| 摘要 |
Disclosed is a virtual channel memory access controlling circuit for controlling accesses from a plurality of memory masters to a virtual channel memory having a plurality of channels, comprising: a channel information storing portion having a plurality of storage areas, each of the storage areas being assigned to any of the memory masters, each of the storage areas corresponding to each of the channels, each of the storage areas having a channel number and a memory address, the channel number identifying a channel, and the memory address being sent to the virtual channel memory; detector for detecting necessity of a change of assignment of storage area between memory masters; and changer for dynamically changing the assignment of the storage area between memory masters.
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