Controller, program and methods for communicating with...

Details Controller, program and methods for communicating with... Controller, program and methods for communicating with...

2009-01-27

2011-10-04

Tsai, Henry (Department: 2184)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral configuration

C710S014000, C710S062000, C710S072000

Reexamination Certificate

active

08032665

ABSTRACT:
A controller coupled to a redundant array of inexpensive disks (RAID) includes a processor and a non-volatile memory element. The processor has an input/output port that is configurable in one of an open-drain driver configuration, a high-impedance driver configuration and a totem-pole driver configuration. The totem-pole driver configuration is capable of supplying sufficient current to operate a slave device coupled to the input/output port. Firmware stored in the non-volatile memory device dynamically adjusts the driver configuration to prevent negative voltage swings in a signal communicated via the input/output port.

REFERENCES:
patent: 5239627 (1993-08-01), Beck et al.
patent: 6480924 (2002-11-01), Bengtsson et al.
patent: 7248597 (2007-07-01), Kim
patent: 2005/0046457 (2005-03-01), Pierce

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