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Contents

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1

Product and Licensing Information

Voltus-Fi Custom Power Integrity Solution Product Description

Voltus-Fi Custom Power Integrity Solution Licenses

Checking Out Licenses for Voltus-Fi Custom Power Integrity Solution Products

Voltus-Fi-L Compatibility with MMSIM/SPECTRE and EXT Product Versions

Voltus-Fi-L Compatibility with Voltus IC Power Integrity Solution

2

Getting Started

Product and Installation Information

Supported and Compatible Platform

Starting the Software

PreRequisites for Running Voltus-Fi-L

Running Voltus-Fi-L in Batch Mode

Running Voltus-Fi-L in the GUI Mode

Data Requirements for the GUI Flow

Launching Voltus-Fi-L from Virtuoso Schematic Editor L

Log Files for Voltus-Fi-L

Accessing Documentation and Help

Launching Cadence Help from the Command Prompt

Accessing Documentation and Help from the GUI

Other Source of Information

3

Product Overview

Voltus-Fi-L Product Overview

Key Product Features and Description

4

IR/EM Analysis Flow

Overview

Running Pegasus or PVS LVS

Running Pegasus or PVS Quantus

Running Extraction with Quantus QRC (Calibre) Interface

Running a Spectre Simulation

Running an APS Simulation

5

Environment Variables

Setting Up the Voltus-Fi-L Environment Variables

VFI_EXTVIEW_UNIT_FACTOR

VFI_LIC_QUEUE

VOLTUSFI_DELTA_T

VOLTUSFI_DYNAMIC_AC_PEAK

VOLTUSFI_SPLIT_ACDC_RULES

VFI_POINT_QUERY

ENABLE_VFI_L_RON_DATA_READING_FROM_PSF

VSAPLOT_USE_DEFAULT_LAYER_ORDER

VSAPLOT_EXTERNAL_LAYER_ORDER_FILE_PATH

_vsaLSFMachineString

_vsaUncheckViewFile

vfiEnableGUI

6

IR Drop Analysis Results

Overview

Signal Net IR Drop Analysis

Solid Shape Highlighting

Displaying Finer Color Gradient for Selected Layers in IR and EM Plots

Loading the DFII Layer Map File by Default

Setting a Layer Index for Displaying Violations on the Layout

The IR Drop Analysis Flow

The IR Drop Analysis Batch Mode Flow

Sample Command Files for IR Drop Analysis

The IR Drop Analysis GUI Flow

Viewing the IR Drop Analysis Results

Displaying and Querying EMIR Results

Types of IR Drop Analysis Plots

Plotting the Least-Resistive Path

The LRP Browser

Shorting Layers for LRP Analysis

Displaying LRP for the Node on the Selected Marker

Generating EMIR Analysis Reports in Voltus-Fi-L

Reports Generated Using the EMIR Control File

Default Reports Generated by Voltus-Fi-L for EMIR Analysis

RLRP Report

Reporting On-Resistance Values

Overview

Generating the RON Report

Output

7

EM Analysis Results

Overview

EM Rules Specification

Types of EM Analysis

Design Resistor EM Current Analysis

The EM Analysis Flow

The EM Analysis Batch Mode Flow

The EM Analysis GUI Flow

Displaying Current Directions for EM Plots

Reporting the Direction of Currents in the EM Result File

Converting emDataFile to ICT File for EM Analysis

Types of EM Analysis Plots

Generating EM Analysis Reports in Voltus-Fi-L

8

EM Rules Specification

EM Rule File Requirements

EM Rules in qrcTechFile

Rules for Defining EM Parameters

EM Rule Selection Priority

EM Rules in EM Data File

9

SKILL Functions

Overview

Voltus-Fi SKILL Functions

vsaOpenSchematic

vsaDescendView

10

Power-Grid View Creation

The Power-Grid View Flow

Data Requirements and Flow for PGV Creation

Creating Power-Grid Views

Writing Out a PGV Command File

Outputs of PGV Generation

11

Viewing Results in vsaplot or vfiplot

Overview

Launching vsaplot

Generating the VSA_RESULTS Database in Voltus-Fi

Generating the VSA_RESULTS Database in the GUI Mode

Generating the VSA_RESULTS Database in the Batch Mode

Specifying the Order of Layers in vsaplot

Launching vsaplot

Launching vsaplot from the Shell

Launching vsaplot from the GUI

Viewing Results in vsaplot

Main Menus of vsaplot

Toolbar Widgets

Main Components of vsaplot

Querying IR Drop and EM Results

Zooming into the Worst Violation in the Selected Area

Retrieving the Values of All the Violations at a Specified Point on the Layout

Displaying the Colormap for Point-to-Point and Region-to-Region Selection

Calculating Relative Resistance Values between the Nodes on a Net in vfiplot

Requirements for Running the Relative-R Flow

Running the Relative-R Flow

Calculating the Total Resistance for All Pins

Synchronizing Multiple vsaplot Windows

Opening a Sub-Window to Initiate Synchronism

Synchronizing Options

Synchronizing vsaplot with the Layout or Extracted View

12

Batch Mode Execution

Overview

Migrating from Legacy (VPS-L) to Voltus-Fi-L in Batch Mode

The Command File Support

Supported Voltus-Fi Commands

Batch Commands for IR Reports

load_ir_results_extview

print_ir_report

print_rlrp_report

Batch Commands for EM Reports

load_em_results_extview

print_em_report

Batch Command for RON Reports

report_vfi_L_ron

Batch Commands for Querying

Batch Commands for Viewing Results in vsaplot and vfiplot

write_ir_vsaplot_db

write_em_vsaplot_db

Supported VPSL Batch File Commands

_vsa_extracted_lib_cell_view

_vsa_qrc_run_directory

_vsa_qrc_run_name

_vsa_simulation_directory

_vsa_em_tech_file

_vsa_em_data_file

_vsa_analysis_data

_vsa_vavo_db_file

_vsa_testbench_lib_cell_view

_vsa_hierarchy

_vsa_analyze_em

_vsa_analyze_ir

_vsa_pres_cellname

_vsa_em_map_file

Sample Batch Mode Command File

The Configuration File Support

EMIR Control File Options Supported in Voltus-Fi-L

Sample Configuration Files

13

Variables

Overview

Using the set_variable Command in the Voltus-Fi Command File

set_variable

Using the emirutil Command in the EMIR Control File

Setting the Configuration Variable in the Batch Mode

Using the Variables in the Voltus-Fi-L GUI

applyRThreshold

deltaT

disableLayoutScale

dynamicACPeak

emLimitScale

enableDesignResistorPeakFactor

enableDesignResistorScaling

extendPWLMatch

halfPeakAnalysis

optimisticEMRuleSelection

powerRailSupplyNets

powerRailRules

powerRailGroundNets

process_scale

prioritizedPwlRulesLayers

pwc_threshold

reportUnmatchedRuleResistor

rmsMetalLineNumberSignal

rmsMultiplierPin

rmsMultiplierSignal

simpleSingleViaDefinition

splitACDCRules

Tj

Tlife

useRecoveryFactor

14

File Formats

Rail Analysis Files

DFII Layer Map File

Layer Map File

Power-Grid View Creation Files

DSPF Layermap File

LEF Layermap File

PGDB Layermap File

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