off the rising edge of the signal.

HORNER XLE-Model 2 User Manual

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