Altera Corporation

Geok Sun Chong

David Wolk Mendel

Boon Jin Ang

Kar Keng Chua

Han Hua Leong

Ru Yin Ng

Kok Yoong Foo

Yan Jiong Boo

A control system controls First-In First-Out (FIFO) settings of a receiving system. The control system includes a FIFO settings controller that receives a first signal indicative of a first frequency of data received by the receiving system. The FIFO settings controller receives a second signal indicative of a second frequency of a clock that reads the data received by the receiving system. The FIFO settings controller determines a difference (e.g., a parts-per-million (PPM) difference) between the first frequency and the second frequency. The FIFO settings controller sends a third signal indicative of instructions to adjust FIFO configuration settings based on the PPM difference.

Adaptive rate-matching first-in first-out (FIFO) system

Circuits for a multiplier with a built-in accumulator and a method of performing multiplication with accumulation are disclosed. An embodiment of the disclosed circuits includes a logic circuit coupled to receive two inputs. The logic circuit is capable of generating a plurality of value bits from the inputs received. In one embodiment, the logic circuit includes a Booth recoder circuit that generates a plurality of partial products. A block of adders is coupled to logic circuit to receive and sum up the value bits. An adder adds the summation result from the block of adders to a previous accumulated value to generate intermediate sum and carry values. An accumulator, coupled to the adder, receives and stores the intermediate values.

Multiplier with built-in accumulator

Growing community of inventors

Bayan Lepas, Malaysia

Geok Sun Chong