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resistion
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re: A modest proposal: Creating an automated IP marketplace
resistion   6/11/2012 1:04:31 AM
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Maybe best shot is with extremely mature IP (e.g., 0.5 um and earlier).

mcgrathdylan
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re: A modest proposal: Creating an automated IP marketplace
mcgrathdylan   6/8/2012 6:07:17 AM
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Thanks Frank as always for your insight. This is a very succinct explanation of the barriers to the Holy Grail of plug and play IP reuse. It seems like one of those things that sounds so good in theory, yet in practice is much more complicated.

old account Frank Eory
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re: A modest proposal: Creating an automated IP marketplace
old account Frank Eory   6/8/2012 1:00:18 AM
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It has been the dream for a long time, and no I don't think we are close to realizing it. This relates directly to the concept of IP re-use. There are indeed some digital IP blocks that can be and are re-used exactly as-is, no changes, with straight-forward implementation, timing closure and functional verification suites. The problems arise when "re-use" becomes "re-use with some changes". The changes don't necessarily even have to be inside the IP block, but rather in the surrounding environment (i.e., the other IP blocks to which it connects). When you assess the affect of the changes, no matter how small, now you've got real engineering work to do, and all bets are off, despite the pedigree of the IP and its history of successful use on other chips. In my experience, most IP re-use falls in the category of "re-use with changes." Sometimes the impact of the changes is so substantial that you end up starting over, perhaps even at the architecture level.

mcgrathdylan
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re: A modest proposal: Creating an automated IP marketplace
mcgrathdylan   6/8/2012 12:17:17 AM
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@Frank- hasn't that been the dream for a long time? Is it just pie in the sky, or can it be realized?

old account Frank Eory
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re: A modest proposal: Creating an automated IP marketplace
old account Frank Eory   6/7/2012 11:59:03 PM
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Typical short-sighted view that SoC implementation is just a matter of assembling Lego blocks.

mcgrathdylan
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re: A modest proposal: Creating an automated IP marketplace
mcgrathdylan   6/7/2012 3:21:17 PM
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Thanks Peter. I have to admit I do not recall this VCX initiative. Obviously it did not succeed (or else I probably would recall it). Any thoughts on why it didn't work?

Peter Clarke
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re: A modest proposal: Creating an automated IP marketplace
Peter Clarke   6/7/2012 8:55:20 AM
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Who remembers the Virtual Component Exchange (VCX)? In 1998 "Foundation laid for IP clearinghouse" http://www.eetimes.com/electronics-news/4036360/Foundation-laid-for-IP-clearinghouse In 2004 "System-level Beach acquires Scots IP portal company" http://www.eetimes.com/electronics-news/4123244/System-level-Beach-acquires-Scots-IP-portal-company



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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