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4-kbyte boundary space

Note: This was originally posted on 22nd August 2012 at http://forums.arm.com

Hi there,
when I read AMBA AXI4 specification, the spec shows that "Bursts must not cross 4KB boundaries to prevent them from crossing boundaries between slaves and to limit the size of the address incrementer required within slaves". I don't understand about the boundary of 4KB and the relationship between this boundary to the number of slaves in the system. Can you explain that for me?
Many thanks!
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  • Note: This was originally posted on 22nd August 2012 at http://forums.arm.com

    Hi,
           when any write/read is word (32bits) addressable, then the max locations that can be addressed or accessed in a slave is 4K locations. In case read or write is byte addressable , then max location is 4Kbyte locations. Hence the limitation.

    Regards
Reply
  • Note: This was originally posted on 22nd August 2012 at http://forums.arm.com

    Hi,
           when any write/read is word (32bits) addressable, then the max locations that can be addressed or accessed in a slave is 4K locations. In case read or write is byte addressable , then max location is 4Kbyte locations. Hence the limitation.

    Regards
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