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EP2C8AT324I7N Datasheet(PDF) 48 Page - Altera Corporation

Part No. EP2C8AT324I7N
Description  Section I. Cyclone II Device Family Data Sheet
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Manufacturer  ALTERA [Altera Corporation]
Direct Link  http://www.altera.com
Logo ALTERA - Altera Corporation

EP2C8AT324I7N Datasheet(HTML) 48 Page - Altera Corporation

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Altera Corporation
Cyclone II Device Handbook, Volume 1
February 2007
Embedded Multipliers
Embedded Multiplier Routing Interface
The R4, C4, and direct link interconnects from adjacent LABs drive the
embedded multiplier row interface interconnect. The embedded
multipliers can communicate with LABs on either the left or right side
through these row resources or with LAB columns on either the right or
left with the column resources. Up to 16 direct link input connections to
the embedded multiplier are possible from the left adjacent LABs and
another 16 possible from the right adjacent LAB. Embedded multiplier
outputs can also connect to left and right LABs through 18 direct link
interconnects each. Figure 2–19 shows the embedded multiplier to logic
array interface.
Figure 2–19. Embedded Multiplier LAB Row Interface
LAB
LAB
Row Interface
Block
Embedded Multiplier
16
[35..0]
[35..0]
Embedded Multiplier
to LAB Row Interface
Block Interconnect Region
36 Inputs per Row
36 Outputs per Row
R4 Interconnects
C4 Interconnects
C4 Interconnects
Direct Link Interconnect
from Adjacent LAB
18 Direct Link Outputs
to Adjacent LABs
Direct Link Interconnect
from Adjacent LAB
18
18
36
36
Control
5
18
18
16
LAB Block
Interconect Region
LAB Block
Interconect Region


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