发明名称 |
Method and apparatus synchronizing integrated circuit clocks |
摘要 |
Embodiments described herein include a method and system for synchronizing clocks between coupled integrated circuits (ICs) in a computer system. According to an embodiment, a dedicated timing pin is provided on a first IC. The first IC configures a second IC to change a pin assignment, so that the second IC interprets a signal sent on the timing pin by the first IC and received on the reassigned pin as a request to transmit a return signal. The return signal is received on the timing pin. The return signal is used to determine whether timing should be adjusted by the first IC. In an embodiment a clock and data recover (CDR) circuit compares the signal sent to the signal received in order to make the determination. In an embodiment the first IC is a processor-based device, and the second IC is a memory device controlled by the first device. |
申请公布号 |
US8443225(B2) |
申请公布日期 |
2013.05.14 |
申请号 |
US201213584560 |
申请日期 |
2012.08.13 |
申请人 |
NYGREN AARON;LEE MING-JU EDWARD;BARAKAT SHADI;XU XIAOLING;PHAM TOAN DUC;KRUGER WARREN FRITZ;LITT MICHAEL;ADVANCED MICRO DEVICES, INC.;ATI TECHNOLOGIES ULC |
发明人 |
NYGREN AARON;LEE MING-JU EDWARD;BARAKAT SHADI;XU XIAOLING;PHAM TOAN DUC;KRUGER WARREN FRITZ;LITT MICHAEL |
分类号 |
G06F1/12 |
主分类号 |
G06F1/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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