XC4VFX40-11FFG672I Xilinx Inc, XC4VFX40-11FFG672I Datasheet - Page 34
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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Chapter 1: Clock Resources
34
In
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BUFGMUX_1 is rising edge sensitive and held at High prior to input switch.
illustrates the timing diagram for BUFGMUX_1. A LOC constraint is available for
BUFGMUX and BUFGMUX_1.
In
•
•
•
•
•
•
Figure
Figure
The current clock is I0.
S is activated High.
If I0 is currently High, the multiplexer waits for I0 to deassert Low.
Once I0 is Low, the multiplexer output stays Low until I1 transitions High to Low.
When I1 transitions from High to Low, the output switches to I1.
If the setup/hold times are met, no glitches or short pulses can appear on the output.
The current clock is I0.
S is activated High.
If I0 is currently Low, the multiplexer waits for I0 to be asserted High.
Once I0 is High, the multiplexer output stays High until I1 transitions Low to High.
When I1 transitions from Low to High, the output switches to I1.
If the setup/hold times are met, no glitches or short pulses can appear on the output.
1-9:
1-10:
Figure 1-10: BUFGMUX_1 Timing Diagram
I0
I1
S
O
www.xilinx.com
T
BCCKO_O
T
BCCCK_CE
UG070_1_10_082504
UG070 (v2.6) December 1, 2008
Virtex-4 FPGA User Guide
Figure 1-10
R
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