发明授权
EP2008281B1 MULTI-PORT MEMORY DEVICE HAVING VARIABLE PORT SPEEDS 有权
多端口,不同的端口速度存储设备

  • 专利标题: MULTI-PORT MEMORY DEVICE HAVING VARIABLE PORT SPEEDS
  • 专利标题(中): 多端口,不同的端口速度存储设备
  • 申请号: EP07759902.5
    申请日: 2007-03-30
  • 公开(公告)号: EP2008281B1
    公开(公告)日: 2012-01-25
  • 发明人: LEE, DongyunCHO, Myung, RaiKIM, Sungjoon
  • 申请人: Silicon Image, Inc.
  • 申请人地址: 1060 East Arques Avenue Sunnyvale, California 94085 US
  • 专利权人: Silicon Image, Inc.
  • 当前专利权人: Silicon Image, Inc.
  • 当前专利权人地址: 1060 East Arques Avenue Sunnyvale, California 94085 US
  • 代理机构: Hackney, Nigel John
  • 优先权: US788401P 20060330
  • 国际公布: WO2007115227 20071011
  • 主分类号: G11C7/10
  • IPC分类号: G11C7/10 G11C8/16
MULTI-PORT MEMORY DEVICE HAVING VARIABLE PORT SPEEDS
摘要:
A multi-port memory device (100) having two or more ports (110) wherein each port may operate at a different speed. The multi-port memory device contains memory banks that may be accessed via the two or more ports. Two clock signals are applied to each port: a system clock (SCK) and a port clock (PCK). The system clock is applied to port logic (220) that interfaces with the memory banks so that the ports all operate at a common speed with respect to the memory banks. The port clock is applied to a clock divider circuit (230) that is associated with each port. The port clock is divided to a desired frequency or kept at its original frequency. Such a configuration allows the ports to operate at different speeds that may be set on a port-by-port basis.
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