Silistix, a San Jose, Calif.-based provider of software and related circuit designs for on-chip communications solutions, has held a $6 million final close to its Series A round. Backers include Intel Capital, British Smaller Technology Companies VCT, The Northwest Business Investment Scheme, Seven Spires Investment, Partnerships UK and The Manchester Technology Fund. Silistix is a spinout from the < ?xml:namespace prefix = st1 />University of Manchester.