XC4VFX12-11FFG668I Xilinx Inc, XC4VFX12-11FFG668I Datasheet - Page 292
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XC4VFX12-11FFG668I
Manufacturer Part Number
XC4VFX12-11FFG668I
Description
IC FPGA VIRTEX-4 FX 12K 668FCBGA
Manufacturer
Xilinx Inc
Series
Virtex™-4r
Specifications of XC4VFX12-11FFG668I
Number Of Logic Elements/cells
12312
Number Of Labs/clbs
1368
Total Ram Bits
663552
Number Of I /o
320
Voltage - Supply
1.14 V ~ 1.26 V
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 100°C
Package / Case
668-BBGA, FCBGA
For Use With
HW-V4-ML403-UNI-G - EVALUATION PLATFORM VIRTEX-4HW-AFX-FF668-400 - BOARD DEV VIRTEX 4 FF668
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
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Chapter 6: SelectIO Resources
292
DIFF_SSTL18_II_DCI
DIFF_SSTL18_II_DCI
External Termination
DIFF_SSTL18_II
DIFF_SSTL18_II
DIFF_SSTL18_II
DCI
R 0 = 20
R 0 = 20
Figure 6-70: Differential SSTL (1.8V) Class II Unidirectional DCI Termination
Figure 6-71: Differential SSTL (1.8V) Class II with Bidirectional Termination
+
Ω
Ω
V
V
CCO
CCO
Figure 6-70
differential SSTL Class II (1.8V) with unidirectional DCI termination.
Figure 6-71
differential SSTL Class II (1.8V) with bidirectional termination.
= 1.8V
= 1.8V
2R
2R
2R
2R
IOB
IOB
VRP
VRN
VRP
VRN
= 2Z 0 = 100Ω
= 2Z 0 = 100Ω
= 2Z 0 = 100Ω
= 2Z 0 = 100Ω
shows a sample circuit illustrating a valid termination technique for CSE
shows a sample circuit illustrating a valid termination technique for CSE
20Ω
20Ω
V
V
CCO
CCO
= 0.9V
www.xilinx.com
= 0.9V
50Ω
50Ω
Z 0
Z 0
Z 0
Z 0
V
V
CCO
50Ω
CCO
50Ω
IOB
V
V
CCO
CCO
= 0.9V
= 0.9V
2R
2R
2R
2R
= 1.8V
= 1.8V
VRP
VRN
VRP
VRN
= 2Z 0 = 100Ω
= 2Z 0 = 100Ω
= 2Z 0 = 100Ω
= 2Z 0 = 100Ω
20Ω
20Ω
UG070 (v2.6) December 1, 2008
IOB
Virtex-4 FPGA User Guide
DIFF_SSTL18_II_DCI
DIFF_SSTL18_II
DIFF_SSTL18_II
DIFF_SSTL18_II
+
ug070_6_68_071904
ug070_6_69_071904
+
R
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