XC5VLX220-2FFG1760C Xilinx Inc, XC5VLX220-2FFG1760C Datasheet - Page 82

• 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 2: Clock Management Technology
82
It is also possible to use the DCM to drive a PLL. This setup reduces the overall jitter of
both the source clock and the DCM clock output. In this case, only up to two of the DCM
output clocks can drive the PLL. Therefore, only up to two DCM clocks can access the PLL
and benefit from the reduced jitter.
Figure 2-15
illustrates the direct connection between DCM and PLL within a CMT. Only one DCM
output can drive PLL using the direct connection within a CMT without routing through a
global buffer (BUFG). The DCM and PLL can be within the same or different CMTs.
Figure 2-16
between the DCM clocks driving the PLL input clocks. The DCM and PLL can be within
the same or different CMTs. Refer to
information on PLLs.
X-Ref Target - Figure 2-15
and
illustrates two DCMs driving a PLL. In this case, BUFG must also be inserted
Figure 2-15: Direct Connection between DCM and PLL
Figure 2-16
IBUFG
www.xilinx.com
illustrate two scenarios of the DCM driving a PLL.
CLKIN1
CLKFBIN
RST
CLKIN
CLKFBIN
RST
Chapter 3, Phase-Locked Loops (PLLs)
DCM
PLL
CLKFBOUT
CLKFX180
CLK2X180
CLKOUT0
CLKOUT1
CLKOUT2
CLKOUT3
CLKOUT4
CLKOUT5
CLK180
CLK270
CLKDV
CLK2X
CLKFX
CLK90
CLK0
ug190_2_16_040906
BUFG
BUFG
Virtex-5 FPGA User Guide
UG190 (v5.3) May 17, 2010
for more
Figure 2-15