XC2V40-5FGG256C Xilinx Inc, XC2V40-5FGG256C Datasheet - Page 22
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XC2V40-5FGG256C
Manufacturer Part Number
XC2V40-5FGG256C
Description
IC FPGA VIRTEX-II 40K 256-FBGA
Manufacturer
Xilinx Inc
Series
Virtex™-IIr
Datasheet
1.XC2V250-4FGG256C.pdf
(318 pages)
Specifications of XC2V40-5FGG256C
Number Of Labs/clbs
64
Total Ram Bits
73728
Number Of I /o
88
Number Of Gates
40000
Voltage - Supply
1.425 V ~ 1.575 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
256-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Logic Elements/cells
-
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The set and reset functionality of a register or a latch can be
configured as follows:
•
•
•
•
•
•
•
The synchronous reset has precedence over a set, and an
asynchronous clear has precedence over a preset.
Distributed SelectRAM Memory
Each function generator (LUT) can implement a 16 x 1-bit
synchronous RAM resource called a distributed SelectRAM
element. The SelectRAM elements are configurable within
a CLB to implement the following:
•
•
•
•
•
•
•
DS031-2 (v3.5) November 5, 2007
Product Specification
CLK
Figure 17: Register / Latch Configuration in a Slice
CE
SR
BY
BX
No set or reset
Synchronous set
Synchronous reset
Synchronous set and reset
Asynchronous set (preset)
Asynchronous reset (clear)
Asynchronous set and reset (preset and clear)
Single-Port 16 x 8 bit RAM
Single-Port 32 x 4 bit RAM
Single-Port 64 x 2 bit RAM
Single-Port 128 x 1 bit RAM
Dual-Port 16 x 4 bit RAM
Dual-Port 32 x 2 bit RAM
Dual-Port 64 x 1 bit RAM
R
DX
DY
D
CE
CK
D
CE
CK
SR REV
SR REV
FFY
FFX
FF
LATCH
FF
LATCH
Q
Q
Attribute
Attribute
Reset Type
DS031_22_110600
INIT1
INIT0
SRHIGH
SRLOW
INIT1
INIT0
SRHIGH
SRLOW
SYNC
ASYNC
YQ
XQ
www.xilinx.com
Distributed SelectRAM memory modules are synchronous
(write) resources. The combinatorial read access time is
extremely fast, while the synchronous write simplifies
high-speed designs. A synchronous read can be imple-
mented with a storage element in the same slice. The dis-
tributed SelectRAM memory and the storage element share
the same clock input. A Write Enable (WE) input is active
High, and is driven by the SR input.
Table 9
each distributed SelectRAM configuration.
Table 9: Distributed SelectRAM Configurations
For single-port configurations, distributed SelectRAM mem-
ory has one address port for synchronous writes and asyn-
chronous reads.
For dual-port configurations, distributed SelectRAM mem-
ory has one port for synchronous writes and asynchronous
reads and another port for asynchronous reads. The func-
tion generator (LUT) has separated read address inputs
(A1, A2, A3, A4) and write address inputs (WG1/WF1,
WG2/WF2, WG3/WF3, WG4/WF4).
In single-port mode, read and write addresses share the
same address bus. In dual-port mode, one function genera-
tor (R/W port) is connected with shared read and write
addresses. The second function generator has the A inputs
(read) connected to the second read-only port address and
the W inputs (write) shared with the first read/write port
address.
Notes:
1. S = single-port configuration; D = dual-port configuration
Virtex-II Platform FPGAs: Functional Description
shows the number of LUTs (2 per slice) occupied by
128 x 1S
16 x 1S
16 x 1D
32 x 1S
32 x 1D
64 x 1S
64 x 1D
RAM
Number of LUTs
1
2
2
4
4
8
8
Module 2 of 4
14
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