Network transceiver using signal detect input to control modes of operation
US6618392B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1999 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Apr 13, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/3054
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A novel method of operating a physical layer device in a local area network, such as one conforming to Ethernet protocol, to make a single physical layer device compatible with Physical Media Dependent (PMD) devices operating over different network media types. The methodology involves monitoring signal detect inputs and based on their levels, automatically reconfiguring the physical layer device to support interface to a required PMD device. In a preferred embodiment, a physical layer device in a network transceiver for interconnecting a hub device and PMD devices has first transmitting and receiving paths for supporting interface to a first PMD device, such as 100 BASE-TX, and second transmitting and receiving paths for supporting interface to a second PMD device, such as 100 BASE-FX.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.