Altera PowerPlay Early Power Estimator - Manual (Page 42)

3–24 Altera Corporation
PowerPlay Early Power Estimator For Stratix II, Stratix II GX & HardCopy II January 2007
PowerPlay Early Power Estimator Inputs
The PowerPlay Early Power Estimator spreadsheet also verifies that the
V
CCIO
levels match the I/O standards for each I/O bank. If there is a
discrepancy, it is displayed in the Bank Voltage Check column, as shown
in
Figure 3–14 .
Figure 3–14. PowerPlay Early Power Estimator Spreadsheet Checks for V
CCIO
Inconsistencies
1
Importing the Quartus II estimation file automatically populates
the V
CCIO
voltages. However, certain designs may have
discrepancies. This occurs most often if I/O standards that are
listed as different voltages in the PowerPlay Early Power
Estimator spreadsheet can actually be in the same I/O bank on
the device.
f
For more information on I/O standard guidelines, see the Selectable I/O
Standards in Stratix II Devices chapter in volume 2 of the Stratix II Device
Handbook.
If there are discrepancies between the V
CCIO
voltages in banks, the
PowerPlay Early Power Estimator spreadsheet displays the following
message:
Bank and I/O voltage selection inconsistent with I/O Bank Voltage. See
the Bank Voltage column.
Ensure that the correct V
CCIO
is selected for the bank.