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AX2000 датащи(PDF) 74 Page - Microsemi Corporation

номер детали AX2000
подробное описание детали  Axcelerator Family FPGAs
PDF  262 Pages
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производитель  MICROSEMI [Microsemi Corporation]
домашняя страница  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

AX2000 датащи(HTML) 74 Page - Microsemi Corporation

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Detailed Specifications
2- 60
R e v i sio n 1 8
Buffer Module
Introduction
An additional resource inside each SuperCluster is the Buffer (B) module (Figure 1-4 on page 1-3). When
a fanout constraint is applied to a design, the synthesis tool inserts buffers as needed. The buffer module
has been added to the AX architecture to avoid logic duplication resulting from the hard fanout
constraints. The router utilizes this logic resource to save area and reduce loading and delays on
medium-to-high-fanout nets.
Timing Models and Waveforms
Timing Characteristics
Figure 2-33 • Buffer Module Timing Model
Figure 2-34 • Buffer Module Waveform
Table 2-64 • Buffer Module
Worst-Case Commercial Conditions VCCA = 1.425 V, VCCI = 3.0 V, TJ = 70°C
–2 Speed
–1 Speed
Std Speed
Parameter
Description
Min.
Max.
Min.
Max.
Min.
Max.
Units
Buffer Module Propagation Delays
tBFPD
Any input to output Y
0.12
0.14
0.16
ns
IN
OUT
OUT
GND
50%
50%
50%
50%
GND
IN
VCCA
VCCA
tBFPD
tBFPD



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