XC4VFX20-10FFG672C Xilinx Inc, XC4VFX20-10FFG672C Datasheet - Page 396
![IC FPGA VIRTEX-4 FX 20K 672-FBGA](/photos/19/4/190420/4579314_sml.jpg)
XC4VFX20-10FFG672C
Manufacturer Part Number
XC4VFX20-10FFG672C
Description
IC FPGA VIRTEX-4 FX 20K 672-FBGA
Manufacturer
Xilinx Inc
Series
Virtex™-4r
Datasheets
1.XC4VFX12-10FFG668C.pdf
(58 pages)
2.XC4VFX12-10FFG668C.pdf
(9 pages)
3.XC4VFX12-10FFG668C.pdf
(406 pages)
Specifications of XC4VFX20-10FFG672C
Total Ram Bits
1253376
Number Of Logic Elements/cells
19224
Number Of Labs/clbs
2136
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
No. Of Logic Blocks
19224
No. Of Macrocells
19224
No. Of Speed Grades
10
No. Of I/o's
320
Clock Management
DCM
I/o Supply Voltage
3.45V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
HW-V4-ML405-UNI-G - EVALUATION PLATFORM VIRTEX-4
Number Of Gates
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
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Chapter 8: Advanced SelectIO Logic Resources
396
Timing Characteristics of 4:1 DDR 3-State Controller Serialization
Clock Event 3
The data bit A appears at OQ four CLK cycles after ABCDEFGH is sampled into the
OSERDES. This latency is consistent
OSERDES in 8:1 DDR mode is four CLK cycles.
The second word IJKLMNOP is sampled into the master and slave OSERDES from the D1–
D6 and D3–D4 inputs, respectively.
Clock Event 4
Between Clock Events 3 and 4, the entire word ABCDEFGH is transmitted serially on OQ,
a total of eight bits transmitted in one CLKDIV cycle.
The data bit I appears at OQ four CLK cycles after IJKLMNOP is sampled into the
OSERDES. This latency is consistent with
OSERDES in 8:1 DDR mode is four CLK cycles.
The operation of the 3-State Controller is illustrated in
DDR case shown in the context of a bidirectional system in which the IOB must be
frequently 3-stated.
Master.D1
Master.D2
Master.D3
Master.D4
Master.D5
Master.D6
Slave.D3
Slave.D4
CLKDIV
CLK
OQ
Figure 8-19: OSERDES Data Flow and Latency in 8:1 DDR Mode
Event 1
Clock
www.xilinx.com
G
A
B
C
D
E
F
H
Event 2
Clock
withTable
Table
8-11, which states that the latency of an
8-11, which states that the latency of an
Figure
M
N
O
K
P
J
L
I
Event 3
Clock
UG070 (v2.6) December 1, 2008
A B C D E F G H I
8-20. The example is a 4:1
Virtex-4 FPGA User Guide
UG070_c8_26_032507
Event 4
Clock
R
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