XC4VFX20-11FFG672C Xilinx Inc, XC4VFX20-11FFG672C Datasheet - Page 266

• Manufacturer Part Number: XC4VFX20-11FFG672C
• Description: IC FPGA VIRTEX-4 FX 20K 672-FBGA
• Manufacturer: Xilinx Inc
• Series: Virtex™-4r

Specifications of XC4VFX20-11FFG672C

• Number Of Logic Elements/cells: 19224
• Number Of Labs/clbs: 2136
• Total Ram Bits: 1253376
• 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
• For Use With: HW-V4-ML405-UNI-G - EVALUATION PLATFORM VIRTEX-4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -

Chapter 6: SelectIO Resources
266
External Termination
DCI
HSTL Class II
HSTL_II_DCI
HSTL_II
2R
2R
Figure 6-40
Class II (1.5V) with unidirectional termination.
Figure 6-40: HSTL (1.5V) Class II Unidirectional Termination
IOB
VRN
VRP
= 2Z 0 = 100Ω
= 2Z 0 = 100Ω
V
TT
V
shows a sample circuit illustrating a valid termination technique for HSTL
CCO
= 0.75V
R P = Z 0 = 50Ω
= 1.5V
IOB
www.xilinx.com
Z 0
R P = Z 0 = 50Ω
Z 0
V
TT
IOB
V
= 0.75V
CCO
2R
2R
= 1.5V
VRP
VRN
IOB
V
= 2Z 0 = 100Ω
= 2Z 0 = 100Ω
REF
V
REF
= 0.75V
= 0.75V
UG070 (v2.6) December 1, 2008
Virtex-4 FPGA User Guide
HSTL_II_DCI
HSTL_II
+
ug070_6_38_071904
+
R