XC5VFX30T-1FFG665CES Xilinx Inc, XC5VFX30T-1FFG665CES Datasheet - Page 119
![IC FPGA VIRTEX5FX 30K 665FCBGA](/photos/6/73/67306/xilinx-_1136-fbga_sml.jpg)
XC5VFX30T-1FFG665CES
Manufacturer Part Number
XC5VFX30T-1FFG665CES
Description
IC FPGA VIRTEX5FX 30K 665FCBGA
Manufacturer
Xilinx Inc
Series
Virtex™-5 FXTr
Datasheets
1.XC5VLX30-1FFG324C.pdf
(91 pages)
2.XC5VLX30-1FFG324C.pdf
(13 pages)
3.XC5VLX30-1FFG324C.pdf
(385 pages)
Specifications of XC5VFX30T-1FFG665CES
Number Of Logic Elements/cells
32768
Number Of Labs/clbs
2560
Total Ram Bits
2506752
Number Of I /o
360
Voltage - Supply
0.95 V ~ 1.05 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
665-BBGA, FCBGA
Lead Free Status / RoHS Status
Lead free / RoHS non-compliant
Number Of Gates
-
Available stocks
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Company:
Part Number:
XC5VFX30T-1FFG665CES
Manufacturer:
Xilinx Inc
Quantity:
10 000
- XC5VLX30-1FFG324C PDF datasheet
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Virtex-5 FPGA User Guide
UG190 (v5.3) May 17, 2010
Conflict Avoidance
Asynchronous Clocking
Synchronous Clocking
X-Ref Target - Figure 4-4
Virtex-5 FPGA block RAM memory is a true dual-port RAM where both ports can access
any memory location at any time. When accessing the same memory location from both
ports, the user must, however, observe certain restrictions. There are two fundamentally
different situations: The two ports either have a common clock (synchronous clocking), or
the clock frequency and phase is different for the two ports (asynchronous clocking).
Asynchronous clocking is the more general case, where the active edges of both clocks do
not occur simultaneously:
•
•
Synchronous clocking is the special case, where the active edges of both port clocks occur
simultaneously:
•
•
•
There are no timing constraints when both ports perform a read operation.
When one port performs a write operation, the other port must not read- or write-
access the same memory location. The simulation model will produce an error if this
condition is violated. If this restriction is ignored, a read or write operation will
produce unpredictable results. There is, however, no risk of physical damage to the
device. If a read and write operation is performed, then the write will store valid data
at the write location.
There are no timing constraints when both ports perform a read operation.
When one port performs a write operation, the other port must not write into the
same location, unless both ports write identical data.
When one port performs a write operation, the write operation succeeds; the other
port can reliably read data from the same location if the write port is in READ_FIRST
mode. DATA_OUT on both ports will then reflect the previously stored data.
If the write port is in either WRITE_FIRST or in NO_CHANGE mode, then the DATA-
OUT on the read port would become invalid (unreliable). The mode setting of the
read-port does not affect this operation.
ADDR
CLK
WE
DO
EN
DI
Disable
0000
Figure 4-4: NO_CHANGE Mode Waveforms
XXXX
www.xilinx.com
aa
Read
MEM(aa)
Synchronous Dual-Port and Single-Port RAMs
1111
bb
MEM(bb)=1111
Write
2222
cc
MEM(cc)=2222
Write
dd
ug190_4_05_032206
XXXX
Read
MEM(dd)
119
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