Title:
UBS HOST CONTROLLER WITH DMA CAPABILITY
Document Type and Number:
WIPO Patent Application WO2004102407
Kind Code:
A3
Abstract:
An embedded host controller, for use in a USB system comprising a processor and an associated system memory, comprises a DMA controller, and the host controller is adapted such that, in order to retrieve data from the associated system memory, a starting address and block length are sent to the DMA controller, and the DMA controller is adapted such that, on receipt of a starting address and block length sent from the host controller, it retrieves the indicated data from the associated system memory. This has the advantage that the embedded host controller can be used with different host microprocessors, without assuming that PCI functionality is available.
Inventors:
LEE CHEE E (SG)
SOCOL CONSTANTIN (SG)
TJIA JEROME (SG)
SOCOL CONSTANTIN (SG)
TJIA JEROME (SG)
Application Number:
PCT/IB2004/050643
Publication Date:
January 06, 2005
Filing Date:
May 12, 2004
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
LEE CHEE E (SG)
SOCOL CONSTANTIN (SG)
TJIA JEROME (SG)
LEE CHEE E (SG)
SOCOL CONSTANTIN (SG)
TJIA JEROME (SG)
International Classes:
G06F13/28; G06F13/38; (IPC1-7): G06F13/38; G06F13/28
Foreign References:
| US20020178310A1 | 2002-11-28 | |||
| US6266715B1 | 2001-07-24 | |||
| US4987529A | 1991-01-22 |
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