Operation & Calibration
35
Mode 5: Single-Triggered Pulse
This mode generates a single pulse with programmable delay and pro
-
grammable pulse-width following an active GPTC_GATE edge. These
programmable parameters can be specified in terms of periods of the
GPTC_CLK input. When the first GPTC_GATE edge triggers the single
pulse, GPTC_GATE has no effect until software start is executed again.
Generation of a single pulse with a pulse delay of two and a pulse-width
of four is shown.
Figure 3-18: Mode 5-Single-Triggered Pulse
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 software start,
every active GPTC_GATE edge triggers a single pulse with programma
-
ble delay and pulse width. Any GPTC_GATE triggers that occur when the
prior pulse is not completed are ignored. Generation of two pulses with
a pulse delay of two and a pulse width of four is shown.
Figure 3-19: Mode 6-Re-Triggered Single Pulse
2
2
1
0
3
2
1
0
Gate
CLK
Count value
OUT
Software start
2
2
1
0
3
2
1
0
2
2
1
0
3
2
1
0
2
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
Содержание USB-61210
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