ADAPTIVE OUTPUT SWING DRIVER
First Claim
Patent Images
1. A method for adjusting an output swing of a driver, comprising:
- generating a target swing measurement signal;
generating a swing measurement signal based on a magnitude of the output swing; and
controlling the output swing based on the swing measurement signal and the target swing measurement signal.
1 Assignment
0 Petitions
Accused Products
Abstract
An adjustable gain line driver receives an input signal and a gain control signal and outputs a signal with a swing, and the swing is measured to generate a swing measurement signal. A target swing signal is generated having a target swing, and the target swing signal is measured to generate a target swing reference signal. The swing measurement signal is compared to the target swing reference control signal and a counter generating the gain control signal is incremented until the measurement signal meets the target swing reference signal. Optionally a reset signal resets the counter, and the gain control signal, at predetermined events.
-
Citations
46 Claims
-
1. A method for adjusting an output swing of a driver, comprising:
-
generating a target swing measurement signal; generating a swing measurement signal based on a magnitude of the output swing; and controlling the output swing based on the swing measurement signal and the target swing measurement signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A driver swing adjustment apparatus for a driver having a signal input, a signal output, and a swing control input, comprising:
-
a swing measurement circuit coupled to the signal output, for generating a swing measurement signal according to a swing on the signal output; a target swing measurement circuit for generating a target swing measurement signal according to a target swing reference voltage; and a feedback signal generator for providing a control signal to the swing control input, based on the swing measurement signal and the target swing measurement signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. An adjustable swing cable driver apparatus for a driver having a signal input, differential signal outputs, and a swing control input, comprising:
-
a selectable output impedance matching bridge coupling the differential signal outputs; a swing measurement circuit coupled to the differential signal outputs, for generating a swing measurement signal according to a swing on the signal output; a target swing signal generator for generating a target swing measurement signal according to a target reference swing; and a feedback signal generator for providing a control signal to the swing control input, based on the swing measurement signal and the target swing measurement signal.
-
-
23. A method for adjusting an output swing of a driver, comprising:
-
step of generating a target swing measurement signal; step of generating a swing measurement signal based on a magnitude of the output swing; and step controlling the output swing based on the swing measurement signal and the target swing measurement signal. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
-
-
35. An apparatus for adjusting an output swing of a driver, comprising:
-
means for generating a target swing measurement signal; means for generating a swing measurement signal based on a magnitude of the output swing; and means for controlling the output swing based on the swing measurement signal and the target swing measurement signal. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
-
Specification