XC2VP7-5FFG896I

Manufacturer Part NumberXC2VP7-5FFG896I
DescriptionIC FPGA VIRTEX-II PRO 896-FBGA
ManufacturerXilinx Inc
SeriesVirtex™-II Pro
XC2VP7-5FFG896I datasheet
 


Specifications of XC2VP7-5FFG896I

Number Of Logic Elements/cells11088Number Of Labs/clbs1232
Total Ram Bits811008Number Of I /o396
Voltage - Supply1.425 V ~ 1.575 VMounting TypeSurface Mount
Operating Temperature-40°C ~ 100°CPackage / Case896-BBGA, FCBGA
Lead Free Status / RoHS StatusLead free / RoHS CompliantNumber Of Gates-
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R
The DCM has the following general control signals:
RST input
pin:
resets the entire DCM
LOCKED output pin: asserted High when all enabled
DCM circuits have locked.
STATUS output pins (active High): shown in
Table 27: DCM Status Pins
Status Pin
0
Phase Shift Overflow
1
2
3
4
5
6
7
Clock De-skew
The DCM de-skews the output clocks relative to the input
clock by automatically adjusting a digital delay line. Addi-
tional delay is introduced so that clock edges arrive at inter-
nal registers and block RAMs simultaneously with the clock
edges arriving at the input clock pad. Alternatively, external
clocks, which are also de-skewed relative to the input clock,
can be generated for board-level routing. All DCM output
clocks are phase-aligned to CLK0 and, therefore, are also
phase-aligned to the input clock.
To achieve clock de-skew, connect the CLKFB input to
CLK0. Note that CLKFB must always be connected, unless
only the CLKFX or CLKFX180 outputs are used and
de-skew is not required.
Frequency Synthesis
The DCM provides flexible methods for generating new
clock frequencies. Each method has a different operating
frequency range and different AC characteristics. The
CLK2X and CLK2X180 outputs double the clock frequency.
The CLKDV output creates divided output clocks with divi-
sion options of 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5,
8, 9, 10, 11, 12, 13, 14, 15, and 16.
The CLKFX and CLKFX180 outputs can be used to pro-
duce clocks at the following frequency:
(
)
FREQ
=
M D
CLKFX
where M and D are two integers. Specifications for M and D
are
provided
under
DCM
Timing
Virtex-II Pro and Virtex-II Pro X Platform FPGAs: DC and
Switching
Characteristics. By default, M = 4 and D = 1,
DS083 (v4.7) November 5, 2007
Product Specification
Virtex-II Pro and Virtex-II Pro X Platform FPGAs: Functional Description
which results in a clock output frequency four times faster
than the clock input frequency (CLKIN).
CLK2X180 is phase shifted 180 degrees relative to CLK2X.
CLKFX180 is phase shifted 180 degrees relative to CLKFX.
All frequency synthesis outputs automatically have 50/50
Table
27.
duty cycles, with the exception of the CLKDV output when
performing a non-integer divide in high-frequency mode.
See
Table 28
Function
Note that CLK2X and CLK2X180 are not available in
high-frequency mode.
CLKIN Stopped
Table 28: CLKDV Duty Cycle for Non-integer Divides
CLKFX Stopped
CLKDV_DIVIDE
N/A
N/A
N/A
N/A
N/A
Phase Shifting
The DCM provides additional control over clock skew
through either coarse or fine-grained phase shifting. The
CLK0, CLK90, CLK180, and CLK270 outputs are each
phase shifted by ¼ of the input clock period relative to each
other, providing coarse phase control. Note that CLK90 and
CLK270 are not available in high-frequency mode.
Fine-phase adjustment affects all nine DCM output clocks.
When activated, the phase shift between the rising edges of
CLKIN and CLKFB is a specified fraction of the input clock
period.
In variable mode, the
dynamically incremented or decremented as determined by
PSINCDEC synchronously to PSCLK, when the PSEN
input is active.
shifting. For more information on DCM features, see the
Virtex-II Pro Platform FPGA User Guide.
Table 29
variable mode.
Table 29: Fine Phase Shifting Control Pins
Control Pin
FREQ
CLKIN
PSINCDEC
PSEN
Parameters
in
PSCLK
PSDONE
www.xilinx.com
for more details.
Duty Cycle
1.5
1/ 3
2.5
2 / 5
3.5
3 / 7
4.5
4 / 9
5.5
5 / 11
6.5
6 / 13
7.5
7 / 15
value can also be
PHASE_SHIFT
Figure 63
illustrates the effects of fine-phase
lists fine-phase shifting control pins, when used in
Direction
Function
In
Increment or decrement
In
Enable ± phase shift
In
Clock for phase shift
Out
Active when completed
Module 2 of 4
52