National Instruments NI 6013, NI 6014 Timing Signal Routing

Chapter3 HardwareOverview
©NationalInstruments Corporation 3-5 NI6013/6014 User Manual
control signals, GPCTR0_UP_DOWNand GPC TR1_UP_DOWN,
are input only and do not affectthe operati on of the DIO lines.
Timing Signal Routing
The DAQ-STC chip provides a flexible interface for connecting timing
signals to other devices or external circuitry. The NI 6013/6014 uses the
ProgrammableFunction Input (PFI) pins on the I/O connector to connect
the devicet o external circuitry. Theseconnections are designed to enable
the NI 6013/6014 to both control and be controlled by other devices and
circuits.
The DAQ-STChas 13 internal timing signals that can be controlled by
an externalsource. These timing signals can also be controlled by signals
generated internallyto the DAQ-STC,and these selections are fully
softwarecon figurable.Fi gure 3-2 showsan example ofth e signal routing
multiplexercontrollin g the CONVERT*signal.
Figure3-2. CONVERT* Signal Routing
Figure3-2 shows that CONVERT* can be generated from a number
ofsou rces, including the external signals PFI<0..9> and the internal signals
SampleInterval Counter TC and GPCTR0_OUT.
Manyof these timing signals are also available on the PFI pins, as indicated
in Chapter 4, Connecting Signals.
PFI<0..9>
CONVERT*
SampleInterval Counter TC
GPCTR0_OUT