Arria GX Architecture
Figure 2–30. ALM in Normal Mode Note (1)
dataf0
datae0
datac
dataa
datab
dataf0
4-Input
LUT
datae0
datac
dataa
5-Input
LUT
combout0
combout1
combout0
combout1
datab
datad
datae1
dataf1
4-Input
LUT
5-Input
LUT
datad
datae1
dataf1
dataf0
datae0
datac
dataa
datab
5-Input
LUT
dataf0
datae0
dataa
datab
datac
datad
combout0
combout1
6-Input
LUT
combout0
datad
datae1
dataf1
3-Input
LUT
dataf0
datae0
dataa
datab
datac
datad
6-Input
LUT
combout0
combout1
dataf0
datae0
datac
dataa
datab
5-Input
LUT
combout0
combout1
6-Input
LUT
datad
datae1
4-Input
LUT
datae1
dataf1
dataf1
Note to Figure 2–30:
(1) Combinations of functions with less inputs than those shown are also supported. For example, combinations of
functions with the following number of inputs are supported: 4 and 3, 3 and 3, 3 and 2, 5 and 2, etc.
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.
Altera Corporation
May 2008
2–43
Arria GX Device Handbook, Volume 1
ALTERA [ ALTERA CORPORATION ]
