XC5VLX220-2FFG1760C Xilinx Inc, XC5VLX220-2FFG1760C Datasheet - Page 244

• Manufacturer Part Number: XC5VLX220-2FFG1760C
• Description: IC FPGA VIRTEX-5 220K 1760FBGA
• Manufacturer: Xilinx Inc
• Series: Virtex™-5 LXr

Specifications of XC5VLX220-2FFG1760C

• Number Of Logic Elements/cells: 221184
• Number Of Labs/clbs: 17280
• Total Ram Bits: 7077888
• Number Of I /o: 800
• Voltage - Supply: 0.95 V ~ 1.05 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 1760-BBGA, FCBGA
• Package: 1760FCBGA
• Family Name: Virtex®-5
• Device Logic Units: 221184
• Typical Operating Supply Voltage: 1 V
• Maximum Number Of User I/os: 800
• Ram Bits: 7077888
• For Use With: HW-AFX-FF1760-500-G - BOARD DEV VIRTEX 5 FF1760
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -

Chapter 6: SelectIO Resources
244
LVDCI_DV2
A controlled impedance driver with half impedance (source termination) can also provide
drivers with one half of the impedance of the reference resistors. This allows reference
resistors to be twice as large, thus reducing static power consumption through VRN/VRP.
The I/O standards supporting a controlled impedance driver with half impedance are:
LVDCI_DV2_15, LVDCI_DV2_18, and LVDCI_DV2_25.
illustrate a controlled driver with half impedance unidirectional and bidirectional
termination.
To match the drive impedance to Z
reference resistor R must be twice Z
X-Ref Target - Figure 6-33
X-Ref Target - Figure 6-34
There are no drive strength settings for LVDCI drivers. When the driver impedance is one-
half of the VRN/VRP reference resistors, it is indicated by the addition of DV2 to the
attribute name.
Table 6-9
R 0 = ½R VRN = ½R VRP = Z 0
lists the LVCMOS, LVDCI, and LVDCI_DV2 voltage specifications.
R 0 = ½R VRN = ½R VRP = Z 0
Figure 6-33: Controlled Impedance Driver with Half Impedance
Figure 6-34: Controlled Impedance Driver with Half Impedance
LVDCI_DV2
LVDCI_DV2
www.xilinx.com
IOB
IOB
Unidirectional Termination
Bidirectional Termination
0
0
when using a driver with half impedance, the
.
Z 0
Z 0
IOB
IOB
Figure 6-33
R 0 = ½R VRN = ½R VRP = Z 0
LVDCI_DV2
Virtex-5 FPGA User Guide
UG190 (v5.3) May 17, 2010
and
ug190_6_30_022806
LVDCI_DV2
Figure 6-34
ug190_6_31_022806