EP1SGX10DF672C6 Datasheet, PDF (81/272 Pages) Altera Corporation – Section I. Stratix GX Device Family Data Sheet

Figure 4–10. C4 Interconnect Connections Note (1)
Stratix GX Architecture
Row
Interconnect
C4 Interconnect
Drives Local and R4
Interconnects
up to Four Rows
C4 Interconnect
Driving Up
LAB
Adjacent LAB can
drive onto neighboring
LAB's C4 interconnect
Local
Interconnect
C4 Interconnect
Driving Down
Note to Figure 4–10:
(1) Each C4 interconnect can drive either up or down four rows.
C8 interconnects span eight LABs, M512, or M4K blocks up or down from
a source LAB. Every LAB has its own set of C8 interconnects to drive
either up or down. C8 interconnect connections between the LABs in a
column are similar to the C4 connections shown in Figure 4–10 with the
exception that they connect to eight LABs above and below. The C8
Altera Corporation
February 2005
4–15
Stratix GX Device Handbook, Volume 1