Transmitting device using calibration circuit, semiconductor apparatus and system including the same
AssigneeSK hynix Inc.
InventorHae Kang JUNG
Life of this patent
Estimating the term…
Abstract
A transmitting device includes a calibration circuit and a transmission circuit. The calibration circuit generates calibration codes by performing a calibration operation. The calibration circuit also generates compensation calibration codes by increasing or decreasing values of the calibration codes according to whether a number of codes among the calibration codes having a predetermined level is greater than or equal to a threshold value. The transmission circuit drives a signal transmission line based on an input signal and the compensation calibration codes.
Claims19
A transmitting device comprising:
- a calibration circuit configured to generate calibration codes by performing a calibration operation and configured to generate compensation calibration codes by increasing or decreasing values of the calibration codes when a number of codes among the calibration codes having a predetermined level is greater than or equal to a threshold value, such that a number of codes among the compensation calibration codes having the predetermined level is less than the threshold value;
- and
- a transmission circuit configured to drive a signal transmission line based on an input signal and the compensation calibration codes.
A transmitting device comprising:
- a calibration circuit configured to generate calibration codes by performing a calibration operation, configured to generate converted calibration codes by increasing or decreasing values of the calibration codes based on whether a number of codes among the calibration codes having a predetermined level is greater than or equal to a threshold value, such that a number of codes among the converted calibration codes having the predetermined level is less than the threshold value, and configured to generate compensation calibration codes from the calibration codes or the converted calibration codes according to an operation mode signal;
- and
- a transmission circuit configured to drive a signal transmission line based on an input signal and the compensation calibration codes.
A transmitting device comprising:
- a calibration circuit configured to generate calibration codes by performing a calibration operation and configured to generate compensation calibration codes by changing the calibration codes when a number of codes among the calibration codes having a predetermined level is greater than or equal to a threshold value, such that a number of codes among the compensation calibration codes having the predetermined level is less than the threshold value;
- and
- a transmission circuit configured to drive a signal transmission line based on an input signal and the compensation calibration codes, wherein the transmission circuit comprises a main driver having a pull-up resistance and a pull-down resistance set based on the compensation calibration codes.
Dependencies are inferred from the claim text.