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24 iPORT Advanced Features User Guide
Enhanced Functional Blocks
The following sections provide descriptions of the enhanced functional blocks.
Timer
The timer generates a pulsed digital signal with a configurated frequency and duty cycle.
The timer can be configured to emit a continuous (periodic) pulse. The timer can also be configured to
emit a single pulse after receiving an input trigger signal. It outputs the low section of the pulse first with
a programmable built-in delay. Subsequent inputs are ignored until the timer completes its pulse.
Depending on the video interface model, there may be up to four timers available, numbered 0 through 3.
Counter
The counter can maintain a count between 0 and 2
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-1 (long integer). Different inputs can be used to
increment, decrement, or clear the counter value.
The counter outputs two separate signals that indicate when the count is equal to and greater than the
compare value that can be set.