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#Static chip writer how to

This component is proportional to the frequency, load and toggle rate. Power Density Map (Source : Apache Redhawk Manual)ĭynamic component is contributed by internal power and the switching power.

In Redhawk GUI, you can see the sorted list of high power instances in the design using “Results -> List of Highest Power Instances for Static Simulation” menu.įigure3. You can also click on any instance in the GUI to get more details of power calculation for that instance. Instance power file (adsRpt/.power.rpt) will contain instance specific power values. Power summary report will give you the power consumption for each voltage domain, frequency domain and for each cell type in the design. Redhawk power summary report file (adsRpt/power_summary.rpt) will give you the details of power consumption of the design. High average power can affect both static and dynamic voltage drop results.

Similarly in dynamic analysis, high transient(switching) current can lead to high Dynamic IR drop.Īverage current is proportional to the average power of the design. High average current can cause for high Static IR Drop. Static or Dynamic IR Drop is proportional to the current flowing through the power grid. IR Drop is Signal Integrity(SI) effect caused by wire (metal) resistance and current drawn off from Power (Vdd) and Ground (Vss) grids.

#Static chip writer how to

How to find the high IR Drop analysis is due to high current flowing through the power (PG) grid?

Inadequate amount of Decaps available : Can affect only Dynamic.

High Package parasitics : can affect Static as well as Dynamic Drop.

Insufficient number of voltage sources : can affect Static as well as Dynamic Drop.

Simultaneous Switching : can affect only Dynamic.

High PG grid impedance : can affect static as well as Dynamic IR Drop.

High current flowing through the power grid : can affect Static as well as Dynamic IR drop.

In a design if there is high static or dynamic voltage drop, It could be due to one of the following reasons. What are the different reasons for high voltage drop in a design? Voltagestorm from Cadence, Redhawk from Apache are mainly used to show IR Drop on chip. Various tools are available for IR Drop Analysis. What are the different tools used for IR Drop Analysis? Static IR drop Analysis is vectorless power analysis with average current cycles, whereas, Dynamic IR drop analysis is vector based power analysis with worst-case switching currents. What are the different types of IR Drop Analysis?