A54SX08-1BG208 ETC1 [List of Unclassifed Manufacturers], A54SX08-1BG208 Datasheet - Page 5

• Manufacturer Part Number: A54SX08-1BG208
• Description: 54SX Family FPGAs
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

5 4 S X F a m i l y F PG A s
The C-cell implements a range of combinatorial functions
up to 5-inputs
associated inverter function dramatically increases the
number
implemented in a single module from 800 options in
previous architectures to more than 4,000 in the SX
architecture. An example of the improved flexibility
Figure 2 • R-Cell
Figure 3 • C-Cell
C h i p A r c h i t e c t u r e
The SX family’s chip architecture provides a unique
approach to module organization and chip routing that
delivers the best register/logic mix for a wide variety of new
and emerging applications.
M od u le O r g a niz a t io n
Actel has arranged all C-cell and R-cell logic modules into
horizontal banks called Clusters. There are two types of
Clusters: Type 1 contains two C-cells and one R-cell, while
of
(Figure
combinatorial
3). Inclusion of the DB input and its
Internal Logic
functions
D0
D1
D2
D3
DB
Connect
CLKA,
CLKB,
Direct
HCLK
Input
that
CKS
S0
can
Data Input
Routed
be
A0
v3.1
CKP
Sa
B0
S1
enabled by the inversion capability is the ability to integrate
a 3-input exclusive-OR function into a single C-cell. This
facilitates construction of 9-bit parity-tree functions with 2
ns propagation delays. At the same time, the C-cell
structure is extremely synthesis friendly, simplifying the
overall design and reducing synthesis time.
Type 2 contains one C-cell and two R-cells.
To increase design efficiency and device performance, Actel
has further organized these modules into SuperClusters
(Figure 4 on page
of Type 1 clusters. SuperCluster 2 is a two-wide group
containing one Type 1 cluster and one Type 2 cluster. SX
devices feature more SuperCluster 1 modules than
SuperCluster 2 modules because designers typically require
significantly more combinatorial logic than flip-flops.
D
PSETB
CLRB
A1
B1
Sb
Q
6). SuperCluster 1 is a two-wide grouping
Y
Y
5