Patent · US Active

Apparatus and methods for multiple-channel direct memory access

US9684615B1 · kind B1 · utility

10Cited by

12References

18Claims

0Family size

Assignee

Altera Corporation · US

Inventors

Harry Nguyen · Westminster, US
Philippe Molson · San Jose, US
Michael Chen · Bloomfield Hills, US

Key dates

Filing date	Jan 8, 2015
Grant date	Jun 20, 2017
Priority date	—
Expiry date	Oct 31, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG06F13/30
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.