DSP48A Slice
The Spartan-3A platform’s optimized DSP48A slice* (PDF) achieves 250 MHz operation in the slowest speed grade and enables advanced DSP functions to derive over 30 GMACS.
- DSP slices providing advanced MACC functionality
- Configurable logic blocks to store data and implement logic functions
- Precise clock management resources
- Advanced I/O structure
- 18-bit by 18-bit, two's complement multiplier with full precision 36-bit result, sign extended to 48 bits
- Pre-adder saves 9 logic slices per DSP48A used
- Two input, flexible 48-bit adder/subtracter with optional registered accumulation feedback
- DSP co-processing functions such as MAC engines, distributed algorithms and fully parallel FIR filters
* Available only in largest two devices.