Altera PowerPlay Early Power Estimator - Manual (Page 49)

Altera Corporation 3–31
January 2007 PowerPlay Early Power Estimator For Stratix II, Stratix II GX & HardCopy II
Using the PowerPlay Early Power Estimator
Figure 3–20 shows the PowerPlay Early Power Estimator spreadsheet
and the estimated power consumed by PLLs in this design.
Figure 3–20. PLL Section in the PowerPlay Early Power Estimator
Clocks
Stratix II, Stratix II GX, and HardCopy II devices have a total of 48 clock
domains available that can be on either a global or regional clock
network. There are 16 global clocks and 8 regional clocks per quadrant for
a total of 32 regional clocks. For HardCopy II devices, there is no
distinction between global and regional clocks. The PowerPlay Early
Power Estimator spreadsheet does not distinguish between global and
regional clocks because the difference in power is not significant.
Each row in the Clocks section represents a clock network or a separate
clock domain. You must enter the clock frequency (f
MAX
) in MHz, the total
fanout for each clock network used, the global clock enable percentage,
and the local clock enable percentage.
Table 3–9 describes the parameters
in the Clock section of the PowerPlay Early Power Estimator.
Table 3–9. Clock Section Information (Part 1 of 2)
Column Heading Description
Domain Enter a name for the clock network in this column. This is an optional value.
Clock Freq (MHz) Enter the frequency of the clock domain. The value must be between 0 and 550 Mhz.