XC5VSX35T-2FFG665I Xilinx Inc, XC5VSX35T-2FFG665I Datasheet - Page 120
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XC5VSX35T-2FFG665I
Manufacturer Part Number
XC5VSX35T-2FFG665I
Description
IC FPGA VIRTEX-5 35K 665FCBGA
Manufacturer
Xilinx Inc
Series
Virtex™-5 SXTr
Datasheets
1.XC5VLX30-1FFG324C.pdf
(91 pages)
2.XC5VLX30-1FFG324C.pdf
(13 pages)
3.XC5VLX30-1FFG324C.pdf
(385 pages)
Specifications of XC5VSX35T-2FFG665I
Number Of Logic Elements/cells
34816
Number Of Labs/clbs
2720
Total Ram Bits
3096576
Number Of I /o
360
Voltage - Supply
0.95 V ~ 1.05 V
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 100°C
Package / Case
665-BBGA, FCBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
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Chapter 4: Block RAM
Additional Block RAM Features in Virtex-5 Devices
X-Ref Target - Figure 4-5
120
CLK
WE
Optional Output Registers
Independent Read and Write Port Width Selection
EN
Optional
Inverter
Address
DI
The optional output registers improve design performance by eliminating routing delay to
the CLB flip-flops for pipelined operation. An independent clock and clock enable input is
provided for these output registers. As a result the output data registers hold the value
independent of the input register operation.
Each block RAM port has control over data width and address depth (aspect ratio). The
true dual-port block RAM in Virtex-5 FPGAs extends this flexibility to Read and Write
where each individual port can be configured with different data bit widths. For example,
port A can have a 36-bit Read width and a 9-bit Write width, and port B can have a 18-bit
Read width and a 36-bit Write width. See
If the Read port width differs from the Write port width, and is configured in
WRITE_FIRST mode, then DO shows valid new data for all the enabled write bytes. The
DO port outputs the original data stored in memory for all not enabled bytes.
Independent Read and Write port width selection increases the efficiency of implementing
a content addressable memory (CAM) in block RAM. This option is available for all
Virtex-5 FPGA true dual-port RAM port sizes and modes.
Figure 4-5: Block RAM Logic Diagram (One Port Shown)
Register
Strobe
Write
(common to
both ports)
Memory
Array
www.xilinx.com
Read
Strobe
Control Engine
D
Latches
Block RAM Attributes, page
Figure 4-5
Latch
Enable
Q
Configurable Options
shows the optional output register.
D
Register
Virtex-5 FPGA User Guide
UG190 (v5.3) May 17, 2010
Q
128.
UG190_4_06_040606
DO
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