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Table 6.
NI 6589 DDC Signals and FlexRIO FPGA Module Signals (Continued)
NI 6589
FlexRIO FPGA Module
Signal Name
GPIO Input
GPIO Output
GPIO Direction
DDC CLOCK OUT LVDS+
—
GPIO_43
GPIO_7_n (as enable)
DDC CLOCK OUT LVDS-
GPIO_43_n
SE_PFI_1
GPIO_44_n
GPIO_37_n
GPIO_44 (as enable)
SE_PFI_2
GPIO_42_n
GPIO_34_n
GPIO_42 (as enable)
SE_PFI_3
GPIO_35
GPIO_33_n
GPIO_35_n (as enable)
Refer to the
FlexRIO Help
for more information about FlexRIO CLIP items, configuring the
NI 6589 with a socketed CLIP, and a list of available socketed CLIP signals.
Clocking
The clocks on the NI 6589 control the sample rate and other timing functions on your FlexRIO
system. The following figure shows the NI 6589 clock sources routed through the crosspoint
switch. The Generation Bank I/O clock, PFI Bank I/O clock, and Global clock are all sourced
by the crosspoint switch. The Acquisition Bank I/O clock can be sourced from the crosspoint
switch or accessed directly through the Strobe Bypass path.
Note
Only the Acq_IO_Clock_Source signal can use the STROBE Bypass path. If
Acq_IO_Clock_Source is set to Strobe Bypass, then Gen_IO_Clock_Source,
PFI_IO_Clock_Source, and IO_Module_Clock_1_Source cannot be set to Strobe
From Crosspoint Switch.
18
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NI 6589 Getting Started Guide