Chapter4 ConnectingSignals
ATE Series User Manual 4-46 ni.com
Figure 4-32 showsthe timing requiremen tsf orth e GPCTR0_GATEsignal.
Figure4-32. GPCTR0_GATESignal Timing in Edge-Detection Mode
GPCTR0_OUT Signal
This signal is available only as an output on the GPCTR0_OUT pin. The
GPCTR0_OUTsignal reflects th e terminal count (TC) of general-purpose
counter0. You have two software-selectable outpu to ptions—pulse on TC
andtoggle output polarity on TC. The output polarity is software selectable
for both options. This output is set to high-impedance at startup.
Figure 4-33 shows the timing of the GPCTR0_OUT signal.
Figure4-33. GPCTR0_OUTSignal Timing
GPCTR0_UP_DOWN Signal
Thissignal can be externally in put on the DIO6 pin and is not available as
anoutput on the I/O connector. The general-purpose counter 0 counts down
whenthis pin is at a logic low and co unts up when it is at a logic high. You
can disable this input so that software can control the up-down
functionality and leave the DIO6 pin free for general use.
Rising-Edge
Polarity
Falling-Edge
Polarity
tw=10 ns minimum
tw
GPCTR0_SOURCE
GPCTR0_OUT
GPCTR0_OUT
(ToggleOutput on TC)
(Pulseon TC)
TC