The Spartan®-3A DSP family of Field-Programmable Gate Arrays (FPGAs) solves the design challenges in most high- volume, cost-sensitive, high-performance DSP applications. The two-member family offers densities ranging from 1.8 to 3.4 million system gates.
The Spartan-3A DSP family builds on the success of the Spartan-3A FPGA family by increasing the amount of memory per logic and adding XtremeDSP DSP48A slices. New features improve system performance and reduce the cost of configuration. These Spartan-3A DSP FPGA enhancements, combined with proven 90 nm process technology, deliver more functionality and bandwidth per dollar than ever before, setting the new standard in the programmable logic and DSP processing industry.
The Spartan-3A DSP FPGAs extend and enhance the Spartan-3A FPGA family. The XC3SD1800A and the XC3SD3400A devices are tailored for DSP applications and have additional block RAM and XtremeDSP DSP48A slices. The XtremeDSP DSP48A slices replace the 18x18 multipliers found in the Spartan-3A devices and are based on the DSP48 blocks found in the Virtex®-4 devices. The block RAMs are also enhanced to run faster by adding an output register. Both the block RAM and DSP48A slices in the Spartan-3A DSP devices run at 250 MHz in the lowest cost, standard -4 speed grade.
Because of their exceptional DSP price/performance ratio, Spartan-3A DSP FPGAs are ideally suited to a wide range of consumer electronics applications, such as broadband access, home networking, display/projection, and digital television.
The Spartan-3A DSP family is a superior alternative to mask programmed ASICs. FPGAs avoid the high initial cost, lengthy development cycles, and the inherent inflexibility of conventional ASICs. Also, FPGA programmability permits design upgrades in the field with no hardware replacement necessary, an impossibility with ASICs.
Very low cost, high-performance DSP solution for high-volume, cost-conscious applications
250 MHz XtremeDSP DSP48A Slices
Dedicated 18-bit by 18-bit multiplier
Available pipeline stages for enhanced performance of at least 250 MHz in the standard -4 speed grade
48-bit accumulator for multiply-accumulate (MAC) operation
Integrated adder for complex multiply or multiply-add operation
Integrated 18-bit pre-adder
Optional cascaded Multiply or MAC
Hierarchical SelectRAM™ memory architecture
Up to 2268 Kbits of fast block RAM with byte write enables for processor applications
Up to 373 Kbits of efficient distributed RAM
Registered outputs on the block RAM with operation of at least 280 MHz in the standard -4 speed grade