Back to results
US 2010/0244891 A1Published application
Integrated circuits and methods for providing impedance of driver to drive data
AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorYing-Yu HSU
Life of this patent
Estimating the term…
Abstract
An integrated circuit includes a pad coupled with a driver. The driver is capable of driving data to the pad. The driver is capable of providing a first set of resistance data substantially fitting to a first curve and a second set of resistance data substantially fitting to a second curve. A portion of at least one of the first set of resistance data and the second set of resistance data is an impedance of the driver to drive data
Claims20
An integrated circuit comprising:
- a pad;
- and
- a driver coupled with the pad, the driver being capable of driving data to the pad, the driver being capable of providing a first set of resistance data substantially fitting to a first curve and a second set of resistance data substantially fitting to a second curve, wherein a portion of at least one of the first set of resistance data and the second set of resistance data is an impedance of the driver to drive data.
An integrated circuit comprising:
- a pad;
- and
- a driver coupled with the pad, the driver being capable of driving data to the pad, wherein the driver comprises:
- a first set of post-driver transistors having at least one first post-driver transistor coupled with a first power source;
- a first set of impedance devices having at least one first impedance device coupled with the first set of post-driver transistors and the pad;
- a second set of post-driver transistors having at least one second post-driver transistor coupled with the first power source;
- a second set of impedance devices having at least one second impedance device coupled with the second set of post-driver transistors and the pad;
- and
- a third set of post-driver transistors having at least one third post-driver transistor coupled with a node between the first set of post-driver transistors and the first impedance device.
6 more elements
A method of providing an impedance of a driver to drive data, the method comprising:
- providing a plurality of codes to the driver to provide a first set of resistance data substantially fitting to a first curve and a second set of resistance data substantially fitting to a second curve, wherein the lowest resistance of the first set of the resistance data is lower than the highest resistance of the second set of the resistance data;
- and
- selecting a portion of at least one of the first set of resistance data and the second set of resistance data as the impedance of the driver for driving data.
Dependencies are inferred from the claim text.