instersil got out of WLAN years ago.
Yeah, Conexant bought the 802.11 technology from
Intersil in Sept of 2002. I don't know if their PRISM
stuff is actively pursued/supported. It sounds like the
agreement was to integrate the technology into DSL modems
but Intersil doesn't seem to have any reference to the
PRISM chipsets except to refer you to
Intersil bought Harris
Semiconductor in 1999 which of course, also included what
was left of GE Solid State and RCA.
At this rate,
Conexant should be ready to sell it to Lenovo sometime