- 专利标题: Distribution of bank accesses in a multiple bank DRAM used as a data buffer
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申请号: US09792605申请日: 2001-02-23
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公开(公告)号: US06532185B2公开(公告)日: 2003-03-11
- 发明人: Jean Louis Calvignac , Peter Irma August Barri , Ivan Oscar Clemminck , Kent Harold Haselhorst , Marco C. Heddes , Joseph Franklin Logan , Bart Joseph Gerard Pauwels , Fabrice Jean Verplanken , Miroslav Vrana
- 申请人: Jean Louis Calvignac , Peter Irma August Barri , Ivan Oscar Clemminck , Kent Harold Haselhorst , Marco C. Heddes , Joseph Franklin Logan , Bart Joseph Gerard Pauwels , Fabrice Jean Verplanken , Miroslav Vrana
- 主分类号: G11C800
- IPC分类号: G11C800
摘要:
Network processors commonly utilize DRAM chips for the storage of data. Each DRAM chip contains multiple banks for quick storage of data and access to that data. Latency in the transfer or the ‘write’ of data into memory can occur because of a phenomenon referred to as memory bank polarization. By a procedure called quadword rotation, this latency effect is effectively eliminated. Data frames received by the network processor are transferred to a receive queue (FIFO). The frames are divided into segments that are written into the memory of the DRAM in accordance with a formula that rotates the distribution of each segment into the memory banks of the DRAM.
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