EP3C16F256I7N Altera, EP3C16F256I7N Datasheet - Page 52

• Manufacturer Part Number: EP3C16F256I7N
• Description: Cyclone III
• Manufacturer: Altera

MultiTrack Interconnect in Cyclone III Devices
Figure 3–6. Embedded Multiplier LAB Row Interface
3–10
Cyclone III Device Handbook, Volume 1
Interconect Region
LAB Block
C4 Interconnects
LAB
Embedded Multiplier
to LAB Row Interface
Block Interconnect Region
Direct Link Interconnect
from Adjacent LAB
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.
array interface.
16
Row Interface
36
5
Block
36 Inputs per Row
Figure 3–6
R4 Interconnects
18
16
18
Control
[35..0]
Embedded Multiplier
shows the embedded multiplier to logic
36 Outputs per Row
[35..0]
18 Direct Link Outputs
to Adjacent LABs
36
Altera Corporation-Preliminary
C4 Interconnects
18
18
Interconect Region
Direct Link Interconnect
from Adjacent LAB
LAB Block
March 2007
LAB