Altera PowerPlay Early Power Estimator Bedienungsanleitung PDF herunterladen (Seite 21)

Chapter 3: Using Cyclone III PowerPlay Early Power Estimator 3–9

PowerPlay Early Power Estimator Inputs

Figure 3–5 shows the RAM section of the PowerPlay Early Power Estimator and the

estimated power consumed by RAM blocks.

DSP

Cyclone III device family implement DSP functions in embedded multipliers. These

embedded multiplier blocks are optimized for multiplier-intensive, low-cost DSP

applications. The DSP section in the PowerPlay Early Power Estimator provides

power information for Cyclone

III multiplier blocks.

Each row in the DSP section represents a multiplier design module where all

instances of the module have the same configuration, clock frequency, toggle

percentage, and register usage. If some or all DSP or multiplier instances have

different configurations, you must enter the information in different rows. You must

enter the following information for each multiplier module:

■ Configuration

■ Number of instances

■ Clock frequency (f

MAX

) in MHz

■ Toggle percentage of the data outputs

■ Whether or not the inputs and outputs are registered

f For more information about Cyclone III DSP block configurations, refer to the

Embedded Multipliers in Cyclone III Devices chapter in volume 1 of the Cyclone III Device

Handbook.

Table 3–4 describes the values that must be entered in the DSP section of the

PowerPlay Early Power Estimator.

Figure 3–5. RAM Section in the PowerPlay Early Power Estimator

Table 3–4. DSP and Multiplier Section Information (Part 1 of 2)

Parameters Description

Module Enter a name for the DSP module in this column. This is an optional value.

Configuration Select the DSP block configuration for the module. Cyclone III DSP blocks offer the following

configurations:

■ 9 × 9 multiplier

■ 18 × 18 multiplier

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 41 42

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Altera PowerPlay Early Power Estimator Bedienungsanleitung Seite 21