SAN JOSE, Calif. (AP) — Integrated Device Technology Inc. on Thursday reported a loss for its fiscal fourth-quarter due to a drop in revenue and a major writedown in the value of the company.

For the quarter that ended March 29, the communications chip maker reported a loss of $719.2 million, or $4.37 per share, compared with a profit of $17.1 million, or 10 cents per share, in the year-ago period.

When excluding certain items, like a $686.6 million non-cash charge that IDT recorded as a writedown in the company's value, IDT's loss was 2 cents per share. That is slightly better than the loss of 3 cents analysts polled by Thomson Reuters expected.

Revenue fell 39 percent to $107.4 million, coming in just ahead of the $106.9 million analysts expected.

For the full fiscal year, IDT's loss totaled $1.04 billion, or $6.21 per share, compared with a profit of $34.2 million, or 18 cents per share, in the prior year.

Revenue fell 15 percent to $663.2 million.

IDT also said it agreed to buy Canadian rival Tundra Semiconductor Corp. for 6.25 Canadian dollars ($5.17) per share. That is a 14 percent premium over Tundra's closing share price last Friday on the Toronto Stock Exchange, before IDT made its offer public early Monday. The deal's total value is 120.8 million Canadian ($99.8 million).

And Mountain View, Calif.-based NetLogic Microsystems Inc., which designs chips used in network equipment, said Thursday that it will buy IDT's network search engine assets for $90 million and the cost of inventory on hand when the deal closes.

When the deal is finalized, NetLogic also has the option of paying the total purchase price in cash or $60 million plus the cost of inventory in cash and issue IDT a $30 million secured promissory note that is payable in equal installments. Those installments would be due on the first and second anniversaries of the deal's closing date.

The deal has been approved by both companies' boards and is expected to close before the end of the third quarter.