EPM570 Altera, EPM570 Datasheet - Page 23
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EPM570
Manufacturer Part Number
EPM570
Description
MAX II Device Family
Manufacturer
Altera
Datasheet
1.EPM570.pdf
(92 pages)
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Altera Corporation
December 2004
The column interconnect operates similarly to the row interconnect. Each
column of LABs is served by a dedicated column interconnect, which
vertically routes signals to and from LABs and row and column IOEs.
These column resources include:
■
■
■
MAX II devices include an enhanced interconnect structure within LABs
for routing LE output to LE input connections faster using LUT chain
connections and register chain connections. The LUT chain connection
allows the combinational output of an LE to directly drive the fast input
of the LE right below it, bypassing the local interconnect. These resources
can be used as a high-speed connection for wide fan-in functions from
LE 1 to LE 10 in the same LAB. The register chain connection allows the
register output of one LE to connect directly to the register input of the
next LE in the LAB for fast shift registers. The Quartus II Compiler
automatically takes advantage of these resources to improve utilization
and performance.
interconnects.
LUT chain interconnects within an LAB
Register chain interconnects within an LAB
C4 interconnects traversing a distance of four LABs in an up and
down direction
Core Version a.b.c variable
Figure 2–11
shows the LUT chain and register chain
MAX II Device Handbook, Volume 1
MAX II Architecture
2–17