Int_Chan_2 - ICP DAS USA PIO-D64 User Manual

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2.7.4 INT_CHAN_2

Figure 2.9 illustrates the control method of timer interrupt. Note that the
signal source comes from OUT5. The INV2 can be used to invert/non-invert the
Trigger signal source and EN2 is used to disable/enable the timer interrupt
(Refer to Sec.2.5 for the source of interrupt signal). Note that the INT_CHAN_2
must be fixed in low level state normally and generated a high_pulse to
interrupt the PC. Because Counter4 and Counter5 are cascaded together, it
can be used as 32-bit timer base on 4 MHz clock source.
1. The EN2 can be used to enable/disable the INT_CHAN_2 as follows: (refer
to Figure 2.9 and Sec. 3.1.4)
EN2=0  INT_CHAN_2=disable

EN2=1  INT_CHAN_2=enable

2. The INV2 can be used to invert/non-invert the TMRIRQ as follow2: (Refer
to Figure 2.9 and Sec. 3.1.6)
INV2=0  INT_CHAN_2=inverted state of TMRIRQ

INV2=1  INT_CHAN_2=non-inverted state of TMRIRQ

NOTE: Refer to DEMO5.C in DOS operating system for more information.
PIO-D64/PIO-D64U User's Manual ( Ver.1.6, Mar. 2015, PMH-007-16 ) ----- 21
Figure 2.9