Integrated circuit with transmit phase adjustment
AssigneeRambus Inc.
InventorsMark A. Horowitz, Richard M. Barth, Craig E. Hampel, Alfredo Moncayo, Kevin S. Donnelly, Jared L. Zerbe
Life of this patent
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Abstract
An integrated circuit that communicates with a plurality of other integrated circuit devices includes a transmitter circuit to transmit data to an external signal line and a first register to store a first value representative of a transmit phase adjustment that is used to adjust when the transmit data is transmitted. The first value is determined based on information specifying a configuration of the plurality of other integrated circuit devices.
Claims31
A method of operation in an integrated circuit device, the integrated circuit device coupled to one or more memory devices using one or more external signal lines, comprising:
- determining a configuration of the one or more memory devices coupled to the one or more external signal lines when there is an initiating event;
- determining a first value representative of a transmit signal setting of output driver in the integrated circuit device,
- storing the first value;
- and
- transmitting data synchronously with respect to a clock signal using the output driver, wherein the first value is determined in accordance with the configuration an the transmit signal setting of the output driver adjusts a transmit margin of the data.
A method of operation in a system, the system including an integrated circuit device coupled to a memory device using one or more external signal lines, comprising:
- determining a configuration of one or more memory devices coupled to the one or more external signal lines when there is an initiating event;
- determining a first value representative of a transmit signal setting of a first output driver in the integrated circuit device,
- storing the first value;
- transmitting data synchronously with respect to a first clock signal using the first output driver, wherein the first value is determined in accordance with the configuration and the transmit signal setting of the first output driver adjusts a transmit margin of the data;
- determining a second value representative of a receive signal setting of a first input receiver in the memory device,
- storing the second value;
- and
- receiving data samples at a sample time with respect to a second clock signal using the first input receiver, wherein the second value is determined in accordance with the configuration and the receive signal setting of the first input receiver adjusts receive margin of the data.
Dependencies are inferred from the claim text.