Patent ID: 11870612
Assignee: INTEL CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The method of claim 4, wherein the transmitter further includes an equalizer (TxEQ), the receiver includes an equalizer (RxEQ), and wherein calibration of the Rtx comprises:
operating the physical layer (PHY) for the communication link using a negotiated data rate mode;
adjusting a resistance of the Rtx over a range having multiple resistance values;
for each resistance value, equalizing the channel using the TxEQ and RxEQ for a maximum eye-opening of the received signal; and
determining when the eye of the receive signal meets one or more performance metrics specified for the communication link,
wherein the calibrated Rtx is set to the resistance value for Rtx when the eye of the received signal meets one or more performance metrics specified for the communication link.