Hi,
I want to get a quick look at the power consumption of one block.
--use RTL Compiler generate netlist(after syn) and sdf
--run gate sim with or without sdf annotated, get VCD
--use netlist and VCD in ETS, get power consumption
I found the power consumption get form VCD without sdf annotated is much greater than with sdf annotated.
This makes me confuse. I think the power with sdf annotated should be bigger. Can anyone help to explain this?
I found there is only one difference with the log (the value changes got from vcd).
without sdf annotated:
With this vcd command, 12005021 value changes and 1e-06 second
simulation time were counted for power consumption calculation.
Filename (activity) :
../in/ad9651_datapath_top_gate.vcd
Names in file that matched to design : 234754/352833
Annotation coverage for this file : 54305/54305 = 100%
Activity annotation summary:
Primary Inputs : 89/89 = 100%
Flop outputs : 8172/8172 = 100%
Memory/Macro outputs : 0/0 = 0%
Tristate outputs : 0/0 = 0%
Total Nets : 54305/54305 = 100%
with sdf annotated:
With this vcd command, 6867391 value changes and 1e-06 second
simulation time were counted for power consumption calculation.
Filename (activity) :
../in/ad9651_datapath_top_gate.vcd
Names in file that matched to design : 234754/352833
Annotation coverage for this file : 54305/54305 = 100%
Activity annotation summary:
Primary Inputs : 89/89 = 100%
Flop outputs : 8172/8172 = 100%
Memory/Macro outputs : 0/0 = 0%
Tristate outputs : 0/0 = 0%
Total Nets : 54305/54305 = 100%
