Method and system for receiver detection in PCI-Express devices

Details Method and system for receiver detection in PCI-Express devices Method and system for receiver detection in PCI-Express devices

2007-06-12

2007-06-12

Auve, Glenn A. (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus expansion or extension

C710S071000

Reexamination Certificate

active

11100063

ABSTRACT:
A method and system for detecting when a receiver in a host system is present or absent to receive information from a PCI-Express device is provided. The method includes monitoring a signal received from a serial/de-serializer for transitions; re-starting a first timer when a transition is detected; and detecting a receiver's absence if a second timer has reached a maximum value after a transition is detected and a first timer cycle is incomplete. The PCI-Express device includes a receiver detection logic that determines when a receiver is absent before sending any data to the host system. The PCI-Express device may be a host adapter.

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PCI Express Base Specification Revision 1.0, PCI-SIG, Apr. 29, 2002, pp. 183,184, and 199-201.
PCI Express Base Specification Revision 1.0a; PCI-SIG; Apr. 15, 2003; pp. 171,172,204, and 205.

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