Apparatus and method to set signal compensation settings for a data storage device

• US 8,341,373 B2
• Filed: 08/21/2008
• Issued: 12/25/2012
• Est. Priority Date: 06/03/2005
• Status: Active Grant

• Current Assignee: Rakuten Group, Inc.
• Original Assignee: International Business Machines Corporation
• Inventors: Cagno, Brian J., Kubo, Robert A., Lucas, Gregg S.
• Primary Examiner(s): Thai, Tuan V.
• Application Number:
  US12/196,169
• Publication Number:
  US 20080307185A1
• Time in Patent Office: 1,587 Days
• Field of Search: 711/100, 711/111, 711/112, 711/113, 711/114, 711/154, 711/167, 710/33, 375/232
• US Class Current: 711/167
• CPC Class Codes: H04L 25/03878 Line equalisers; line build-out devices

Abstract

A method is disclosed to set signal compensation settings for a data storage device comprising a first port and a second port, where that first port is interconnected to a first switch via a first communication pathway having a predetermined first length. The method determines first signal compensation settings based upon the first length.

Claims

1. An article of manufacture comprising a table comprising said default signal compensation settings and a computer readable medium having computer readable program code disposed therein to set signal compensation settings for a data storage device comprising a first port, wherein said first port is interconnected to a first switch via a first communication pathway having a predetermined first length, the computer readable program code comprising a series of computer readable program steps to effect:

determining first signal compensation settings upon said first length;

retrieving pre-determined default signal compensation settings, wherein said computer readable program code to determine first signal compensation settings comprises computer readable program code comprising a series of computer readable program steps to effect adjusting said default signal compensation settings based upon said first length;

wherein said computer readable program code to adjust said default signal compensation settings further comprises computer readable program code comprising a series of computer readable program steps to effect retrieving said default signal compensation settings from said table.

2. The article of manufacture of claim 1, wherein said computer readable program code to adjust said default signal compensation settings further comprises computer readable program code comprising a series of computer readable program steps to effect:

setting one or more input signal compensation settings; and

setting one or more output signal compensation settings.

3. A computer program product embodied in a computer readable medium and usable with a programmable computer switch domain processor to set signal compensation settings for a data storage device comprising a first port, wherein said first port is interconnected to a first switch via a first communication pathway having a predetermined first length, comprising:

computer readable program code which causes said programmable computer processor to determine first signal compensation settings based upon said first length;

computer readable program code which causes said programmable computer processor to retrieve pre-determined default signal compensation settings;

wherein said computer readable program code to determine first signal compensation settings comprises computer readable program code which causes said programmable computer processor to adjust said default signal compensation settings based upon said first length;

wherein said default signal compensation settings are encoded in a table disposed in a processor capable of communicating with said data storage device, wherein said computer readable program code to adjust said default signal compensation settings further comprises computer readable program code which causes said programmable computer processor to retrieve said default signal compensation settings from said table.

4. The computer program product of claim 3, wherein said computer readable program code to adjust said default signal compensation settings further comprises:

computer readable program code which causes said programmable computer processor to set one or more input signal compensation settings; and

computer readable program code which causes said programmable computer processor to set one or more output signal compensation settings.