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© National Instruments
|
7-3
NI High-Speed Serial Instruments User Manual
For more information about lane and channel bonding caveats, including cases where you need
to use single or multiple reference clocks for single or multiple transceivers, refer to
7 Series
FPGAs GTX/GTH Transceivers User Guide
(UG476) at
xilinx.com
.
Signal Routing
The PXIe-7902 high-speed serial differential signals are routed directly from the Virtex-7 FPGA
pins to the PORT 0, PORT 1, PORT 2, PORT 3, PORT 4, and PORT 5 connector pins, as shown
in the following figure. This signal routing is replicated for every lane across every port.
Figure 7-2.
PXIe-7902 Signal Routing
Socketed CLIP Interface
Socketed CLIP allows you to insert HDL IP into an FPGA target, enabling VHDL code to
communicate directly with an FPGA VI. Socketed CLIP also allows the CLIP to communicate
directly with circuitry external to the FPGA.
The following sections provide information about how to configure your device for use with
socketed CLIP.
Table 7-3.
Clock Signal and Quad Mapping
Clock Signal
Quad Location
Physical Resource
MGT_RefClk0
Quad 3 (Q3)
REFCLK1_Q3
MGT_RefClk1
Quad 2 (Q2)
REFCLK0_Q2
MGT_RefClk2
Quad 3 (Q3)
REFCLK0_Q3
PORT
Connector
C
ab
le
Tx+
Rx+
Rx–
Tx–
Xilinx Virtex-7 FPGA
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