October 2009 1
© 2009 Actel Corporation See the Actel website for the latest version of the datasheet.
Product Brief
Axcelerator Family FPGAs
Leading-Edge Performance
350+ MHz System Performance
500+ MHz Internal Performance
High-Performance Embedded FIFOs
700 Mb/s LVDS Capable I/Os
Specifications
Up to 2 Million Equivalent System Gates
Up to 684 I/Os
Up to 10,752 Dedicated Flip-Flops
Up to 295 kbits Embedded SRAM/FIFO
Manufactured on Advanced 0.15 μm CMOS Antifuse
Process Technology, 7 Layers of Metal
Features
Single-Chip, Nonvolatile Solution
Up to 100% Resource Utilization with 100% Pin Locking
1.5V Core Voltage for Low Power
Footprint Compatible Packaging
Flexible, Multi-Standard I/Os:
1.5V, 1.8V, 2.5V, 3.3V Mixed Voltage Operation
Bank-Selectable I/Os – 8 Banks per Chip
Single-Ended I/O Standards: LVTTL, LVCMOS, 3.3V
PCI, and 3.3V PCI-X
Differential I/O Standards: LVPECL and LVDS
Voltage-Referenced I/O Standards: GTL+, HSTL
Class 1, SSTL2 Class 1 and 2, SSTL3 Class 1 and 2
Registered I/Os
Hot-Swap Compliant I/Os (except PCI)
Programmable Slew Rate and Drive Strength on
Outputs
Programmable Delay and Weak Pull-Up/Pull-Down
Circuits on Inputs
Embedded Memory:
Variable-Aspect 4,608-bit RAM Blocks (x1, x2, x4,
x9, x18, x36 Organizations Available)
Independent, Width-Configurable Read and Write Ports
Programmable Embedded FIFO Control Logic
Segmentable Clock Resources
Embedded Phase-Locked Loop:
14-200 MHz Input Range
Frequency Synthesis Capabilities up to 1 GHz
Deterministic, User-Controllable Timing
Unique In-System Diagnostic and Debug Capability
with Actel Silicon Explorer II
Boundary-Scan Testing Compliant with IEEE Standard
1149.1 (JTAG)
•FuseLock
TM Secure Programming Technology
Prevents Reverse Engineering and Design Theftt
e
u
Table 1-1 Axcelerator Family Product Profile
Device AX125 AX250 AX500 AX1000 AX2000
Capacity (in Equivalent System Gates) 125,000 250,000 500,000 1,000,000 2,000,000
Typical Gates 82,000 154,000 286,000 612,000 1,060,000
Modules
Register (R-cells) 672 1,408 2,688 6,048 10,752
Combinatorial (C-cells) 1,344 2,816 5,376 12,096 21,504
Maximum Flip-Flops 1,344 2,816 5,376 12,096 21,504
Embedded RAM/FIFO
Number of Core RAM Blocks 4 12 16 36 64
Total Bits of Core RAM 18,432 55,296 73,728 165,888 294,912
Clocks (Segmentable)
Hardwired 4 4 4 4 4
Routed 4 4 4 4 4
PLLs 88888
I/Os
I/O Banks 8 8 8 8 8
Maximum User I/Os 168 248 336 516 684
Maximum LVDS Channels 84 124 168 258 342
Total I/O Registers 504 744 1,008 1,548 2,052
Package
CSP
PQFP
BGA
FBGA
CQFP
CCGA
180
256, 324
208
256, 484
208, 352
208
484, 676
208, 352
729
484, 676, 896
352
624
896, 1152
256, 352
624
Product Brief
Axcelerator Family FPGAs
2Product Brief
Ordering Information
Device Resources
AX1000 1 FG
_
Blank =Standard Speed
=Approximately 15% Faster than Standard
1=Approximately 25% Faster than Standard2
Package Type
=Ball Grid Array (1.27mm pitch)
=Fine Ball Grid Array (1.0mm pitch)
=Chip Scale Package (0.8mm pitch)
PQ =Plastic Quad Flat Pack (0.5mm pitch)
CQ=Ceramic Quad Flat Pack (0.5mm pitch)
896I
Package Lead Count
G
Application
Blank = Commercial (0 to +70° C)
I=Industrial (-40 to +85° C)
PP = Pre-Production
125,000 Equivalent System Gates
AX125 =
AX250
250,000 Equivalent System Gates
=
AX500
500,000 Equivalent System Gates
=
AX1000
1,000,000 Equivalent System Gates
=
AX2000
2,000,000 Equivalent System Gates
=
Part Number
Speed Grade
BG
FG
CS
CG =Ceramic Column Grid Array
M=Military (-55 to +125° C)
Lead-Free Packaging
Blank = Standard Packaging
G= RoHS-Compliant Packaging
User I/Os (Including Clock Buffers)
Package AX125 AX250 AX500 AX1000 AX2000
CS180 98––––
PQ208 115 115
CQ208 115 115
CQ256 136
FG256 138 138
FG324 168––––
CQ352 198 198 198 198
FG484 248 317 317
CG624 418 418
FG676 336 418
BG729 516
FG896 516 586
FG1152 684
Note: The FG256, FG324, and FG484 are footprint compatible with one another. The FG676, FG896, and FG1152 are also footprint
compatible with one another.
