Chapter 8 Interrupt Control©National Instruments Corporation8-15DAQ-STC Technical Reference Manual8.5 Interrupt ConditionsTable 8-2 summarizes the DAQ-STC interrupts and indicates the condition that causes eachinterrupt, when the interrupt is enabled.Table 8-2. Interrupt Condition SummaryInterrupt ConditionAI FIFO Interrupt Interrupts are generated on the FIFO condition indicated byAI_FIFO_Mode.AI Error Interrupt Interrupts are generated on the detection of an analog input overrunor overflow error condition.AI SC_TC Interrupt Interrupts are generated on every SC_TC falling edge unless thepretrigger acquisition mode is selected. In the pretrigger acquisitionmode, the first SC_TC falling edge does not generate an interrupt,but subsequent SC_TC falling edges do.AI START1 Interrupt Interrupts are generated on valid START1 triggers received by theAITM. A valid START1 trigger is one that is received while the SCcounter is armed and in the WAIT1 state. The actual interrupt signalappears on the active edge of SC_CLK.AI START2 Interrupt Interrupts are generated on valid START2 triggers received by theAITM. A valid START2 trigger is one that is received while the SCcounter is in the WAIT2 state. The actual interrupt signal appears onthe active edge of SC_CLK.AI START Interrupt Interrupts are generated on valid START triggers received by theAITM. A valid START trigger is one that is received while the SCcounter is enabled to count. The actual interrupt signal appears onthe active edge of SC_CLK.AI STOP Interrupt Interrupts are generated on valid STOP triggers recognized by theAITM. A valid STOP trigger is one that is received while the SCcounter is enabled to count. The actual interrupt signal appears onthe active edge of SC_CLK. Note that this interrupt must be used inconjunction with the START interrupt.G0 TC Interrupt Interrupts are generated on the leading edge of the G_TC signalfrom general-purpose counter 0.G0 Gate Interrupt Interrupts are generated on the G_CONTROL signal fromgeneral-purpose counter 0. Refer to section 4.8.7, Gate Actions,for a complete description.
