发明授权
- 专利标题: Concurrent memory bank access and refresh retirement
- 专利标题(中): 并发记忆库访问和刷新退休
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申请号: US12635543申请日: 2009-12-10
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公开(公告)号: US08151044B2公开(公告)日: 2012-04-03
- 发明人: Robert Proesbsting
- 申请人: Robert Proesbsting
- 申请人地址: US DE Wilmington
- 专利权人: Intellectual Ventures I LLC
- 当前专利权人: Intellectual Ventures I LLC
- 当前专利权人地址: US DE Wilmington
- 代理机构: Schwabe, Williamson & Wyatt, P.C.
- 主分类号: G06F12/00
- IPC分类号: G06F12/00
摘要:
A dynamic random access memory integrated circuit and method includes internal refresh control and an array configured to receive read and write access requests having priority over pending refresh requests, wherein refresh requests are queueable and retired on clock cycles not requiring an access of the array and complete in one clock cycle. No on-board cache memory is required. A method includes: determining within the circuit when one of the banks of the array requires a refresh, prioritizing read and write access requests over pending refresh requests, read access requests initiating an access to the array without determining whether data is available from outside the array, and retiring within a clock cycle one pending refresh request to a bank when that bank has pending refresh requests and does not also require an access of the array on that clock cycle.
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