EP3SE50F780I3N Altera, EP3SE50F780I3N Datasheet - Page 62

• Manufacturer Part Number: EP3SE50F780I3N
• Description: Stratix III
• Manufacturer: Altera

Column Interconnects
3–4
Stratix III Device Handbook, Volume 1
Figure 3–2. Shared Arithmetic Chain, Carry Chain, and Register Chain
Interconnects
The C4 interconnects span four adjacent interfaces in the same device
column. C4 interconnects also pass by M144K and DSP blocks. A single
M144K block utilizes eight adjacent interfaces in the same column. A DSP
block utilizes four adjacent interfaces in the same column.
shows the C4 interconnect connections from a LAB in a column. The C4
interconnects can drive and be driven by all types of architecture blocks,
including DSP blocks, TriMatrix memory blocks, and column and row
IOEs. For LAB interconnection, a primary LAB or its LAB neighbor can
drive a given C4 interconnect. C4 interconnects can drive each other to
extend their range as well as drive row interconnects for
column-to-column connections.
Routing to Adjacent ALM
Carry Chain & Shared
Arithmetic Chain
Interconnect
Local
Local Interconnect
Routing Among ALMs
in the LAB
ALM10
ALM 1
ALM 2
ALM 3
ALM 4
ALM 5
ALM 6
ALM 7
ALM 8
ALM 9
Register Chain
Routing to Adjacent
ALM's Register Input
Altera Corporation
Figure 3–3
October 2007