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                            QUAlity Issue Log (QUAIL)
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QUAIL ID#        2
ISSUE TITLE:     Correct usage of Open-sink
REQUESTER:       Eckhard Lenski, Nokia Siemens Networks
                 Mike LaBonte, Cisco Systems
DATE SUBMITTED:  July 26, 2011
DATE REVISED:    
DATE ACCEPTED:   PENDING

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STATEMENT OF THE ISSUE:
In 5.6.2 "Open-sink" is incorrectly made equivalent to Open-source.

REASON:

The IQ specification 2.0 has "For Open-source and Open-sink models Vref must be
below Vmeas ..." in section 5.6.2. The phrase "and Open-sink" should be in the
previous sentence, associated with Open-drain not Open-source.

STATEMENT OF THE RESOLVED SPECIFICATIONS:

Replace the original text:

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5.6.2. {LEVEL 3} Vref consistent for Open-drain, Open-source, and ECL Model_types

For Open-drain models [Model] or [Model Spec] Vref must be above Vmeas, and it is usually set
to the [Pullup Reference] voltage. For Open-source and Open-sink models Vref must be below
Vmeas, and it is usually set to the [Pulldown Reference] voltage, typically zero. For ECL models
Vref must be below Vmeas, and is usually 2 V below [Pullup Reference].
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with new text: (Changed lines are indicated with *)

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5.6.2. {LEVEL 3} Vref consistent for Open-drain, Open-source, and ECL Model_types

*For Open-drain and Open-sink models [Model] or [Model Spec] Vref must be above Vmeas, and it is usually set
*to the [Pullup Reference] voltage. For Open-source models Vref must be below
Vmeas, and it is usually set to the [Pulldown Reference] voltage, typically zero. For ECL models
Vref must be below Vmeas, and is usually 2 V below [Pullup Reference].
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ANALYSIS PATH/DATA THAT LED TO SPECIFICATION:

This error was detected by Eckhard Lenski by visual examination of the
specification.

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ANY OTHER BACKGROUND INFORMATION:


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