SED Commands
SED commands and their usages When we need to search, replace, insert, delete in a file then we use SED command. Opening a file in editor and then do search and replace will be lengthy process, to avoid this manual…
SED commands and their usages When we need to search, replace, insert, delete in a file then we use SED command. Opening a file in editor and then do search and replace will be lengthy process, to avoid this manual…
AWK and CUT commands and their usage AWK commands Before going to look at the commands and their usage lets understand why we need AWK, what was the requirement which led us to use AWK commands. So if we need…
GREP commands and their usages Before understanding about GREP lets understand why we need this and how this is helping us by saving our time from manual works. If I am looking for a particular string/specific pattern from a file…
List of Basic Linux Commands Create directory Mkdir is the command which we use to create directory, mkdir is short form of make directory. The command structure is as per below. mkdir <directory_name> Example mkdir ivlsi_physicalDesign Change Directory Change directory…
What are VIAs in VLSI? To connect between different metal layers, we need poly layer along with the metal layers that we are going to connect. These are basically called as VIAs. From the below picture we can see that…
Pitch The distance between the center to center of the metal is called as pitch. In the below picture, B is pitch. Spacing Spacing is the distance between the edge to edge metal layers. The distance A is spacing in…
What are Metal Layers? To route any PG/Clock/Signal we need metal layers. Metal layers connect the points of the two ends. There can be many numbers of metal layers which has been used to complete the routing. The number…
Overview of Routing We need the Clock Tree Synthesis database before going to the Route stage in physical design, where we have placed all the cells present in the design. Route creates physical connections to all the logical connections present…
What is Signal Integrity and Crosstalk? Let’s take one example. I am doing work from home in my study room attending meeting and my family is sitting in the TV room and watching some news. Even though I am sitting…
Integrated Clock Gating (ICG) Cell & Related Concepts We always have target to close the design by meeting the PPA (Power, Performance, Area). Clock consumes most of the power as it has high switching activities. Being specific, clock consumes almost…