What is PrimeTime used for

PrimeTime is a stand-alone static timing analysis tool, which is based on the universally adopted EDA tool language, Tcl. A brief section is included on the Tcl language in context of PrimeTime, to facilitate the designer in writing PrimeTime scripts and building upon them to produce complex scripts.

What is DMSA in PrimeTime?

Primetime provides an efficient way to analyze timing at different corners and different operating modes. MMMC (multi-mode multi corner) refers to performing timing analysis at various modes and corner. Distributed Multi-Scenario Analysis (DMSA) refers to timing analysis at different scenarios in a distributed manner.

What is static timing analysis in VLSI?

Static timing analysis is a method of validating the timing performance of a design by checking all possible paths for timing violations under worst-case conditions. It considers the worst possible delay through each logic element, but not the logical operation of the circuit.

What is DMSA in VLSI?

Distributed Multi-Scenario Analysis (DMSA) allows multiple scenarios to be run concurrently, which reduces wall clock time and produces a single comprehensive timing report.

What is another word for prime time?

heydayprimeacmeheightfloruitflushculminationfloweringtimeday

What is Prime Time Synopsys?

PrimeTime is a Static Timing Analysis (STA) tool from Synopsys. This is a simple description to use PrimeTime for VLSI class project. In Project #6, you will learn to find critical path using PrimeTime from your synthesized Verilog code. Go to your PrimeTime working directory first.

What is fusion compiler?

Overview. Fusion Compiler™ is the next generation RTL-to-GDSII implementation system architected to address the complexities of advanced process node design and deliver up to 20% improved quality-of-results (QoR) while reducing time-to-results (TTR) by 2X.

What is mode in VLSI?

A mode is defined by a set of clocks, supply voltages, timing constraints, and libraries. It can also have annotation data, such as SDF or parasitics files. Many chip have multiple modes such as functional modes, test mode, sleep mode, and etc.

What is scenario in VLSI?

In ICCompiler, we create `scenarios` to specify the different corners and modes the design should operate on. In a `scenario`, you can have constraints which determine the mode of operation, and different libraries(or opertaing conditions) which determine the corners.

What is early and late in VLSI?

For Setup analysis, it uses the late value for each startpoint and the early value for each endpoint. For hold analysis, it uses the early value for each startpoint and the late value for each endpoint.

Article first time published on

What is SI in VLSI?

Signal integrity is the ability of an electrical signal to carry information reliably and resist the effects of high-frequency electromagnetic interference from nearby signals. Following are the some of the signal integrity effects might occur in ASIC design.

What is clock path in VLSI?

The path wherein clock traverses is known as clock path. Clock path can have only clock inverters and clock buffers as its element. Clock path may be passed trough a “gated element” to achieve additional advantages. In this case, characteristics and definitions of the clock change accordingly.

What is IC Compiler?

IC Compiler is the industry leading place-and-route system for established and emerging process technology node designs. … IC Compiler hierarchical design technology enables powerful design planning and early chip level exploration / analysis features to handle large, complex designs.

What is RTL to Gdsii flow?

Moore’s law has driven the entire IC implementation RTL to GDSII design flows from one which uses primarily stand-alone synthesis, placement, and routing algorithms to an integrated construction and analysis flows for design closure. … The RTL to GDSII flow underwent significant changes from 1980 through 2005.

What is SDF file in VLSI?

What is SDF: SDF (Standard Delay Format) is an IEEE standard for the representation and interpretation of timing data for use at any stage of the electronic design process. The ASCII data in the SDF file is represented independent of any tool and language.

What is Design Compiler Synopsys?

The Design Compiler topographical technology is an innovative synthesis capability that utilizes Galaxy™ design platform physical implementation technologies to derive interconnect delays. … Synopsys, Inc. is a world leader in electronic design automation (EDA) software for semiconductor design.

What is Corner in VLSI?

Significance to digital electronics In Very-Large-Scale Integration (VLSI) integrated circuit microprocessor design and semiconductor fabrication, a process corner represents a three or six sigma variation from nominal doping concentrations (and other parameters) in transistors on a silicon wafer.

What is Mcmm in VLSI?

Multi-corner multi-mode (MCMM) analysis is a technique intended to provide high confidence results for timing and other metrics without performing exhaustive simulation of all possible IC conditions.

What are RC corners in VLSI?

Refers to the corners which minimize interconnect RC product. So also known as RC-min corner. Typically corresponds to smaller etch which increases the trace width. This results in smallest resistance but corresponds to larger than typical capacitance.

What is Mmmc file in VLSI?

Multi Mode Multi corner (MMMC) file during the physical design gives the analysis of the design over varied modes & corners. VLSI design can be modeled in either functional or test mode etc, with each mode at varied process corners.

What are PVT corners?

PVT is the Process, Voltage, and Temperature. In order to make our chip to work after fabrication in all the possible conditions, we simulate it at different corners of process, voltage, and temperature. These conditions are called corners. All these three parameters directly affect the delay of the cell.

What is test mode in DFT?

The first input of the multiplexer is the functional reset as before. The second input is the DFT (test) controlled RESET and the select line (test mode) is used by DFT to switch to the controlled reset in test mode.

What is clock derate?

Timing derate numbers are ratios used to derate(increase/decrease) the delay numbers you get in your timing reports.

What is skew in CTS?

Skew is the difference in arrival of clock at two consecutive pins of a sequential element is called skew. Clock skew is the variation at arrival time of clock at destination points in the clock network.

What is clock latency in VLSI?

Definition of clock latency (clock insertion delay): In sequential designs, each timing path is triggered by a clock signal that originates from a source. … In general, clock latency (or clock insertion delay) is defined as the amount of time taken by the clock signal in traveling from its source to the sinks.

What is skew in VLSI?

Clock skew is a phenomenon in synchronous circuits in which the clock signal (sent from the clock circuit or source or clock definition point) arrives at different components at different times. due to. wire-interconnect length.

What is timing window in VLSI?

A timing window is the difference between the late and early arrival times for a signal at a node, and it is attributable to different paths through the nets. A voltage bump will only have an effect on operation if the timing windows of the aggressor and victim overlap (Figure 2).

What is cross talk in VLSI?

Crosstalk is a phenomenon, by which a logic transmitted in vlsi circuit or a net/wire creates undesired effect on the neighbouring circuit or nets/wires, due to capacitive coupling.

Why timing analysis is done?

Timing analysis must ensure that any clocks that are generated by the logic are clean, are of bounded period and duty cycle, and of a known phase relationship to other clock signals of interest. The clock must, for both high and low phases, meet the minimum pulse width requirements.

What is setup time and hold time?

Setup time is the amount of time required for the input to a Flip-Flop to be stable before a clock edge. Hold time is similar to setup time, but it deals with events after a clock edge occurs. Hold time is the minimum amount of time required for the input to a Flip-Flop to be stable after a clock edge.

What is critical path in VLSI?

The critical path is the longest path in the circuit and limits the clock speed. … Latency is the time needed for an input change to produce an output change; latency can be expressed as a length of time or, in synchronous circuits, as a certain number of clock cycles.