XC4VFX12-11FFG668I Xilinx Inc, XC4VFX12-11FFG668I Datasheet - Page 286
![no-image](/images/no-image-200.jpg)
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
286
DIFF_SSTL2_II_DCI
DIFF_SSTL2_II_DCI
External Termination
DIFF_SSTL2_II
DIFF_SSTL2_II
DIFF_SSTL2_II
DCI
R 0 = 25
R 0 = 25
Figure 6-63: Differential SSTL2 (2.5V) Class II Unidirectional DCI Termination
Figure 6-64: Differential SSTL2 (2.5V) Class II with Bidirectional Termination
Ω
Ω
+
–
V
V
CCO
CCO
Figure 6-63
differential SSTL2 Class II (2.5V) with unidirectional DCI termination.
Figure 6-64
differential SSTL2 Class II (2.5V) with bidirectional termination.
= 2.5V
= 2.5V
2R
2R
2R
2R
IOB
VRP
VRN
VRP
VRN
IOB
= 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
25Ω
25Ω
V
V
TT
TT
= 1.25V
= 1.25V
www.xilinx.com
50Ω
50Ω
Z 0
Z 0
Z 0
Z 0
V
V
TT
50Ω
TT
50Ω
IOB
= 1.25V
= 1.25V
V
V
CCO
CCO
2R
2R
2R
2R
= 2.5V
= 2.5V
VRP
VRN
VRP
VRN
25Ω
25Ω
= 2Z 0 = 100Ω
= 2Z 0 = 100Ω
= 2Z 0 = 100Ω
= 2Z 0 = 100Ω
UG070 (v2.6) December 1, 2008
IOB
Virtex-4 FPGA User Guide
DIFF_SSTL2_II_DCI
DIFF_SSTL2_II
DIFF_SSTL2_II
DIFF_SSTL2_II
ug070_6_62_121206
+
–
+
ug070_6_61_071904
R
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