Patent ID: 7408378

Claim:
An integrated circuit die to communicate data over a plurality of communication channels, the integrated circuit die comprising: a. a current source having a plurality of calibration-current output nodes providing a corresponding plurality of calibration currents; b. a plurality of pads to connect to the communication channels; and c. a plurality of communication circuits to communicate the data over the communication channels via the pads, each communication circuit including: i. a first calibration-circuit input node coupled to a respective one of the calibration-current output nodes and receiving one of the calibration currents; ii. a second calibration-circuit input node coupled to a reference resistor; iii. a calibration-circuit output port providing a termination-control signal; and iv. a termination element exhibiting a termination characteristic and including a termination control port coupled to the calibration-circuit output port and receiving the termination-control signal.