Altera PowerPlay Early Power Estimator for Altera CPLDs Uživatelský manuál stáhnout pdf (Strana 15)

Chapter 2: PowerPlay Early Power Estimator Worksheets 2–5

Power Estimation Using the PowerPlay Early Power Estimator

December 2010 Altera Corporation PowerPlay Early Power Estimator for Altera CPLDs User Guide

Power Supply Current

The power supply current, shown in mA, provides the estimated current

consumption for power supplies. The I

CCPOWERUP

is only applicable during power up

when the configuration flash memory (CFM) block downloads to the SRAM. The

CCINT

current is the supply current required from V

CCINT

. The total I

CCIO

current is the

supply current required from V

CCIO

for all I/O banks. For more information about the

estimates of I

CCIO

based on I/O banks, refer to the “I/O Worksheet” on page 2–9.

Tab le 2–4 lists the power supply current parameters in the PowerPlay EPE

spreadsheet, as shown in Figure 2–1 on page 2–1.

Other Input Section

Figure 2–3 shows the four buttons under the other input parameters section in the

PowerPlay EPE spreadsheet.

Tab le 2–5 lists the four buttons under the other input parameters section in the

PowerPlay EPE spreadsheet.

Table 2–4. Power Supply Current Section Information

Column Heading Description

CCPOWERUP

Represents the maximum current drawn during power up.

CCINT

Represents the total current drawn from the I

CCINT

supply.

CCIO

Represents the total current drawn from the I

CCIO

power rails. For more information about the

current drawn from each I/O rail, refer to “I/O Worksheet” on page 2–9.

Figure 2–3. Other Input Section in PowerPlay EPE Spreadsheet

Table 2–5. Other Input Section Information

Column Heading Description

Set Toggle % Sets the toggle rate for the “Logic Section” on page 2–7 and “I/O Worksheet” on page 2–9.

Reset Clears all input values in the PowerPlay EPE spreadsheet.

Import QII File

For more information about how to import the Quartus II File, refer to “Entering Information

into the PowerPlay Early Power Estimator” on page 1–4.

Import EPE

For more information about how to import the EPE spreadsheet, refer to “Entering Information

into the PowerPlay Early Power Estimator” on page 1–4.

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