Intel Agilex Variable Precision Dsp Blocks Operational Modes; Operational Modes For Fixed-Point Arithmetic; Independent Multiplier Mode - Intel Agilex User Manual

UG-20213 | 2019.04.02
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3. Intel Agilex Variable Precision DSP Blocks Operational
Modes
This section describes how you can configure the Intel Agilex variable precision DSP
block to efficiently support the fixed-point arithmetic and floating-point arithmetic
operational modes.
Table 14. Operational Modes
Fixed-Point Arithmetic
•

Independent multiplier mode

• Multiplier adder sum mode
• Independent complex multiplier
• 18 × 18 multiplication summed with 36-Bit input mode
• 18 × 18 systolic FIR mode

3.1. Operational Modes for Fixed-Point Arithmetic

3.1.1. Independent Multiplier Mode
In independent input and output multiplier mode, the variable precision DSP blocks
perform individual multiplication operations for general purpose multipliers.
Table 15. Supported Independent Multiplier Modes
18 (unsigned) x 18 (unsigned)
18 (signed) x 19 (signed)
27 (signed or unsigned) x 27 (signed or unsigned)
3.1.1.1. 18 × 18 or 18 × 19 Independent Multiplier
The 18 × 18 or 18 × 19 independent multiplier mode uses the following equations:
resulta = ax * ay
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Configuration
Floating-Point Arithmetic
• FP32 single-precision multiplication mode
• FP32 single-precision addition or subtraction mode
• FP32 single-precision multiply-add or multiply-subtract
mode
• FP32 single-precision multiply accumulate mode
• Sum of two FP16 multiplication mode
• Sum of two FP16 multiplication with FP32 addition mode
• Sum of two FP16 multiplication with accumulation mode
• FP32 single-precision and FP16 half-precision vector one
mode
• FP32 single-precision and FP16 half-precision vector two
mode
• FP32 single-precision and FP16 half-precision direct
vector dot product
• FP32 single-precision and FP16 half-precision complex
multiplication
Multipliers per Block
2
2
1
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