Programmable function input connections, Figure 4-7. timing i/o connections, Programmable function input connections -16 – National Instruments PCI-6110E/6111E User Manual

Page 49: Figure 4-7, Timing i/o connections -16

Chapter 4

Signal Connections

4-16

All digital timing connections are referenced to DGND. This reference
is demonstrated in Figure 4-7, which shows how to connect an external
TRIG1 source and an external CONVERT* source to two 611X E board
PFI pins.

Figure 4-7. Timing I/O Connections

Programmable Function Input Connections

There are a total of 13 internal timing signals that you can externally
control from the PFI pins. The source for each of these signals is
software-selectable from any of the PFIs when you want external
control. This flexible routing scheme reduces the need to change the
physical wiring to the board I/O connector for different applications
requiring alternative wiring.

You can individually enable each of the PFI pins to output a specific
internal timing signal. For example, if you need the CONVERT* signal
as an output on the I/O connector, software can turn on the output driver

TRIG1

Source

DGND

PFI0/TRIG1

PFI2/CONVERT*

CONVERT*

Source

I/O Connector

611

X E Board

PCI_E.book Page 16 Thursday, June 25, 1998 12:55 PM