National Instruments NI PXIe-6672 - Manual (Page 15)

Chapter 3 Hardware Overview
NI PXIe-6672 User Manual 3-2 ni.com
Figure 3-1. Functional Overview of the NI PXIe-6672
CLOCK and
TRIGGER
Routing
PCI Interface
PXI
PCI
PXI_STAR<0..16>
PXI_TRIG<0..7>
CLKOUT
DDS
CLKIN
AC Coupled
Clock Detector
PLL
PXI_CLK10_IN
TCXO
Calibration
DAC TCXO
Clock
PXI_CLK10
DDS Clock
PFI 0
Threshold
DAC
PFI 0 Driver/
Comparator
PFI 1 Driver/
Comparator
PFI 2 Driver/
Comparator
PFI 3 Driver/
Comparator
PFI 4 Driver/
Comparator
PFI 5 Driver/
Comparator
PFI 2
Threshold
DAC
TCXO
PFI 1
Threshold
DAC
PFI 3
Threshold
DAC
PFI 4
Threshold
DAC
PFI 5
Threshold
DAC
CLKIN