Independent Multiplier Mode - Altera Cyclone V Device Handbook

CV-52003
2014.01.10
Independent Complex Multiplier Mode
Multiplier Adder Sum Mode
18 x 18 Multiplication Summed with 36-Bit Input Mode
Systolic FIR Mode

Independent Multiplier Mode

In independent input and output multiplier mode, the variable precision DSP blocks perform individual
multiplication operations for general purpose multipliers.
Table 3-4: Variable Precision DSP Block Independent Multiplier Mode Configurations
18 (signed) x 18 (unsigned)
18 (unsigned) x 18 (unsigned)
18 (signed) x 19 (signed)
18 (unsigned) x 19 (signed)
9 x 9 Independent Multiplier
Figure 3-4: Three 9 x 9 Independent Multiplier Mode per Variable Precision DSP Block for Cyclone V Devices
Three pairs of data are packed into the
ay[y2, y1, y0]
ax[x2, x1, x0]
Variable Precision DSP Blocks in Cyclone V Devices
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Configuration
9 x 9
18 x 25
20 x 24
27 x 27
Variable-Precision DSP Block
27
27
and ports;
ax ay result
Multiplier
x
Independent Multiplier Mode
Multipliers per block
3
2
1
1
1
contains three 18-bit products.
54
Result[53..0]
(p2, p1, p0)
3-11
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