DS022-1 Datasheet, PDF (3/5 Pages) Xilinx, Inc – Field Programmable Gate Arrays

R
Virtex™-E 1.8 V Field Programmable Gate Arrays
resources. The abundance of routing resources permits the
Virtex-E family to accommodate even the largest and most
complex designs.
Virtex-E FPGAs are SRAM-based, and are customized by
loading configuration data into internal memory cells. Con-
figuration data can be read from an external SPROM (mas-
ter serial mode), or can be written into the FPGA
(SelectMAP™, slave serial, and JTAG modes).
The standard Xilinx Foundation Series™ and Alliance
Series™ Development systems deliver complete design
support for Virtex-E, covering every aspect from behavioral
and schematic entry, through simulation, automatic design
translation and implementation, to the creation and down-
loading of a configuration bit stream.
Higher Performance
Virtex-E devices provide better performance than previous
generations of FPGAs. Designs can achieve synchronous
system clock rates up to 240 MHz including I/O or 622 Mb/s
using Source Synchronous data transmission architech-
tures. Virtex-E I/Os comply fully with 3.3 V PCI specifica-
tions, and interfaces can be implemented that operate at
33 MHz or 66 MHz.
While performance is design-dependent, many designs
operate internally at speeds in excess of 133 MHz and can
achieve over 311 MHz. Table 2 shows performance data for
representative circuits, using worst-case timing parameters.
Table 2: Performance for Common Circuit Functions
Function
Bits
Virtex-E (-7)
Register-to-Register
Adder
16
4.3 ns
64
6.3 ns
Pipelined Multiplier
8x8
16 x 16
4.4 ns
5.1 ns
Address Decoder
16
64
3.8 ns
5.5 ns
16:1 Multiplexer
4.6 ns
Parity Tree
9
3.5 ns
18
4.3 ns
36
5.9 ns
Chip-to-Chip
HSTL Class IV
LVTTL,16mA, fast slew
LVDS
LVPECL
Virtex-E Device/Package Combinations and Maximum I/O
Table 3: Virtex-E Family Maximum User I/O by Device/Package (Excluding Dedicated Clock Pins)
XCV
50E
XCV
100E
XCV
200E
XCV
300E
XCV
400E
XCV XCV XCV XCV XCV
600E 1000E 1600E 2000E 2600E
CS144 94
94
94
PQ240 158
158
158
158
158
HQ240
158
158
BG352
196
260
260
BG432
316
316
316
BG560
404
404
404
404
404
FG256 176
176
176
176
FG456
284
312
FG676
404
444
FG680
512
512
512
512
FG860
660
660
660
FG900
512
660
700
FG1156
660
724
804
804
XCV
3200E
804
DS022-1 (v2.2) November 9, 2001
Preliminary Product Specification
www.xilinx.com
1-800-255-7778
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