公开(公告)号：US20170187472A1

公开(公告)日：2017-06-29

申请号：US15385094

申请日：2016-12-20

Applicant: Broadcom Corporation

Inventor： Ahmad CHINI ,  Mehmet V. TAZEBAY

IPC: H04B15/00 ,  H04B3/50

CPC classification number: H04B15/005 ,  H04B3/50 ,  H04L69/08 ,  H04L69/323

Abstract: The present disclosure is directed to apparatuses for preventing significant amounts of common mode noise from a PHY transceiver, such as an Ethernet PHY transceiver, from coupling to an unshielded twisted-pair cable. The apparatuses can provide common mode noise isolation, while limiting any common mode noise to differential mode noise (CM-DM) conversion. Common mode noise is generally ignored by a PHY transceiver that receives a differential data signal because of differential signaling. However, when common mode noise is converted to differential mode noise, then data errors can result. Thus, limiting any CM-DM conversion is important.

公开(公告)号：US20170134149A1

公开(公告)日：2017-05-11

申请号：US15135302

申请日：2016-04-21

Applicant: Broadcom Corporation

Inventor： Ahmad CHINI ,  Mehmet V. TAZEBAY

IPC: H04L5/14 ,  H04L12/835 ,  H04B1/3822

CPC classification number: H04L5/14 ,  H04B1/3822 ,  H04L12/4035 ,  H04L47/30 ,  H04L2012/40273

Abstract: Currently, there exists low power Ethernet PHY solutions running at 10 Gbps over twin-ax cables with SFP+ connectors. However, the cost and range of these cables, along with the size of the connectors, do not match the requirements of in-vehicle networks. If the cable is replaced with a single pair of shielded or coaxial cables, a different mechanism is needed to provide bi-directional communication. Time division duplexing (TDD) can be used to emulate full duplex communication over the single pair of cables by taking turns, in time, transmitting data over the pair of cables in each direction.