Patent Number: 6,167,321

Title: Interface module with protection circuit and method of protecting an interface

Abstract: An interface module for a communications system includes a processing device and a peripheral device which are interconnected through a communications bus. The interface module includes a transceiver interface and a protection circuit. The protection circuit is positioned between the transceiver interface and a port configured to receive a signal from a terminal of the communications bus. The protection circuit is further configured to automatically provide a protection voltage to the transceiver interface if a power supply for the transceiver interface is inactive. The protection voltage is derived from the signal received at the terminal.

Inventors: Chan; Ting-Li (Laguna Niguel, CA), Tran; Thinh D. (Aliso Viejo, CA)

Assignee: QLogic Corporation

International Classification: G06F 13/40 (20060101); H03K 19/003 (20060101); G06F 013/00 ()

Expiration Date: 12/26/2017