Once upon a time, ASIC designers were integrating memories in their design (using a memory compiler being part of the design tools provided by the ASIC vendor), then they had to make the memory observable, controllable… and start developing the test program for the function, not a very enthusiastic task (“AAAA” and “5555” and other… Read More
Ever since the failed Intel PR stunt where Mark Bohr suggested that the fabless semiconductor ecosystem was collapsing I have been researching and writing about it. The results will be a book co-authored by Paul McLellan. You may have noticed the “Brief History of” blogs on SemiWiki which basically outline the book. If not, start… Read More
The creation of test patterns for mixed signal IP has been, to a large extent, a manual effort. To improve the process used to test, access, and control embedded IP, a new IEEE P1687 standard is being defined by a broad coalition of IP vendors, IP users, major ATE companies, and all three major EDA vendors. This new standard, also called… Read More
Until now, the integration and testing of IP blocks used in large SOCs has been a manual, time consuming design effort. A new standard called IEEE P1687 (or “IJTAG”) for IP plug-and-play integration is emerging to simplify these tasks. EDA tools are also emerging to support the new standard. Last week mentor announcedTessent IJTAG,… Read More
I attended the Jasper User Group this week, at least the keynotes, the first by Kathryn Kranen the CEO of Jasper and the second by Bob Bentley of Intel.
Kathryn went over some history, going back to when the company was started (under the name Tempus Fugit) back in August 2002 with a single product for protocol verification. Now, since… Read More
Verification and AMS are top search terms on SemiWiki so clearly designers have a pressing need for fast and accurate verification of today’s mixed-signal SoCs that include massive digital blocks and precision analog/RF circuits. They need simulation performance to verify the mixed-signal functionality, and they need nanometer… Read More
One technology that has quietly gone mainstream in semiconductor design is FPGA prototyping. That is, using an FPGA version of the design to run extensive verification. There are two approaches to doing this. The first way is simply to build an prototype board, buy some FPGAs from Xilinx or Altera and do everything yourself. The… Read More
Analog Mixed-Signal (AMS) behavioral models have not caught on with the AMS designer community. Why? I suspect a significant reason (but certainly not the only one) is the way they are presented.
First, what is AMS behavioral modeling?
I define it as “a set of user-defined equations that decribe the terminal behavior of a component”.… Read More
Modern SoC (System On Chip) designs contain a larger number of RAM (Random Access Memory) instances, so how do you know what the speed, timing and power are for any instance? There are a couple of approaches:
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At ICCAD earlier this week, CEDA sponsored a talk by Alberto Sangiovanni-Vincentelli looking back over the last 30 years (it is the 30th anniversary of ICCAD) and looking to the future. As is always the case in these sorts of presentations, the retrospective contained a lot more detail than the going forward part. Clayton Christensen… Read More
