EP1AGX ALTERA [Altera Corporation], EP1AGX Datasheet - Page 41

• Manufacturer Part Number: EP1AGX
• Description: Section I. Arria GX Device Data Sheet
• Manufacturer: ALTERA [Altera Corporation]

Chapter 2: Arria GX Architecture
Adaptive Logic Modules
Figure 2–30. ALM in Normal Mode
Note to
(1) Combinations of functions with less inputs than those shown are also supported. For example, combinations of functions with the following
© December 2009 Altera Corporation
number of inputs are supported: 4 and 3, 3 and 3, 3 and 2, 5 and 2, and so on.
Figure
datae0
datae1
datae0
datae1
datae0
datae1
dataf0
dataf1
dataf0
dataf1
dataf0
dataf1
dataa
datab
datad
dataa
datab
datad
dataa
datab
datad
datac
datac
datac
2–30:
Normal Mode
Normal mode is suitable for general logic applications and combinational functions.
In this mode, up to eight data inputs from the LAB local interconnect are inputs to the
combinational logic. Normal mode allows two functions to be implemented in one
Arria GX ALM, or an ALM to implement a single function of up to six inputs. The
ALM can support certain combinations of completely independent functions and
various combinations of functions which have common inputs.
supported LUT combinations in normal mode.
Normal mode provides complete backward compatibility with four-input LUT
architectures. Two independent functions of four inputs or less can be implemented in
one Arria GX ALM. In addition, a five-input function and an independent three-input
function can be implemented without sharing inputs.
3-Input
LUT
4-Input
5-Input
5-Input
4-Input
4-Input
LUT
LUT
LUT
LUT
LUT
(Note 1)
combout0
combout1
combout0
combout1
combout0
combout1
datae0
datae1
datae0
datae0
datae1
dataf0
dataf1
dataf0
dataf0
dataf1
dataa
datab
datad
dataa
datab
datad
dataa
datab
datad
datac
datac
datac
6-Input
6-Input
6-Input
5-Input
5-Input
LUT
LUT
LUT
LUT
LUT
Arria GX Device Handbook, Volume 1
Figure 2–30
combout0
combout1
combout0
combout0
combout1
shows the
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