Chapter 4 General-Purpose Counter/TimerDAQ-STC Technical Reference Manual4-66 ©National Instruments CorporationThe TC related output signal G_OUT routing is not symmetrical for the two counters. Bothcounter outputs are available on PFI<0..9>. The output of only one counter (counter 0) isavailable on RTSI_TRIGGER<0..6>.The counter output pins are G_OUT0/RTSI_IO and G_OUT1/DIV_TC_OUT. As the pinnames reflect, these pins have multiplexers on the outputs. Table 4-12 indicates how thebitfield GPFO_0_Output_Select controls the G_OUT0/RTSI_IO pinTable 4-13 indicates how the bitfield GPFO_1_Output_Select controls theG_OUT1/DIV_TC_OUT pin.EXT_DIVTC is the AITM DIV counter output. The multiplexed functionality on theG_OUT1/DIV_TC_OUT is utilized by the SCXI systems.GPFO_0_Output_Enable and GPFO_1_Output_Enable control the output enables for thesepins.To facilitate the use of the timing output capability of the GPCT counters, the outputs connectinternally to the other DAQ-STC modules. The general-purpose counter 0 output G_OUTconnects to the AITM of the DAQ-STC. The general-purpose counter 1 output G_OUTconnects to the AOTM of the DAQ-STC. Refer to the appropriate module description formore details.Table 4-12. G_OUT0/RTSI_IO SelectionGPFO_0_Output_Select Selection0 G_OUT signal from general-purpose counter 01–7 RTSI_TRIGGER<0..6>Table 4-13. G_OUT1/DIV_TC_OUT SelectionGPFO_1_Output_Select Selection0 G_OUT1 signal from general-purpose counter 01 Internal analog input signal EXT_DIVTC
