Chapter 2: MAX V Architecture
2–5
Logic Array Blocks
adjacent LE for fast sequential LUT connections within the same LAB. Register chain
connections transfer the output of one LE’s register to the adjacent LE’s register
within an LAB. The Quartus® II software places associated logic 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 shows the MAX V LAB.
Figure 2–3. LAB Structure for MAX V Devices
Row Interconnect
Column Interconnect
LE0
LE1
LE2
LE3
Fast I/O connection
to IOE (1)
Fast I/O connection
to IOE (1)
DirectLink
DirectLink
interconnect from
adjacent LAB
or IOE
interconnect from
adjacent LAB
or IOE
LE4
LE5
LE6
LE7
DirectLink
DirectLink
interconnect to
adjacent LAB
or IOE
interconnect to
adjacent LAB
or IOE
LE8
LE9
Logic Element
LAB
Local Interconnect
Note to Figure 2–3:
(1) Only from LABs adjacent to IOEs.
December 2010 Altera Corporation
MAX V Device Handbook
ALTERA [ ALTERA CORPORATION ]
