CAMPBELL, CALIF. -Chip maker Equator Technologies Inc. said it raised more than $40 million during its fourth round of private equity funding, led by Ironside Venture Partners II LLC and Polycom Inc. A second closing could boost that figure to more than $50 million, the company said. Earlier this year, Equator and partner Hitachi Ltd. introduced the "MAP-CA," a third-generation, programmable processor for consumer appliances such as set-top boxes and residential gateways. The approach upgrades the silicon via software downloads rather than hardware switch-outs. The chipset went into production in April. Equator said it is working on a new processor, with samples hitting the street the second half of next year.