44
Operation Theory
After the software start, every active GPTC_GATE edge trig-
gers a single pulse with programmable delay and pulse-width.
Any GPTC_GATE trigger that occurs during the pulse genera-
tion would be ignored. Figure 4-22 illustrates the generation of
two pulses with pulse delay of two and pulse-width of four.
Figure 4-22: Mode 6 Operation
Mode7: Single Triggered Continuous Pulse Generation
This mode is similar to mode 5, except that the counter gener-
ates con-tinuous periodic pulses with programmable pulse
interval and pulse-width following the first active edge of
GPTC_GATE. Once the first GPTC_GATE edge triggers the
counter, GPTC_GATE takes no effect until the software start is
re-executed. Figure 4-23 illustrates the generation of two
pulses with pulse delay of four and pulse-width of three.
Figure 4-23: Mode 7 Operation
Mode8: Continuous Gated Pulse Generation
This mode generates periodic pulses with programmable pulse
interval and pulse-width following the software start.
GPTC_GATE is used to enable/disable counting. When
GPTC_GATE is inactive, the counter halts the current count
