EPM570 Altera, EPM570 Datasheet - Page 11

• Manufacturer Part Number: EPM570
• Description: MAX II Device Family
• Manufacturer: Altera

Figure 2–3. MAX II LAB Structure
Note to
(1)
Altera Corporation
December 2004
Fast I/O Connection
to IOE (1)
DirectLink
interconnect from
adjacent LAB
or IOE
DirectLink
interconnect to
adjacent LAB
or IOE
Only from LABs adjacent to IOEs.
Figure
2–3:
Logic Element
within an LAB or adjacent LABs, allowing the use of local, LUT chain,
and register chain connections for performance and area efficiency.
Figure 2–3
LAB Interconnects
The LAB local interconnect can drive LEs within the same LAB. The LAB
local interconnect is driven by column and row interconnects and LE
outputs within the same LAB. Neighboring LABs, from the left and right
can also drive an LAB’s local interconnect through the DirectLink
connection. The DirectLink connection feature minimizes the use of row
and column interconnects, providing higher performance and flexibility.
Each LE can drive 30 other LEs through fast local and DirectLink
interconnects.
Core Version a.b.c variable
LE0
LE1
LE2
LE3
LE4
LE5
LE6
LE7
LE8
LE9
LAB
shows the MAX II LAB.
Figure 2–4
shows the DirectLink connection.
Local Interconnect
Row Interconnect
MAX II Device Handbook, Volume 1
MAX II Architecture
Column Interconnect
Fast I/O connection
to IOE (1)
DirectLink
interconnect from
adjacent LAB
or IOE
DirectLink
interconnect to
adjacent LAB
or IOE
2–5