Xilinx SelectIO 7 Series - Page 186

186 www.xilinx.com 7 Series FPGAs SelectIO Resources User Guide
UG471 (v1.10) May 8, 2018
Appendix A: Termination Options for SSO Noise Analysis
X-Ref Target - Figure A-1
Figure A-1: Default Terminations
ug471_aA_01_050212
Unterminated
Z=50
Z=50
50Far-end Parallel Termination to V
CCO
FP_VCCO_50
V
CCO
50
1KFar-end Parallel Termination to V
CCO
FP_VCCO_1000
V
CCO
Z=50
1K
Z=50
50Far-end Parallel Termination to 3.3V
FP_3.3_50
3.3V
50
1KFar-end Parallel Termination to 3.3V
FP_3.3_1000
3.3V
Z=50
1K
50Far-end Parallel Termination to V
TT
FP_VTT_50
V
TT
= V
CCO
/2
Z=50
50
50Near-end Parallel Termination to V
TT
50Far-end Parallel Termination to V
TT
NP_VTT_50_FP_VTT_50
100Far-end Differential Termination
FD_100
V
TT
= V
CCO
/2
Z=50
50
100
V
TT
= V
CCO
/2
50
165Near Series, 140Near Differential,
100Far Differential
NS_165_ND_140_FD_100
Z=50
Z
DIFF
=100
100
140
165
165
Z=50
70Near Series, 187Near Differential,
100Far Differential
NS_70_ND_187_FD_100
Z=50
100
187
70
70
Z=50
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