XC4VFX20-10FFG672C Xilinx Inc, XC4VFX20-10FFG672C Datasheet - Page 48

• Manufacturer Part Number: XC4VFX20-10FFG672C
• Description: IC FPGA VIRTEX-4 FX 20K 672-FBGA
• Manufacturer: Xilinx Inc
• Series: Virtex™-4r

Specifications of XC4VFX20-10FFG672C

• Total Ram Bits: 1253376
• Number Of Logic Elements/cells: 19224
• Number Of Labs/clbs: 2136
• 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
• No. Of Logic Blocks: 19224
• No. Of Macrocells: 19224
• No. Of Speed Grades: 10
• No. Of I/o's: 320
• Clock Management: DCM
• I/o Supply Voltage: 3.45V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: HW-V4-ML405-UNI-G - EVALUATION PLATFORM VIRTEX-4
• Number Of Gates: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Chapter 1: Clock Resources
48
BUFGCE and BUFGCE_1 VHDL and Verilog Templates
Verilog Template
Declaring Constraints in UCF File
VHDL Template
The following examples illustrate the instantiation of the BUFGCE module in VHDL and
Verilog. The instantiation of BUFGCE_1 is exactly the same as BUFGCE with exception of
the primitive name.
//Example BUFG module declaration
module BUFG (O, I);
endmodule;
//Example BUFG instantiation
BUFG U_BUFG (
.O(user_o),
.I0(user_i)
);
// Declaring constraints in Verilog
// synthesis attribute LOC of U_BUFG is "BUFGCTRL_X#Y#";
// where # is valid integer locations of BUFGCTRL
INST "U_BUFG" LOC = BUFGCTRL_X#Y#;
where # is valid integer locations of BUFGCTRL
--Example BUFGCE declaration
component BUFGCE
port(
end component;
--Example BUFGCE instantiation
U_BUFGCE : BUFGCE
Port map (
--Declaring constraints in VHDL file
attribute LOC : string;
attribute LOC of U_BUFGCE: label is "BUFGCTRL_X#Y#";
--where # is valid integer locations of BUFGCTRL
output O;
input I;
O: out std_ulogic;
CE: in
I: in
);
O => user_o,
CE => user_ce,
I => user_i
);
std_ulogic
std_ulogic;
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UG070 (v2.6) December 1, 2008
Virtex-4 FPGA User Guide
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