XC4VFX40-11FFG1152C Xilinx Inc, XC4VFX40-11FFG1152C Datasheet - Page 154
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XC4VFX40-11FFG1152C
Manufacturer Part Number
XC4VFX40-11FFG1152C
Description
IC FPGA VIRTEX-4 FX 40K 1152FBGA
Manufacturer
Xilinx Inc
Series
Virtex™-4r
Specifications of XC4VFX40-11FFG1152C
Number Of Logic Elements/cells
41904
Number Of Labs/clbs
4656
Total Ram Bits
2654208
Number Of I /o
448
Voltage - Supply
1.14 V ~ 1.26 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
1152-BBGA, FCBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
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Chapter 4: Block RAM
FIFO VHDL and Verilog Templates
154
FIFO VHDL Template
The ALMOSTFULL and ALMOSTEMPTY offsets can also be used in unstoppable block
transfer applications to signal that a new block of data can be written or read.
When setting the offset ranges in the design tools, use hexadecimal notation.
VHDL and Verilog templates are available in the Libraries Guide. Also see section
Error Condition and Work-Arounds,” page
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Library UNISIM;
use UNISIM.vcomponents.all;
--
-- FIFO16: Virtex-4 Block RAM Asynchronous FIFO
-- Virtex-4 FPGA User Guide
FIFO16_inst : FIFO16
generic map (
port map (
declaration
<--Cut code below this line and paste into the architecture body-->
declaration
Copy the following two statements and paste them before the
Entity declaration, unless they already exists.
instance
primitives : Xilinx primitives and points to the models that will
Library
ALMOST_EMPTY_OFFSET => X"000", -- Sets the almost empty threshold
Xilinx
FIFO16
ALMOST_FULL_OFFSET => X"000",
DATA_WIDTH => 36, -- Sets data width to 4, 9, 18, or 36
FIRST_WORD_FALL_THROUGH => FALSE)
ALMOSTEMPTY => ALMOSTEMPTY, -- 1-bit almost empty output flag
ALMOSTFULL => ALMOSTFULL,
DO => DO,
DOP => DOP,
EMPTY => EMPTY,
FULL => FULL,
RDCOUNT => RDCOUNT,
RDERR => RDERR,
WRCOUNT => WRCOUNT,
WRERR => WRERR,
DI => DI,
DIP => DIP,
VHDL
code
for
: the architecture body of the design code. The instance
: In addition to adding the instance declaration, a use
: following instance declaration needs to be placed in
: after the "=>" assignment can be changed to properly
: library contains the component declarations for all
: statement for the UNISIM.v components library needs
: To incorporate this function into the design, the
: name (FIFO16_inst) and/or the port declarations
: connect this function to the design. All inputs and
: outputs must be connected.
: to be added before the entity declaration. This
: be used for simulation.
www.xilinx.com
165.
-- 1-bit almost full output flag
-- 32-bit data output
-- 4-bit parity data output
-- 1-bit empty output flag
-- 1-bit full output flag
-- 12-bit read count output
-- 1-bit read error output
-- 12-bit write count output
-- 1-bit write error
-- 32-bit data input
-- 4-bit partity input
-- Sets almost full threshold
-- Sets the FIFO FWFT to TRUE or FALSE
UG070 (v2.6) December 1, 2008
Virtex-4 FPGA User Guide
“FIFO16
R
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