Apparatus and method of controlling driving current of transmission
AssigneeRealtek Semiconductor Corp.
InventorsKuang-Yu Yen, Chih-Hung Tsai
Life of this patent
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Abstract
A method of tuning a driving current of a data transmission interface includes: utilizing a driving current with a present current value to continuously send a test data to a receiving end; accumulating a number of times that the test data is sent to generate a transmission counting result; determining whether a transmission error occurs while the test data is sent to the receiving end and accumulating a number of times that the transmission error occurs to generate a transmission error counting result; and when the transmission counting result reaches a predetermined value, determining how to tune the present current value of the driving current according to the transmission error counting result.
Claims18
A method of tuning a driving current of a data transmission interface, comprising:
- utilizing a driving current having a present current value to continuously send a test data from the data transmission interface to a receiving end;
- accumulating a number of times that the test data is sent to generate a transmission counting result;
- determining whether a transmission error occurs while the test data is sent to the receiving end and accumulating a number of times that the transmission error occurs to generate a transmission error counting result;
- and
- when the transmission counting result reaches a predetermined value, determining how to tune the present current value of the driving current according to the transmission error counting result.
A driving apparatus, comprising:
- a driving circuit, for providing a driving current having a present current value in order to continuously send a test data from a data transmission interface to a receiving end;
- a control unit, for determining whether a transmission error occurs while the test data is sent to the receiving end;
- and
- a transmission error counting unit, coupled to the control unit, for accumulating a number of times that the transmission error occurs to generate a transmission error counting result according to the determination of the control unit;
- wherein when a transmission counting result corresponding to a number of times the test data is sent reaches a predetermined value, the control unit determines how to tune the present current value of the driving current according to the transmission error counting result.
Dependencies are inferred from the claim text.