Axcelerator Family FPGAs
Product Brief 3
Temperature Grade Offerings
Speed Grade and Temperature Grade Matrix
Contact your local Actel representative for device availability.
Package AX125 AX250 AX500 AX1000 AX2000
CS180 C, I
PQ208 C, I, M C, I, M
CQ208 M M
CQ256 M
FG256 C, I C, I, M
FG324 C, I–––
CQ352 M M M M
FG484 C, I, M C, I, M C, I, M
CG624 M M
FG676 C, I, M C, I, M
BG729 C, I, M
FG896 C, I, M C, I, M
FG1152 C, I, M
Notes:
1. C = Commercial
2. I = Industrial
3. M = Military
Std –1 –2
C✓✓
I✓✓
M✓✓
Notes:
1. C = Commercial
2. I = Industrial
3. M = Military
Axcelerator Family FPGAs
4Product Brief
General Description
Actel’s newest FPGA family, Axcelerator offers high
performance at densities of up to two million equivalent
system gates. Based upon Actel’s new AX architecture,
Axcelerator has several system level features such as
embedded SRAM (with complete FIFO control logic),
PLLs, Segmentable Clocks, and chip-wide highway
routing.
Device Architecture
Actel's AX architecture, derived from the highly
successful SX-A sea-of-modules architecture, has been
designed for high performance and total logic module
utilization (Figure 1). There are two base logic modules:
the Register Cell (R-cell), containing a full-featured flip-
flop and the Combinatorial Cell (C-cell), containing a
four-input MUX with control and carry-chain logic.
Two C-cells and a single R-cell form a Cluster, and two
Clusters comprise a SuperCluster. SuperClusters are
organized into Core Tiles, which are combined to
generate each device (please refer to the Axcelerator
Family FPGAs data sheet for more information).
Additionally, each SuperCluster contains an independent
Buffer Module. Buffer Modules support automatic buffer
insertion for high-fanout nets by the place-and-route
tool, providing better overall system delays while
improving logic utilization.
The AX architecture is fully fracturable, meaning that if
one or more of the logic modules in a SuperCluster are
used by a particular signal path, the other logic modules
are still available for use by other paths.
Figure 1 AX Device SuperCluster
Chip Layout
SuperCluster
I/O Structure
See Figure 7
RAMC
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Core Tile
4k
RAM/
FIFO
4k
RAM/
FIFO
4k
RAM/
FIFO
4k
RAM/
FIFO
RX
TX
B
CRCC C R
RX RX RX
TX TXTX
Axcelerator Family FPGAs
Product Brief 5
Embedded Memory
The embedded, variable-aspect-ratio SRAM blocks have
separate read and write ports that can be configured
with different bit widths on each port. Available memory
configurations are: 128x36, 256x18, 512x9, 1kx4, 2kx2 or
4kx1 bit. Additionally, every SRAM block has an
embedded FIFO control unit. The control unit allows the
SRAM block to be configured as a synchronous FIFO, with
programmable DEPTH and programmable
ALMOSTEMPTY and ALMOST-FULL flags in addition to
the normal FULL and EMPTY flags.
The embedded FIFO control unit also contains the
counters necessary for the generation of the read and
write address pointers as well as metastable control
circuitry to prevent erroneous operation. The metastable
control circuitry, when combined with the FIFO’s ability
for asynchronous reads and writes, enables these
embedded structures to be used to cross both clock and
phase domains.
