XC5VLX220-1FF1760I Xilinx Inc, XC5VLX220-1FF1760I Datasheet - Page 361

• Manufacturer Part Number: XC5VLX220-1FF1760I
• Description: FPGA Virtex®-5 Family 221184 Cells 65nm (CMOS) Technology 1V 1760-Pin FCBGA
• Manufacturer: Xilinx Inc
• Series: Virtex™-5 LXr

Specifications of XC5VLX220-1FF1760I

• 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
• 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: -40°C ~ 100°C
• Package / Case: 1760-BBGA, FCBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: HW-AFX-FF1760-500-G - BOARD DEV VIRTEX 5 FF1760
• Number Of Gates: -
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Virtex-5 FPGA User Guide
UG190 (v5.3) May 17, 2010
ISERDES Width Expansion
Memory Interface Type
The only valid clocking arrangements for the ISERDES_NODELAY block using the
memory interface type are:
•
•
•
The clocking arrangement using BUFIO and BUFR is shown in
CLKDIV inputs must be nominally phase-aligned. For example, if CLK and CLKDIV in
Figure 8-6
clocking arrangement is a legal BUFIO/BUFR configuration, the clocks would still be out
of phase. No phase relationship between CLK and OCLK is expected. Calibration must be
performed for reliable data transfer from CLK to OCLK domain.
Strobe-Based Memory Interfaces - OCLK
between CLK and OCLK.
X-Ref Target - Figure 8-6
Two ISERDES modules are used to build a serial-to-parallel converter larger than 1:6. In
every I/O tile there are two ISERDES modules; one master and one slave. By connecting
the SHIFTOUT ports of the master ISERDES to the SHIFTIN ports of the slave ISERDES the
serial-to-parallel converter can be expanded to up to 1:10 (DDR) and 1:8 (SDR).
Figure 8-7
master and slave ISERDES modules. Ports Q3 - Q6 are used for the last four bits of the
parallel interface on the slave ISERDES.
For a differential input, the master ISERDES must be on the positive side of the differential
input pair. When the input is not differential, the input buffer associated with the slave
ISERDES is not available and can not be used.
CLK driven by BUFIO or BUFG
OCLK driven by DCM and CLKDIV driven by CLKDV output of same DCM
OCLK driven by PLL and CLKDIV driven by CLKOUT[0:5] of same PLL
Clock
Input
were inverted by the designer at the ISERDES inputs, then although the
illustrates a block diagram of a 1:10 DDR serial-to-parallel converter using the
Figure 8-6: Clocking Arrangement Using BUFIO and BUFR
www.xilinx.com
BUFR ( ÷ X)
BUFIO
Input Serial-to-Parallel Logic Resources (ISERDES)
gives further information about transferring data
ISERDES_NODELAY
CLK
CLKDIV
Figure
High-Speed Clock for
8-6. The CLK and
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