Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus access regulation
Patent
1998-06-22
2000-09-19
Ray, Gopal C.
Electrical computers and digital data processing systems: input/
Intrasystem connection
Bus access regulation
710130, 710100, G06F 1338
Patent
active
061226971
ABSTRACT:
One aspect of the present invention provides a packer-unpacker (PUP) for a digital serial interface which allows a plurality of processors to access time slot registers of a serial data stream relating to the digital serial interface. A configuration register is maintained either by one of the plurality of processors or by each of the processors to arbitrate access to the individual time slot registers. Another aspect of the invention allows one or more processors to efficiently access and/or write more bits to a resource such as a time slot register than the width of the processor's respective data bus allows. Extra bits registers are maintained for at least one of the read and write direction data busses. The extra bits correspond to the least significant bits conventionally ignored in changing from a data bus of one width to a data bus of a narrower width. The extra bits in the write direction are accessed, e.g., by a write to a write direction extra bits register addressable through a specific input/output (I/O) location. The extra bits are tacked on to a subsequent write cycle in the digital serial interface, e.g., in the AC '97 link, to write an excess length data word.
REFERENCES:
patent: 5280598 (1994-01-01), Osaki et al.
patent: 5300811 (1994-04-01), Suzuki et al.
patent: 5337409 (1994-08-01), Sakata
patent: 5548766 (1996-08-01), Kaneko et al.
patent: 5671373 (1997-09-01), Prouty et al.
patent: 5812798 (1998-09-01), Moyer et al.
Analog Devices et al., "Audio Codec '97; Component Specification; Revision 1.03; Sep. 15, 1996", Sep. 15, 1997.
Intel Corporation, "Audio Codec '97; Revision 2.0, Sep. 29, 1997", Sep. 29, 1997.
Bollman William H.
Lucent Technologies - Inc.
Ray Gopal C.
LandOfFree
System for extending the width of a data bus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for extending the width of a data bus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for extending the width of a data bus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1083890