I/Os
The Axcelerator family of FPGAs also features a flexible I/O
structure, supporting a range of mixed voltages with its
bank-selectable I/O: 1.5V, 1.8V, 2.5V and 3.3V. In total,
Axcelerator FPGAs support at least 14 different I/O
standards (single-ended, differential, voltage-referenced).
The I/Os are organized into banks, with eight banks per
device (two per side). All I/O options are 3.3V tolerant;
the 3.3V PCI option is 5V tolerant with the aid of an
external resistor. All I/O options except 3.3V PCI are hot-
insertion capable.
Each I/O has an input, output, and enable register.
Routing
Tying all of the device resources together is the AX
hierarchical routing structure, enabling the Axcelerator
family’s high performance and utilization. At the lowest
level in and SuperClusters below, there are three routing
structures: DirectConnects, FastConnects, and
CarryConnects. DirectConnects provide very high
performance routing inside the SuperCluster, while
FastConnects provide high performance routing inside
the SuperCluster and to the below SuperCluster.
CarryConnect routing is used between SuperClusters
when building arithmetic functions. The core tile routing
is at the next level. Both vertical and horizontal tracks
run across a row or column of SuperClusters within a
core tile respectively. At the chip level, routing highways
extend across the full length of the device, both north-
to- south and east-to-west.
Global Resources
Each family member has three types of global signals
available to the designer: HCLK, CLK, and GCLR/GPSET.
There are four hardwired clocks (HCLKs) per device,
which can directly drive the clock input of an R-Cell. Each
of the four routed clocks (CLKs) can drive the clock, clear,
preset, or enable pin of an R-cell or any input of a C-cell.
Global clear (GCLR) and global preset (GPSET) can drive
the clear and preset inputs of each R-Cell as well as each
I/O Register on a chip-wide basis at power up.
Each HCLK and CLK has an associated analog PLL for a
total of eight per chip. Each embedded PLL can be used
for clock delay minimization, clock delay adjustment, or
clock frequency synthesis. The PLL can operate with
input frequencies ranging from 14 MHz to 200 MHz and
can generate output frequencies between 20 MHz and
1 GHz. The clock can be either divided or multiplied by
up to a factor of 64, or multiply and divide settings can
be in any combination as long as the resulting clock does
not exceed the absolute maximum output value (1 GHz).
Additionally, the PLL can be used to introduce either a
positive or a negative clock delay of up to 3.75 ns in 250
ps increments. The reference clock needed to drive the
PLL can be derived from three sources: an external input
pad (configured as either single-ended or differential),
internal logic, or from the output of an adjacent PLL.
Summary
Actel’s Axcelerator family of FPGAs expands the
successful SX-A architecture, adding embedded RAM/
FIFOs, PLLs, and high-speed I/Os. The Axcelerator family
also provides the designer with high-performance at
high-gate counts with high device utilization even with
fixed pins. With the support of a suite of robust software
tools, design engineers can incorporate high gate counts
and fixed pins into an Axcelerator design yet still achieve
high performance and efficient device utilization.
5172160PB-13/10.09
Actel Corporation
2061 Stierlin Court
Mountain View, CA
94043-4655
USA
Phone 650.318.4200
Fax 650.318.4600
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Phone +44 (0) 1276 609 300
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Tokyo 150 Japan
Phone +81.03.3445.7671
Fax +81.03.3445.7668
http://jp.actel.com
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Room 2107, China Resources Building
26 Harbour Road
Wanchai, Hong Kong
Phone +852 2185 6460
Fax +852 2185 6488
www.actel.com.cn
Actel is the leader in low-power FPGAs and mixed-signal FPGAs and offers the most comprehensive portfolio
of system and power management solutions. Power Matters. Learn more at www.actel.com.
Datasheet Categories
In order to provide the latest information to designers, some datasheets are published before data has been fully
characterized. Datasheets are designated as “Product Brief,” “Advanced,” “Production,” and “Web-only.” The
definition of these categories are as follows:
Product Brief
The product brief is a summarized version of a advanced datasheet (advanced or production) containing general
product information. This brief gives an overview of specific device and family information.
Advanced
This datasheet version contains initial estimated information based on simulation, other products, devices, or speed
grades. This information can be used as estimates, but not for production.
Datasheet Supplement
The datasheet supplement gives specific device information for a derivative family that differs from the general family
datasheet. The supplement is to be used in conjunction with the datasheet to obtain more detailed information and
for specifications that do not differ between the two families.
Unmarked (production)
This datasheet version contains information that is considered to be final.