Host controller including a disconnection detection circuit

Details Host controller including a disconnection detection circuit Host controller including a disconnection detection circuit

2006-08-07

2010-06-29

Rinehart, Mark (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus expansion or extension

C710S015000, C710S302000, C710S305000

Reexamination Certificate

active

07747807

ABSTRACT:
A host controller includes a disconnection detection circuit52which compares a voltage level of a first differential signal DP of first and second differential signals DP and DM making up a differential signal pair corresponding to a given range in a frame packet with a comparison voltage CV, compares a voltage level of the second differential signal DM corresponding to a given range in the frame packet with the comparison voltage CV, and detects that a host and a device have been disconnected when the voltage level of at least one of the first and second differential signals DP and DM corresponding to the given range is higher than the comparison voltage CV.

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