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Bus Matrix

Felix Varghese
Note: This was originally posted on 28th January 2009 at http://forums.arm.com

What exactly is a bus matrix? I came across the term in ARM cortex M3 specs but couldnt find any proper description. Can someone help?
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  • 0 Arm Employee Badge
    Note: This was originally posted on 28th January 2009 at http://forums.arm.com

    The bus is the "glue" that links all of the components (process, memory, etc) together and enables them to communicate.

    More modern ASIC designs have a complex N-to-M bus mapping (multiple masters, with multiple slaves, but not everything can see everything else). This assignment is a little like a matrix (rows are masters, slaves are columns, and each cell determines the visbility of that slave to that master).
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  • 0 Arm Employee Badge
    Note: This was originally posted on 28th January 2009 at http://forums.arm.com

    The bus is the "glue" that links all of the components (process, memory, etc) together and enables them to communicate.

    More modern ASIC designs have a complex N-to-M bus mapping (multiple masters, with multiple slaves, but not everything can see everything else). This assignment is a little like a matrix (rows are masters, slaves are columns, and each cell determines the visbility of that slave to that master).
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