Apparatus and method for slew rate control of MLT-3 transmitter using zero drive
US6243426A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1998 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Sep 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0266
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A transmitter within a line driver circuit is configured to supply data signals in compliance with the Multilevel Transmission-3 (MLT-3) protocol for high speed data communication. The transmitter comprises a pre-driver system and a final driver. The pre-driver system comprises a plurality of individual pre-drivers that are in parallel. A zero drive logic designates any number of individual pre-drivers as zero drive types, such that these designated zero drive pre-drivers are turned ON during a zero signaling state. The partially turned ON pre-driver system, during the zero state, permits the final driver to rapidly output positive and negative signals in accord with the MLT-3 protocol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.