Kunal – Page 16 – VLSI System Design

From VLSI to System Design (SoC) – The choice of SPI

SPI model is a master/slave model. There’s some SPI master which determines who gets to transmit and who gets to receive. The output from SPI master is called MOSI (Master Out Slave In). If you have 2 slaves, slave 1 and slave 2, as shown below, MOSI goes to all the slaves .Then you have another line MISO (Master In Slave Out). All the wires are connected, as shown in below image. Then you have a master only function called SCLK, which goes to all the slaves. Now also, there must be a slave select (SS) for S1 and a slave select for S2.

– 没有你的支持，这是不可能的

our company to move from LMS (Learning Management System) to EMS (EDA Management System), and finally we envision, very soon to be in DMS (Design Management System).Talking about ‘vsdflow’, it’s the main theme of this paper, and if I had to describe it in few lines, it’s a ‘plug and play (PnP)’ EDA management system, built for chip designers to implement their ideas and convert to GDSII.

PPA (power, performance, area) card

A PPA card like the above, is something which every VLSI engineer should be carrying like a business card. Why? Right from RTL to synthesis to PNR to signoff, we do things like upsize, downsize, VT swap, and many more, and all these factors impacts or tweaks your design PPA in one way or the other.
Let’s take an example of ‘downsize’

Committed in 2011, delivered in 2018

the flowchart is what you need to understand just to be an expert in the field of VLSI and semiconductors. Every topic shown in above image is a field, and every topic has a beautiful physics behind it, which when blended with tools in a video course, becomes a master-piece

Proton – An online PNR tool built out of trust and commitment

In start-up, many people do think commercial, while few think passion. Some of the long-lasting amazing products that you see around were built by normal, but passionate people around you. Now, Proton just fits there.Proton, A PNR tool, that can be accessed from below link:
http://www.webchip.in/?q=workbench

The Perfect Launch – By Kunal and Rajeev

We launched industry grade PNR EDA tool ‘Proton’ on web in front of 100 people across 7 countries, which I think, by far, has been a perfect launch for any partial open-source EDA tool.The below link has the details of the launch:
https://www.udemy.com/vsd-physical-design-webinar-using-eda-tool-proton/

Facts – About below open-source EDA tool

Why “integrated”? Because at lower nodes, you have to integrate other parts of the flow. Sign-off (you can see power and timing buttons below), clock tree synthesis (you can see synthesis button) must be integrated, so we have a fully integrated PnR flow that we built from day one.

Wanna quick solution to identify overflows? – Use RISC-V branches

The final instruction which is ‘bne’ is ‘branch if not equal’ which is essentially means to branch to a different address location pointed by ‘overflow’, if t3 is not equal to t4, which is the case here. So, here’s where the overflow is detected and an error message will be printed out, informing ‘you are out of range’

RISC-V cpu core – place & route at $0 – using industry grade EDA tools

a RISC-V cpu core is being placed using end-to-end opensource EDA tool. This is possible due constant effort and dedication by so many visionary people in industry, and will let you know all details about all of them very soon.

Bottoms up – From STA to RISC-V architecture

In on opensource RISC-V implementation flow, you move from right (Hardware) to Left (application program), and then coming from left, if you stop at middle (RISC-V ISA), that’s when you start thinking about this architecture from all angles, like sta, drc, congestion, clock skew, io latency, static and dynamic power, IR and many more