XC5VLX50-2FF676I Xilinx Inc, XC5VLX50-2FF676I Datasheet - Page 70
![FPGA Virtex®-5 Family 46080 Cells 65nm (CMOS) Technology 1V 676-Pin FCBGA](/photos/6/73/67306/xilinx-_1136-fbga_sml.jpg)
XC5VLX50-2FF676I
Manufacturer Part Number
XC5VLX50-2FF676I
Description
FPGA Virtex®-5 Family 46080 Cells 65nm (CMOS) Technology 1V 676-Pin FCBGA
Manufacturer
Xilinx Inc
Series
Virtex™-5 LXr
Datasheets
1.XC5VLX30-1FFG324C.pdf
(91 pages)
2.XC5VLX30-1FFG324C.pdf
(13 pages)
3.XC5VLX30-1FFG324C.pdf
(385 pages)
Specifications of XC5VLX50-2FF676I
Package
676FCBGA
Family Name
Virtex®-5
Device Logic Units
46080
Typical Operating Supply Voltage
1 V
Maximum Number Of User I/os
440
Ram Bits
1769472
Number Of Logic Elements/cells
46080
Number Of Labs/clbs
3600
Total Ram Bits
1769472
Number Of I /o
440
Voltage - Supply
0.95 V ~ 1.05 V
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 100°C
Package / Case
676-BBGA, FCBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With
HW-V5-ML561-UNI-G - EVALUATION PLATFORM VIRTEX-5HW-V5-ML550-UNI-G - EVALUATION PLATFORM VIRTEX-5HW-V5-ML521-UNI-G - EVALUATION PLATFORM VIRTEX-5HW-AFX-FF676-500-G - BOARD DEV VIRTEX 5 FF676HW-V5GBE-DK-UNI-G - KIT DEV V5 LXT GIGABIT ETHERNET122-1508 - EVALUATION PLATFORM VIRTEX-5
Number Of Gates
-
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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Chapter 2: Clock Management Technology
X-Ref Target - Figure 2-5
70
For frequency ≥ 100 MHz (period ≤ 10 ns)
CLK0 PHASE_SHIFT = 0 - 255 covers the
whole range of period.
For frequency between 50 - 100 MHz
(period 10 - 20 ns). At 50 MHz, use
CLK0 PHASE_SHIFT= 0 - 127 for the
first 10 ns.
Use CLK180 with PHASE_SHIFT= 0 - 127
for the next 10 ns.
For frequency between 25 - 50 MHz
(period 20 - 40 ns). At 25 MHz, use
CLK0 PHASE_SHIFT= 0 - 63 for the
first 10 ns.
Use CLK90 with PHASE_SHIFT= 0 - 63
for the next 10 ns.
Use CLK180 with PHASE_SHIFT= 0 - 63
for the next 10 ns.
Use CLK270 with PHASE_SHIFT= 0 - 63
for the last 10 ns.
•
•
•
If the phase shift is limited by the FINE_SHIFT_RANGE, use the coarse-grained phase
shift to extend the phase-shift range or set DCM_PERFORMANCE_MODE attribute to
MAX_RANGE to increase the FINE_SHIFT_RANGE.
CLK180, and CLK270 outputs assuming FINE_SHIFT_RANGE = 10 ns.
In variable mode, the phase-shift factor is changed by activating PSEN for one period of
PSCLK. At the PSCLK clock cycle where PSEN is activated, the level of PSINCDEC input
determines whether the phase-shift increases or decreases. A High on PSINCDEC
increases the phase shift, and a Low decreases the phase shift.
After the deskew circuit increments or decrements, the signal PSDONE is asserted High
for a single PSCLK cycle. This allows the next change to be performed.
The user interface and the physical implementation are different. The user interface
describes the phase shift as a fraction of the clock period (N/256). The physical
implementation adds the appropriate number of buffer stages (each DCM_TAP) to the
clock delay. The DCM_TAP granularity limits the phase resolution at higher clock
frequencies.
All phase-shift modes, with the exception of DIRECT mode, are temperature and voltage
adjusted. Hence, a V
DIRECT phase shift is not temperature or voltage adjusted since it directly controls
If PERIODCLKIN = FINE_SHIFT_RANGE, then the PHASE_SHIFT in variable-
positive mode is limited to +255. In fixed and variable-center mode the
PHASE_SHIFT is limited to ±255.
If PERIODCLKIN ≤ FINE_SHIFT_RANGE, then the PHASE_SHIFT in variable-
positive mode is limited to +255. In fixed and variable-center mode the
PHASE_SHIFT is limited to ±255.
For all previously described cases, the direct mode is always limited to +1023.
Figure 2-5: Fixed Phase-Shift Examples
CLK180(50 MHz)
CLK180(25 MHz)
CLK270(25 MHz)
CLK0(100 MHz)
CLK90(25 MHz)
CLK0(50 MHz)
CLK0(25 MHz)
CC
or temperature adjustment does not change the phase shift. The
www.xilinx.com
10 ns
10 ns
Figure 2-5
10 ns
illustrates using CLK90,
Virtex-5 FPGA User Guide
UG190 (v5.3) May 17, 2010
10 ns
ug0190_2_05_032506
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