Table of Contents
Advertisement
Figure 1-62
SSTL18 with bidirectional DCI termination. DIFF_SSTL18_II_DCI is the only available DCI
standard for bidirectional use signaling. The DCI versions of DIFF_SSTL18_I,
DIFF_SSTL15, DIFF_SSTL135, and DIFF_SSTL12 are only available for unidirectional
signaling. Use the T_DCI standards for bidirectional signaling of DIFF_SSTL15,
DIFF_SSTL135, and DIFF_SSTL12 with DCI termination.
X-Ref Target - Figure 1-62
DCI
DIFF_SSTL18_II_DCI
R
VRN
R
VRP
DIFF_SSTL18_II_DCI
DIFF_SSTL18_II_DCI
+
R
VRN
–
R
VRP
Figure 1-62: Differential SSTL18 Class II with DCI Bidirectional Termination
7 Series FPGAs SelectIO Resources User Guide
UG471 (v1.10) May 8, 2018
shows a sample circuit illustrating a termination technique for differential
IOB
V
= 1.8V
CCO
= 2Z 0 = 100Ω
= 2Z 0 = 100Ω
V
= 1.8V
CCO
= 2Z 0 = 100Ω
= 2Z 0 = 100Ω
www.xilinx.com
Supported I/O Standards and Terminations
IOB
V
= 1.8V
CCO
R
= 2Z 0 = 100Ω
VRN
Z 0
R
= 2Z 0 = 100Ω
VRP
Z 0
V
= 1.8V
CCO
R
= 2Z 0 = 100Ω
VRN
R
= 2Z 0 = 100Ω
VRP
DIFF_SSTL18_II_DCI
DIFF_SSTL18_II_DCI
DIFF_SSTL18_II_DCI
+
–
ug471_c1_52_121214
83
Send Feedback
Advertisement
Table of Contents
