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Abrizio was a fabless semiconductor company which made switching fabric chip sets (integrated circuits for computer network switches). Its chip set, the TT1, was used by several large system development companies as the core switch fabric in their high value communication systems.2 It was founded by Nick McKeown.1 Wikipedia text CC BY-SA 4.0
Last updated Oct 21, 2026.
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Abrizio was a fabless semiconductor company which made switching fabric chip sets (integrated circuits for computer network switches). Its chip set, the TT1, was used by several large system development companies as the core switch fabric in their high value communication systems.2
Founded by Nick McKeown in 1997.1
Abrizio was founded in 1997, by Professor Nick McKeown as a spinout of the Tiny-tera project at Stanford University. It received US$6M of funding from Benchmark Capital and Sequoia Capital.
From Wikipedia’s article on Abrizio, shared under CC BY-SA 4.0.3
Who has led Abrizio, and when. Pick a name to see everywhere that person has worked.
The product name TT1 referred to "Tiny Tera" meaning a small, highly integrated semiconductor implementation of a terabit/s capacity switching fabric. The Stanford program demonstrated a scalable packet switch that had a terabit-per-second performance in CMOS. Abrizio was the first to introduce a more optimized Input-Buffered Output Queued Switch Fabrics, which addressed the memory efficiency issue of similar technologies. Its technology made better use of memory, making the TT1 a less expensive product. Abrizio's key technology was a sophisticated implementation of a Wavefront arbiter which allowed the switch to make complex arbitration decisions very quickly.
From Wikipedia’s article on Abrizio, shared under CC BY-SA 4.0.3
Abrizio was acquired on August 24, 1999, by PMC-Sierra for 4,352,000 shares of PMC-Sierra stock, worth at that time $400M. After the acquisition, the former Abrizio development team completed the TTx switch chip set. In the wake of the bursting of the telecom bubble, PMC-Sierra laid off most of the former Abrizio team in 2001.
From Wikipedia’s article on Abrizio, shared under CC BY-SA 4.0.3
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