XC5VLX30-2FF676C Xilinx Inc, XC5VLX30-2FF676C Datasheet - Page 113
![IC FPGA VIRTEX-5 30K 676FBGA](/photos/6/73/67306/xilinx-_1136-fbga_sml.jpg)
XC5VLX30-2FF676C
Manufacturer Part Number
XC5VLX30-2FF676C
Description
IC FPGA VIRTEX-5 30K 676FBGA
Manufacturer
Xilinx Inc
Series
Virtex™-5 LXr
Datasheets
1.XC5VLX30-1FFG324C.pdf
(91 pages)
2.XC5VLX30-1FFG324C.pdf
(13 pages)
3.XC5VLX30-1FFG324C.pdf
(385 pages)
Specifications of XC5VLX30-2FF676C
Number Of Logic Elements/cells
30720
Number Of Labs/clbs
2400
Total Ram Bits
1179648
Number Of I /o
400
Voltage - Supply
0.95 V ~ 1.05 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
676-BBGA, FCBGA
For Use With
HW-AFX-FF676-500-G - BOARD DEV VIRTEX 5 FF676
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Number Of Gates
-
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Block RAM
Block RAM Summary
Virtex-5 FPGA User Guide
UG190 (v5.3) May 17, 2010
The block RAM in Virtex-5 FPGAs stores up to 36K bits of data and can be configured as
either two independent 18 Kb RAMs, or one 36 Kb RAM. Each 36 Kb block RAM can be
configured as a 64K x 1 (when cascaded with an adjacent 36 Kb block RAM), 32K x 1,
16K x 2, 8K x 4, 4K x 9, 2K x 18, or 1K x 36 memory. Each 18 Kb block RAM can be
configured as a 16K x 1, 8K x2 , 4K x 4, 2K x 9, or 1K x 18 memory.
Similar to the Virtex-4 FPGA block RAMs, Write and Read are synchronous operations; the
two ports are symmetrical and totally independent, sharing only the stored data. Each port
can be configured in one of the available widths, independent of the other port. In
addition, the read port width can be different from the write port width for each port. The
memory content can be initialized or cleared by the configuration bitstream. During a
write operation the memory can be set to have the data output either remain unchanged,
reflect the new data being written or the previous data now being overwritten.
Virtex-5 FPGA block RAM enhancements include:
•
•
•
•
•
•
•
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Virtex-5 FPGA block RAM features:
•
•
Increased memory storage capability per block. Each block RAM can store up to 36K
bits of data.
Support of two independent 18K blocks, or a single 36K block RAM.
Each 36K block RAM can be set to simple dual-port mode, doubling data width of the
block RAM to 72 bits. The 18K block RAM can also be set to simple dual-port mode,
doubling data width to 36 bits. Simple dual-port mode is defined as having one read-
only port and one write-only port with independent clocks.
Two adjacent block RAMs can be combined to one deeper 64K x 1 memory without
any external logic.
One 64-bit Error Correction Coding block is provided per 36 Kb block RAM or 36 Kb
FIFO. Separate encode/decode functionality is available.
Synchronous Set/Reset of the outputs to an initial value is available for both the latch
and register modes of the block RAM output.
An attribute to configure the block RAM as a synchronous FIFO to eliminate flag
latency uncertainty.
The Virtex-5 FIFO does not have FULL flag assertion latency.
18, 36, or 72-bit wide ports can have an individual write enable per byte. This feature
is popular for interfacing to an on-chip microprocessor.
Each block RAM contains optional address sequencing and control circuitry to
operate as a built-in multirate FIFO memory. In Virtex-5 architecture, the block RAM
can be configured as an 18Kb or 36Kb FIFO.
www.xilinx.com
Chapter 4
113
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