National Instruments NI 6013 User Manual

Also see for NI 6013: Note to Users

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National Instruments NI 6013 User Manual Manual pdf 62 page image

Chapter 4 Connecting SignalsNI 6013/6014 User Manual 4-36 ni.comFigure 4-31. GPCTR0_OUT Signal TimingGPCTR0_UP_DOWN SignalThis signal can be externally input on the DIO6 pin and is not available asan output on the I/O connector. The general-purpose counter 0 counts downwhen this pin is at a logic low and count up when it is at a logic high.You can disable this input so that software can control the up-downfunctionality and leave the DIO6 pin free for general use.GPCTR1_SOURCE SignalAny PFI pin can externally input the GPCTR1_SOURCE signal, whichis available as an output on the PFI3/GPCTR1_SOURCE pin.As an input, GPCTR1_SOURCE is configured in the edge-detection mode.You can select any PFI pin as the source for GPCTR1_SOURCE andconfigure the polarity selection for either rising or falling edge.As an output, GPCTR1_SOURCE monitors the actual clock connected togeneral-purpose counter 1, even if the source clock is being externallygenerated by another PFI. This output is set to high-impedance at startup.GPCTR0_SOURCEGPCTR0_OUTGPCTR0_OUT(Toggle Output on TC)(Pulse on TC)TC