Patent ID: 11874788
Assignee: CADENCE DESIGN SYSTEMS, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. A PAM4 data transmission method comprising:
providing a most significant bit (“MSB”) main driver and a most significant bit boost driver operatively connected to the MSB main driver;
providing a least significant bit (“LSB”) main driver and a least significant bit boost driver operatively connected to the LSB main driver;
receiving two parallel non-return-to-zero (“NRZ”) data inputs at the MSB main driver and the LSB main driver; and
generating a PAM4 output signal, wherein the MSB boost driver applies a boost based upon, at least in part, a pulse amplitude modulation 4-level (“PAM 4”) transition level and wherein a magnitude of the boost differs between each of the 4 PAM4 transition levels.