发明名称 |
REFERENCE VOLTAGE AND IMPEDANCE CALIBRATION IN A MULTI-MODE INTERFACE |
摘要 |
<p>A memory controller includes a transmit circuit coupled to an output node and a receive circuit coupled to an input node. The transmit circuit transmits first data to a memory device through the output node and the receive circuit is configured to receive second data from the memory device through the input node. The memory controller includes a calibration circuit and control logic coupled to the calibration circuit, where the calibration circuit and the control logic are configured to select a first reference voltage and a driver impedance for the transmit circuit and are configured to select a second reference voltage and a termination impedance for the receive circuit. The first reference voltage, the second reference voltage, the driver impedance and the termination impedance are selected from a set of pre-determined values, which are associated with different signaling modes for communication of the first data and the second data.</p> |
申请公布号 |
WO2009014796(A1) |
申请公布日期 |
2009.01.29 |
申请号 |
WO2008US64247 |
申请日期 |
2008.05.20 |
申请人 |
RAMBUS INC.;NGUYEN, HUY M.;GADDE, VIJAY;STOTT, BRET G. |
发明人 |
NGUYEN, HUY M.;GADDE, VIJAY;STOTT, BRET G. |
分类号 |
G11C11/4074 |
主分类号 |
G11C11/4074 |
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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