EP3SL150F780I3N Altera, EP3SL150F780I3N Datasheet - Page 60
EP3SL150F780I3N
Manufacturer Part Number
EP3SL150F780I3N
Description
Stratix III
Manufacturer
Altera
Datasheet
1.EP3SL110.pdf
(904 pages)
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Row Interconnects
Figure 3–1. R4 Interconnect Connections
Notes to
(1)
(2)
3–2
Stratix III Device Handbook, Volume 1
C4 and C12 interconnects can drive R4 interconnects.
This pattern is repeated for every LAB in the LAB row.
Figure 3–1
R4 Interconnect
Driving Left
The direct link interconnect allows a LAB, DSP block, or TriMatrix
memory block to drive into the local interconnect of its left and right
neighbors. This capability provides fast communication between
adjacent LABs and blocks without using row interconnect resources. The
direct link interconnect is the fastest way to communicate between two
adjacent blocks.
The R4 interconnects span a combination of four LABs, memory logic
array blocks (MLAB), DSP blocks, M9K blocks, and M144K blocks. Use
these resources for fast row connections in a four-LAB region.
shows R4 interconnect connections from a LAB. R4 interconnects can
drive and be driven by DSP blocks and RAM blocks and row IOEs. For
LAB interfacing, a primary LAB or LAB neighbor can drive a given R4
interconnect. For R4 interconnects that drive to the right, the primary
LAB and right neighbor can drive to the interconnect. For R4
interconnects that drive to the left, the primary LAB and its left neighbor
can drive the interconnect. R4 interconnects can drive other R4
interconnects to extend the range of LABs they drive. R4 interconnects
can also drive C4 and C12 (column interconnects) for connections from
one row to another. Additionally, R4 interconnects can drive R20
interconnects.
Adjacent LAB can
Drive onto Another
LAB's R4 Interconnect
Neighbor
Notes
LAB
(1),
(2)
MLAB
C4 and C12
Column Interconnects (1)
Neighbor
LAB
R4 Interconnect
Driving Right
Altera Corporation
October 2007
Figure 3–1
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