EP3C16F256I7 Altera, EP3C16F256I7 Datasheet - Page 46
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EP3C16F256I7
Manufacturer Part Number
EP3C16F256I7
Description
Cyclone III
Manufacturer
Altera
Datasheet
1.EP3C16F256I7.pdf
(582 pages)
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MultiTrack Interconnect in Cyclone III Devices
3–4
Cyclone III Device Handbook, Volume 1
Cyclone III devices include an enhanced interconnect structure within
LABs to route logic element (LE) outputs to LE input connections faster
by using register chain connections. 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
automatically takes advantage of these resources to improve utilization
and performance.
Figure 3–2. Register Chain Interconnects
Adjacent ALM
Interconnect
Carry Chain
Routing to
Figure 3–2
Local
shows the register chain interconnects.
Local Interconnect
Routing Among LEs
in the LAB
LE 10
LE 11
LE 12
LE 13
LE 14
LE 15
LE 16
LE 1
LE 2
LE 3
LE 4
LE 5
LE 6
LE 7
LE 8
LE 9
Altera Corporation-Preliminary
Register Chain
Routing to Adjacent
LE's Register Input
®
II compiler
March 2007
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