发明授权
US07929361B2 Circuit using a shared delay locked loop (DLL) and method therefor
有权
电路使用共享延迟锁定环(DLL)及其方法
- 专利标题: Circuit using a shared delay locked loop (DLL) and method therefor
- 专利标题(中): 电路使用共享延迟锁定环(DLL)及其方法
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申请号: US12059613申请日: 2008-03-31
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公开(公告)号: US07929361B2公开(公告)日: 2011-04-19
- 发明人: Shawn Searles , Faisal A. Syed , Nicholas T. Humphries
- 申请人: Shawn Searles , Faisal A. Syed , Nicholas T. Humphries
- 申请人地址: US CA Sunnyvale
- 专利权人: Advanced Micro Devices, Inc.
- 当前专利权人: Advanced Micro Devices, Inc.
- 当前专利权人地址: US CA Sunnyvale
- 主分类号: G11C7/00
- IPC分类号: G11C7/00
摘要:
A transceiver (222) includes a receive circuit (320), a transmit circuit (340), a shared delay locked loop (DLL) (360), and a controller (210). The receive circuit (320) has a first input coupled to an external data terminal, a second input coupled to an external data strobe terminal, and an output coupled to an internal data terminal. The transmit circuit (340) has a first input coupled to the internal data terminal, a second input for receiving an internal clock signal, a first output coupled to the external data terminal, and a second output coupled to the external data strobe terminal. The controller (210) enables the shared DLL (360) for use by the receive circuit (320) during a receive cycle, and enables the shared DLL (360) for use by the transmit circuit (340) during a transmit cycle.
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