Altera Corporation

Harry Nguyen

Philippe Molson

Christopher D Finan

Michael Chen

One embodiment relates to an integrated circuit for a multiple-channel direct memory access system. The integrated circuit includes multiple direct memory access (DMA) controllers, each one corresponding to a different DMA channel. A channelizer receives descriptors from the DMA controllers. Fragmentation circuits in the channelizer fragment descriptors to generate multiple sub-descriptors therefrom, and the sub-descriptors may be sorted into priority queues. Another embodiment relates to a method of providing DMA transfers for multiple DMA channels using an integrated circuit. Another embodiment relates to a system for multiple-channel direct memory access. Other embodiments and features are also disclosed.

Apparatus and methods for multiple-channel direct memory access

One embodiment relates to an integrated circuit with a modular direct memory access system. A read data mover receives data obtained from a source address, and a write data mover for sends the data to a destination address. A descriptor controller provides the source address to the read data mover and the destination address to the write data mover. Another embodiment relates to a method of providing direct memory access. Another embodiment relates to a system which provides direct memory access. Other embodiments and features are also disclosed.

Growing community of inventors

Campbell, CA, United States of America

Harry Nguyen