Patent ID: 9711239
Date: 2017-07-18
CPC Classifications: G11C,H03M

Claim:
1. An apparatus comprising: a first receiver to receive a first voltage reference (Vref) and a first data signal on a first pin of the apparatus; a second receiver to receive a second Vref and a second data signal on a second pin of the apparatus; a first circuit coupled to the first receiver, the first circuit to generate the first Vref based on a first digital value calibrated during an initial calibration of the apparatus; a second circuit coupled to the second receiver, the second circuit to generate the second Vref based on a second digital value calibrated during the initial calibration; a calibration controller coupled to the first circuit and the second circuit, the calibration controller to receive an external Vref on a third pin of the apparatus and to generate a third Vref based on a third digital value calibrated during the initial calibration, wherein the calibration controller, during a periodic calibration of the apparatus, is to: