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1. Completeness of power-intent (i.e. CPF) written.
Here you identifies, power-domains which are not specified with respective strategies.
power-domains where false and redundant strategies have been specified.
Correctness of various...
I have only mentioned single supply having different states to put my querry in simple way but in actual there 15 supplies
being working which are driving respective domains.
Thus in simulation, I can see VDD transition as below (attached GIF) over different supplies
Thus if supply-rail VDD having 4 different voltage levels
1. 0.8V (max leakage saving)
2. 0.0V (i.e. OFF-state)
3. 1.0V
4. 1.2V (i.e. FULL-ON, max switching)
Than with power-aware simulation, I can see this power-rail being switched between these voltage values. Is that correct?
Please tell which are the simulators being used for performing power-aware simulations.
and which wave-form viewers are used.
For example, a signal can go to different voltage values during different power-configurations.
Does this kind of scaling can be observed in power-aware waveform...
I have few doubts on reset-polarity. Please share your thoughts.
1. Can there be multiple polarities of reset feasible in a design?
2. If Flop (F1) output is reaching another Flop (F2) via a inverter, will such situation be consider as design with multiple reset-polarity...
UPF 2.0 LRM where source and sink options being explored where user can write the power-intent
with the help of supply-sets.
It is seen that
for set_isolation (UPF command which is used to specify isolation strategy) and
set_retention (UPF command which is used to specify retention...
Hi
Though Conformal_Lowpower_checks.pdf but its older version 9.1 where i see multiple issues.
Anybody working on Conformal 12.1? Please send the Lowpower-checks pdf which contains
Commands
Lowpower rule checks and
CPF rule checks.
Thanks in advance.
NitinT
Your opinion is in sync with what i have described.
Infact what i feel the library development go hand-to-hand in parallel with IP development.
Library development people test there cells by incorporating them in some testchip which is again check by them(library development guys) on silicon...
Hi
For Synthesizing a RTL to netlist using either Synopsys DC or Cadence RC, we need
Technology libraries => which has cell complete information.
Symbol Libraries => cell schematic information
Constraints File => various delays, clock definitions specified.
Please tell how...
Yes. Due to this
If in my SoC few IPs are UPF based and other are CPF based than it is difficult to merge than at SoC level unless
one of the power-format is converted (manually i feel) to another and than go on with verification but here new power-
intent needs to be re-checked for...
Try get lowpower papers on the internet.
Otherwise check Cadence,Atrenta,Synopsys,Apache etc., there you will find more such papers.
Access Si2.org, it will also have lowpower stuff.
There is one book "LPMM" from Synopsys.
Adding the above said,
These (i.e. UPF and CPF) power-formats are recognised through-out the industry with which
you can specify power-gating considerations for a design.
UPF and CPF corresponding to any lowpower design being developed in RTL stage and referred till end (i.e...
I have found thatt is done there are two commands
begin_power_model
end_power_model
These can be used to model Hard IP. I have not seen these commands in UPF 2.0
If anybody having UPF 2.1 than please share the same.
UPF and CPF are the two power-formats being used in the industry for specifying power-intent
(or power-intention) of an IP or SoC which talks about multiple power-domains and island and corresponding strategies (Isolation,Level-shifteting,retention).
The power-formats includes description of...
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