Texas Instruments AM18x eXperimenter's Kit TMDSEXP1808L TMDSEXP1808L 데이터 시트
제품 코드
TMDSEXP1808L
SPRS653E – FEBRUARY 2010 – REVISED MARCH 2014
6.28 Enhanced Capture (eCAP) Peripheral
The device contains up to three enhanced capture (eCAP) modules.
shows a functional block
diagram of a module.
Uses for ECAP include:
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Speed measurements of rotating machinery (e.g. toothed sprockets sensed via Hall sensors)
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Elapsed time measurements between position sensor triggers
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Period and duty cycle measurements of pulse train signals
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Decoding current or voltage amplitude derived from duty cycle encoded current/voltage sensors
The ECAP module described in this specification includes the following features:
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32 bit time base
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4 event time-stamp registers (each 32 bits)
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Edge polarity selection for up to 4 sequenced time-stamp capture events
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Interrupt on either of the 4 events
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Single shot capture of up to 4 event time-stamps
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Continuous mode capture of time-stamps in a 4 deep circular buffer
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Absolute time-stamp capture
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Difference mode time-stamp capture
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All the above resources are dedicated to a single input pin
The eCAP modules are clocked at the ASYNC3 clock domain rate.
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Peripheral Information and Electrical Specifications
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