Signalling accommodation
First Claim
1. A method for calibrating reception, comprising:
- sending a first data pattern to a first external point;
instructing the first external point to transmit the first data pattern back;
determining a first common mode voltage of a first data signal carrying the first data pattern back;
determining a first calibration value based on the action of determining a first common mode voltage of a first data signal; and
storing the first calibration value in association with a first identification of the first external point.
1 Assignment
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Accused Products
Abstract
A receiving unit may implement voltage compensation using a parameters table, an analog calibration component, and/or a digital calibration component. In certain implementation(s), an integrated circuit may include a voltage driver that modifies a supplied compensated voltage based on a feedback signal. The feedback signal may be produced responsive to a distributed voltage version of the compensated voltage, to a received data signal, and to a comparison involving an expected data value. In other implementation(s), a parameters table may be initialized by storing calibration values in entries in association with respective multiple identifications of multiple external points. In still other implementation(s), a particular calibration value of multiple calibration values may be ascertained, with the particular calibration value associated with a particular external point; the particular calibration value may be activated; and data from the particular external point may be received using the particular calibration value. Other implementations are also described.
23 Citations
25 Claims
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1. A method for calibrating reception, comprising:
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sending a first data pattern to a first external point;
instructing the first external point to transmit the first data pattern back;
determining a first common mode voltage of a first data signal carrying the first data pattern back;
determining a first calibration value based on the action of determining a first common mode voltage of a first data signal; and
storing the first calibration value in association with a first identification of the first external point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for voltage compensation, comprising:
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determining a first compensation value based, at least partly, on a first signal received from a first external point;
storing the first compensation value in association with a first identification of the first external point;
determining a second compensation value based, at least partly, on a second signal received from a second external point; and
storing the second compensation value in association with a second identification of the second external point. - View Dependent Claims (13, 14)
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15. A method for initializing and operating a system having at least receiving functionality, comprising:
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executing an initialization, the initialization comprising;
sending at least one data pattern to a plurality of external points;
instructing the plurality of external points to transmit the at least one data pattern back in a respective plurality of signals;
determining a respective plurality of calibration values for the plurality of external points responsive to receipt of the respective plurality of signals; and
storing the respective plurality of calibration values in association with a respective plurality of identifications of the plurality of external points; and
implementing an operational phase, the operational phase comprising;
determining that data is to be received from a particular external point of the plurality of external points;
ascertaining a particular calibration value of the plurality of calibration values, the particular calibration value associated with the particular external point;
activating the particular calibration value; and
receiving the data from the particular external point using the particular calibration value. - View Dependent Claims (16, 17, 18, 19)
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20. A method for receiving data, comprising:
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determining a need to request first data from a first external point;
ascertaining that a first calibration value is associated with the first external point;
activating the first calibration value;
requesting the first external point to transmit the first data; and
receiving the first data from the first external point using the first calibration value. - View Dependent Claims (21, 22, 23, 24)
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25. An integrated circuit configured to perform actions comprising:
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determining a need to request first data from a first external point;
ascertaining that a first calibration value is associated with the first external point from a parameters data structure;
activating the first calibration value;
requesting the first external point to transmit the first data;
receiving the first data from the first external point using the first calibration value;
determining a need to request second data from a second external point;
ascertaining that a second calibration value is associated with the second external point from the parameters data structure;
activating the second calibration value;
requesting the second external point to transmit the second data; and
receiving the second data from the second external point using the second calibration value.
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Specification