XC5VLX220-1FF1760I Xilinx Inc, XC5VLX220-1FF1760I Datasheet - Page 41

• 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
I/O Clock Buffer - BUFIO
BUFIO Primitive
BUFIO Use Models
The I/O clock buffer (BUFIO) is a clock buffer available in Virtex-5 devices. The BUFIO
drives a dedicated clock net within the I/O column, independent of the global clock
resources. Thus, BUFIOs are ideally suited for source-synchronous data capture
(forwarded/receiver clock distribution). BUFIOs can only be driven by clock capable I/Os
located in the same clock region. In a typical clock region, there are four BUFIOs. Each
BUFIO can drive a single I/O clock network in the same region/bank, as well as the
regional clock buffers (BUFR). BUFIOs cannot drive logic resources (CLB, block RAM,
IODELAY, etc.) because the I/O clock network only reaches the I/O column in the same
bank or clock region.
BUFIO is simply a clock in, clock out buffer. There is a phase delay between input and
output.
is available for BUFIO.
X-Ref Target - Figure 1-18
Table 1-6: BUFIO Port List and Definitions
In
implementation is ideal in source-synchronous applications where a forwarded clock is
used to capture incoming data.
O
I
Port Name
Figure
Figure 1-18
1-19, a BUFIO is used to drive the I/O logic using the clock capable I/O. This
Output
Input
shows the BUFIO.
Type
www.xilinx.com
Figure 1-18: BUFIO Primitive
I
1
1
Table 1-6
Width
BUFIO
ug190_1_18_032306
lists the BUFIO ports. A location constraint
Clock output port
Clock input port
O
Regional Clocking Resources
Definition
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