XC4VFX20-10FFG672C Xilinx Inc, XC4VFX20-10FFG672C Datasheet - Page 292

• Manufacturer Part Number: XC4VFX20-10FFG672C
• Description: IC FPGA VIRTEX-4 FX 20K 672-FBGA
• Manufacturer: Xilinx Inc
• Series: Virtex™-4r

Specifications of XC4VFX20-10FFG672C

• Total Ram Bits: 1253376
• Number Of Logic Elements/cells: 19224
• Number Of Labs/clbs: 2136
• Number Of I /o: 320
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 672-BBGA, FCBGA
• No. Of Logic Blocks: 19224
• No. Of Macrocells: 19224
• No. Of Speed Grades: 10
• No. Of I/o's: 320
• Clock Management: DCM
• I/o Supply Voltage: 3.45V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: HW-V4-ML405-UNI-G - EVALUATION PLATFORM VIRTEX-4
• Number Of Gates: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

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