Xilinx Spartan-6 FPGA Series

58 www.xilinx.com Spartan-6 FPGA PCB Design and Pin Planning
UG393 (v1.1) April 29, 2010
Chapter 5: Design of Transitions for High-Speed Signals
X-Ref Target - Figure 5-17
Figure 5-17: Simulated TDR of 45 Degree Bends with Jog-Outs
X-Ref Target - Figure 5-18
Figure 5-18: Simulated TDR of 45 Degree Bends with Jog-Outs
2.5
2.0
1.5
1.0
0.5
0.0
-0.5
0.0 0.2 0.4 0.6
Time, ns
0.8 1.0
vtdr_dutp, V
vtdr_dutn, V
vtdr_dutn2, V vtdr_dutp2, V
UG393_c5_17_091809
-10
-20
-30
-40
-50
-60
1E8 1E9
Frequency, Hz
1E10
5E10
dB(Sdd11x)
dB(Sdd11)
UG393_c5_18_091809