Serial bus host controller diagnosis

Details Serial bus host controller diagnosis Serial bus host controller diagnosis

2006-10-31

2006-10-31

Baderman, Scott (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S043000

Reexamination Certificate

active

07131035

ABSTRACT:
A diagnosis mechanism for host controllers such as USB (Universal Serial Bus) host controllers is provided. The host controller has a register set that comprises at least one host controller capability register storing data indicative of operational capabilities of the host controller, and at least one host controller operational register storing data for controlling the operation of the host controller. The at least one host controller capability register stores data that is indicative of available diagnostic modes that the host controller can enter. The at least one host controller operational register stores diagnosis data for controlling the operation of the USB host controller in diagnostic modes. This diagnosis mechanism may improve the reliability of the host controller operation.

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“Enhanced Host Controller Interface Specification for Universal Serial Bus, Rev. 1.0”, Intel Corporation, US, Mar. 12, 2002, pp. 13-30 and pp. 135-145.

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