XC5VSX35T-1FFG665CES Xilinx Inc, XC5VSX35T-1FFG665CES Datasheet - Page 224
![IC FPGA VIRTEX-5 ES 35K 665FCBGA](/photos/6/73/67306/xilinx-_1136-fbga_sml.jpg)
XC5VSX35T-1FFG665CES
Manufacturer Part Number
XC5VSX35T-1FFG665CES
Description
IC FPGA VIRTEX-5 ES 35K 665FCBGA
Manufacturer
Xilinx Inc
Series
Virtex™-5 SXTr
Datasheets
1.XC5VLX30-1FFG324C.pdf
(91 pages)
2.XC5VLX30-1FFG324C.pdf
(13 pages)
3.XC5VLX30-1FFG324C.pdf
(385 pages)
Specifications of XC5VSX35T-1FFG665CES
Number Of Logic Elements/cells
34816
Number Of Labs/clbs
2720
Total Ram Bits
3096576
Number Of I /o
360
Voltage - Supply
0.95 V ~ 1.05 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
665-BBGA, FCBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
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Part Number:
XC5VSX35T-1FFG665CES
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Chapter 6: SelectIO Resources
224
Controlled Impedance Driver (Source Termination)
Controlled Impedance Driver with Half Impedance (Source Termination)
1.
2.
Alternatively, bidirectional point-to-point lines can use controlled-impedance drivers
(with 3-state buffers) on both ends.
Some I/O standards, such as LVCMOS, must have a drive impedance matching the
characteristic impedance of the driven line. DCI can provide controlled impedance output
drivers to eliminate reflections without an external source termination. The impedance is
set by the external reference resistors with resistance equal to the trace impedance.
The DCI I/O standards supporting the controlled impedance driver are: LVDCI_15,
LVDCI_18, LVDCI_25, LVDCI_33, HSLVDCI_15, HSLVDCI_18, HSLVDCI_25, and
HSLVDCI_33.
X-Ref Target - Figure 6-6
DCI also provides drivers with one half of the impedance of the reference resistors. This
doubling of the reference resistor value reduces the static power consumption through
these resistors by a factor of half. The DCI I/O standards supporting controlled impedance
drivers with half-impedance are LVDCI_DV2_15, LVDCI_DV2_18, and LVDCI_DV2_25.
Figure 6-7
reference resistors R must be 2 × Z
X-Ref Target - Figure 6-7
Driver with termination to V
Driver with termination to V
illustrates a controlled driver with half impedance inside a Virtex-5 device. The
Figure 6-7: Controlled Impedance Driver with Half Impedance
Figure 6-6
Figure 6-6: Controlled Impedance Driver
illustrates a controlled impedance driver in a Virtex-5 device.
www.xilinx.com
Virtex-5 DCI
CCO
CCO
Virtex-5 DCI
0
R/2
R
in order to match the impedance of Z
/2 (Split Termination, Thevenin equivalent)
(Single Termination)
IOB
IOB
UG190_6_04_012706
UG190_6_05_021206
Z
Z
0
0
Virtex-5 FPGA User Guide
UG190 (v5.3) May 17, 2010
0
.
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