07-Timers - Programmable Timers Reading: xps_timer.pdf Some...

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Programmable Timers ± Reading: xps_timer.pdf
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Some major goals Measure time durations for input signals Æ “Capture Mode” Generate output signals of known durations (single pulses, or periodic waveforms) Æ “Generate Mode” ary the pulse duration for an utput Vary the pulse duration for an output waveform of a known frequency WM Mode” Æ PWM Mode
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Main idea ± Increment (or decrement) n internal counter on a regular basis an internal counter on a regular basis ² “Timer/Counter Register” ² Use internal (PLB) clock to trigger it ± Initialize this counter with a carefully hosen value chosen value ± Observe how far it counts between 2 vents of interest events of interest
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“Generate Mode” Examples Real-time clock cheduler of sequence of events: Scheduler of sequence of events: TURN GREEN AT COUNT= 12331 TURN RED AT COUNT= 33132 TURN YELLOW AT COUNT= 26931
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ps timer overview xps_timer overview
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What is it? 32- it timer module that attaches to the A 32 bit timer module that attaches to the Processor Local Bus (PLB) wo programmable interval timers with Two programmable interval timers with
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07-Timers - Programmable Timers Reading: xps_timer.pdf Some...

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