Xilinx RocketIO User Manual page 113

Product Not Recommended for New Designs
PCB Design Requirements
AVCCAUXTX, and AVCCAUXRX supplies. The ferrite beads are mounted at the sixteen
"L[n]" locations.
The device in
transceivers total – four on the top edge, and four on the bottom edge. This device does not
have capacitors inside the package, so it is necessary to have both capacitors and ferrite
beads mounted on the PCB.
capacitors and ferrite beads of the VTTX and VTRX supplies.
PCB layer, with lands for the capacitors and ferrite beads of the AVCCAUXTX and
AVCCAUXRX supplies. The ferrite beads are mounted at the eight "L[n]" locations; the
capacitors are mounted at the eight "C[n]" locations.
RocketIO™ Transceiver User Guide
UG024 (v3.0) February 22, 2007
Figure 3-9: Example Power Filtering PCB Layout for Four MGTs, in Device with
Internal Capacitors, Bottom Layer
Figure 3-10 and
www.xilinx.com
Figure 3-11 is an FG456 package, which also has eight
Figure 3-10 shows the top PCB layer, with lands for the
Figure 3-11 shows the bottom
R
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