XC4VFX20-11FFG672C Xilinx Inc, XC4VFX20-11FFG672C Datasheet - Page 52

• Manufacturer Part Number: XC4VFX20-11FFG672C
• Description: IC FPGA VIRTEX-4 FX 20K 672-FBGA
• Manufacturer: Xilinx Inc
• Series: Virtex™-4r

Specifications of XC4VFX20-11FFG672C

• Number Of Logic Elements/cells: 19224
• Number Of Labs/clbs: 2136
• Total Ram Bits: 1253376
• Number Of I /o: 320
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 672-BBGA, FCBGA
• For Use With: HW-V4-ML405-UNI-G - EVALUATION PLATFORM VIRTEX-4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -

Chapter 1: Clock Resources
52
BUFIO VHDL and Verilog Templates
VHDL Template
Verilog Template
Declaring Constraints in UCF File
The following examples illustrate the instantiation of the BUFIO module in VHDL and
Verilog.
--Example BUFIO declaration
component BUFIO
port(
end component;
--Example BUFIO instantiation
U_BUFIO : BUFIO
Port map (
--Declaring constraints in VHDL file
attribute LOC : string;
attribute LOC of U_BUFIO: label is "BUFIO_X#Y#";
--where # is valid integer locations of BUFIO
//Example BUFIO module declaration
module BUFIO (O, I);
endmodule;
//Example BUFIO instantiation
BUFIO U_BUFIO (
.O(user_o),
.I(user_i)
);
// Declaring constraints in Verilog
// synthesis attribute LOC of U_BUFIO is "BUFIO_X#Y#";
// where # is valid integer locations of BUFIO
INST "U_BUFIO" LOC = BUFIO_X#Y#;
where # is valid integer locations of BUFIO
O: out std_ulogic;
I: in
);
O => user_o,
I0 => user_i
);
output O;
input I;
std_ulogic
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UG070 (v2.6) December 1, 2008
Virtex-4 FPGA User Guide
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