XC4VFX40-11FFG672I Xilinx Inc, XC4VFX40-11FFG672I Datasheet - Page 33
XC4VFX40-11FFG672I
Manufacturer Part Number
XC4VFX40-11FFG672I
Description
IC FPGA VIRTEX-4 FX 40K 672-FBGA
Manufacturer
Xilinx Inc
Series
Virtex™-4r
Specifications of XC4VFX40-11FFG672I
Number Of Logic Elements/cells
41904
Number Of Labs/clbs
4656
Total Ram Bits
2654208
Number Of I /o
352
Voltage - Supply
1.14 V ~ 1.26 V
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 100°C
Package / Case
672-BBGA, FCBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
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Virtex-4 FPGA User Guide
UG070 (v2.6) December 1, 2008
R
Figure 1-7
BUFGMUX and BUFGMUX_1
BUFGMUX is a clock buffer with two clock inputs, one clock output, and a select line. This
primitive is based on BUFGCTRL with some pins connected to logic High or Low.
Figure 1-8
available for BUFGMUX and BUFGCTRL.
Since the BUFGMUX uses the CE pins as select pins, when using the select, the setup time
requirement must be met. Violating this setup time may result in a glitch.
Switching conditions for BUFGMUX are the same as the CE pins on BUFGCTRL.
Figure 1-9
BUFGCE_1(CE)
BUFGCE_1(O)
illustrates the timing diagram for BUFGCE_1.
illustrates the relationship of BUFGMUX and BUFGCTRL. A LOC constraint is
illustrates the timing diagram for BUFGMUX.
BUFGCE_1(I)
I1
I0
S
I 0
I1
O
S
BUFGMUX
Figure 1-7: BUFGCE_1 Timing Diagram
Figure 1-9: BUFGMUX Timing Diagram
Figure 1-8: BUFGMUX as BUFGCTRL
www.xilinx.com
T
BCCKO_O
O
i hi
T
S
BCCKO_O
begin
i
T
BCCCK_CE
I1
GND
GND
V
V
DD
DD
T
BCCCK_CE
IGNORE1
CE1
S1
I1
I0
S0
CE0
IGNORE0
T
Global Clocking Resources
BCCKO_O
ug070_1_08_071304
ug070_1_07_081904
O
33
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