Data transmission update technique in low power modes
First Claim
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1. A computer system having at least a portion capable of operating in a normal mode and a low power mode, comprising:
- a transmission link arranged to propagate a data signal and a clock signal; and
calibration circuitry, operatively connected to the clock signal and dependent on a power mode control signal, capable of updating a receipt time of the data signal, wherein the power mode control signal is indicative of whether the at least a portion is in the low power mode.
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Abstract
A data transmission update technique for use in a low power mode and/or a low activity mode of a computer system or a portion thereof is provided. When in the low power mode and/or the low activity mode, the technique initiates a testing of data transmissions, the results of which are used to adjust the timing of data receipt such that accurate and timely date communications are facilitated.
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Citations
20 Claims
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1. A computer system having at least a portion capable of operating in a normal mode and a low power mode, comprising:
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a transmission link arranged to propagate a data signal and a clock signal; and
calibration circuitry, operatively connected to the clock signal and dependent on a power mode control signal, capable of updating a receipt time of the data signal, wherein the power mode control signal is indicative of whether the at least a portion is in the low power mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for updating data communication, comprising:
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transmitting a clock signal and a data signal; and
latching the data signal dependent on an adjustable clock signal, wherein the adjustable clock signal is dependent on the clock signal;
when in a low power mode, transmitting a test pattern signal on the data signal, latching the test pattern signal to generate a latched test pattern signal, comparing the test pattern signal and the latched test pattern signal, and adjusting the adjustable clock signal dependent on the comparing. - View Dependent Claims (12)
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13. A computer system having at least a portion capable of operating in a low power mode and a normal mode, comprising:
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means for propagating a data signal and a clock signal;
means for latching the data signal dependent on an adjustable clock signal, wherein the adjustable clock signal dependent on the clock signal; and
means for adjusting the adjustable clock signal when in the low power mode. - View Dependent Claims (14)
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15. A computer system, comprising:
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a transmission link arranged to propagate a data signal and a clock signal; and
calibration circuitry operatively connected to the clock signal and capable of updating a receipt time of the data signal when the transmission link is in at least one of a low activity state and a low power mode. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification