XC4VFX20-11FFG672C Xilinx Inc, XC4VFX20-11FFG672C Datasheet - Page 129
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XC4VFX20-11FFG672C
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
-
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Virtex-4 FPGA User Guide
UG070 (v2.6) December 1, 2008
Optional Output Register On/Off Switch - DO[A|B]_REG
Clock Inversion at Output Register Switch - INVERT_CLK_DO[A|B]_REG
Extended Mode Address Determinant - RAM_EXTENSION_[A|B]
Read Width - READ_WIDTH_[A|B]
Write Width - WRITE_WIDTH_[A|B]
Write Mode - WRITE_MODE_[A|B]
Block RAM Location Constraints
R
Table 4-5: Port Width Values
This attribute sets the number of pipeline register at A/B output of RAMB16. The valid
values are 0 (default) or 1.
When set to TRUE, the clock input to the pipeline register at A/B output of RAMB16 is
inverted. The default value is FALSE.
This attribute determines whether the block RAM of interest has its A/B port as
UPPER/LOWER address when using the cascade mode. Refer to the
RAM”
NONE.
This attribute determines the A/B read port width of the block RAM. The valid values are:
0 (default), 1, 2, 4, 9, 18, and 36.
This attribute determines the A/B write port width of the block RAM. The valid values are:
0 (default), 1, 2, 4, 9, 18, and 36.
This attribute determines the write mode of the A/B input ports. The possible values are
WRITE_FIRST (default), READ_FIRST, and NO_CHANGE. Additional information on the
write modes is in the
Block RAM instances can have LOC properties attached to them to constrain placement.
Block RAM placement locations differ from the convention used for naming CLB locations,
allowing LOC properties to transfer easily from array to array.
Port Data Width
section. When the block RAM is not used in cascade mode, the default value is
18
36
1
2
4
9
“Operating Modes”
www.xilinx.com
DOP Bus
<1:0>
<3:0>
NA
NA
NA
<0>
section.
DO Bus
<15:0>
<31:0>
<1:0>
<3:0>
<7:0>
<0>
Block RAM Attributes
“Cascadable Block
INIT / SRVAL
(4 + 32) = 36
(2 + 16) = 18
(1 + 8) = 9
1
2
4
129
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