User`s guide

Operation Theory
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51
4.4.2.5 Mode 5: Single Triggered Pulse Generation
This function generates a single pulse with programmable delay and pro-
grammable pulse-width following an active GPTC_GATE edge. Users can
specify these programmable parameters in terms of periods of the
GPTC_CLK input. Once the first GPTC_GATE edge triggers the single
pulse, GPTC_GATE takes no effect until the software-start is re-executed.
Figure 35 illustrates the generation of a single pulse with a pulse delay of
two and a pulse-width of four.
22 103210
Gate
CLK
Count value
OUT
Software start
Figure 35: Mode 5 Operation
4.4.2.6 Mode 6: Re-triggered Single Pulse Generation
This mode is similar to mode 5 except that the counter generates a pulse
following every active edge of GPTC_GATE. After the software-start, every
active GPTC_GATE edge triggers a single pulse with programmable delay
and pulse-width. Any GPTC_GATE triggers that occur when the prior pulse
is not completed would be ignored. Figure 36 illustrates the generation of
two pulses with a pulse delay of two and a pulse-width of four.
22 1032102
2 1 0
32102
2
G a t e
C L K
C o u n t v a l u e
O U
T
S o f t w a r e s t a r t
I g n o r e d
Figure 36: Mode 6 Operation