Intel® Cyclone® 10 GX Device Overview

ID 683485
Date 4/01/2019
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Variable-Precision DSP Block

The Intel® Cyclone® 10 GX variable precision DSP blocks support fixed-point arithmetic and floating-point arithmetic.

Features for fixed-point arithmetic:

  • High-performance, power-optimized, and fully registered multiplication operations
  • 18-bit and 27-bit word lengths
  • Two 18 x 19 multipliers or one 27 x 27 multiplier per DSP block
  • Built-in addition, subtraction, and 64-bit double accumulation register to combine multiplication results
  • Cascading 19-bit or 27-bit when pre-adder is disabled and cascading 18-bit when pre-adder is used to form the tap-delay line for filtering applications
  • Cascading 64-bit output bus to propagate output results from one block to the next block without external logic support
  • Hard pre-adder supported in 19-bit and 27-bit modes for symmetric filters
  • Internal coefficient register bank in both 18-bit and 27-bit modes for filter implementation
  • 18-bit and 27-bit systolic finite impulse response (FIR) filters with distributed output adder
  • Biased rounding support

Features for floating-point arithmetic:

  • A completely hardened architecture that supports multiplication, addition, subtraction, multiply-add, and multiply-subtract
  • Multiplication with accumulation capability and a dynamic accumulator reset control
  • Multiplication with cascade summation capability
  • Multiplication with cascade subtraction capability
  • Complex multiplication
  • Direct vector dot product
  • Systolic FIR filter
Table 6.  Variable-Precision DSP Block Configurations for Intel® Cyclone® 10 GX Devices
Usage Example Multiplier Size (Bit) DSP Block Resources
Medium precision fixed point Two 18 x 19 1
High precision fixed or Single precision floating point One 27 x 27 1
Fixed point FFTs One 19 x 36 with external adder 1
Very high precision fixed point One 36 x 36 with external adder 2
Double precision floating point One 54 x 54 with external adder 4
Table 7.  Resources for Fixed-Point Arithmetic in Intel® Cyclone® 10 GX Devices
Device

Variable-precision

DSP Block

Independent Input and Output

Multiplications Operator

18×19

Multiplier Adder Sum Mode

18×18

Multiplier Adder Summed with 36-bit Input

18×19

Multiplier

27×27

Multiplier

10CX085 84 168 84 84 84
10CX105 125 250 125 125 125
10CX150 156 312 156 156 156
10CX220 192 384 192 192 192
Table 8.  Resources for Floating-Point Arithmetic in Intel® Cyclone® 10 GX Devices
Device

Variable-precision

DSP Block

Single Precision Floating-Point Multiplication Mode Single-Precision Floating-Point Adder Mode Single-Precision Floating-Point Multiply Accumulate Mode

Peak

Giga Floating-Point Operations per Second (GFLOPs)

10CX085 84 84 84 84 76
10CX105 125 125 125 125 113
10CX150 156 156 156 156 140
10CX220 192 192 192 192 173

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