Patent
1997-04-11
1999-09-14
Teska, Kevin J.
G06F 1500
Patent
active
059535156
ABSTRACT:
A vital product data (VPD) detection circuit mountable on a substrate of a pluggable component. The circuit comprises a "parallel read" circuit for generating vital product data associated with the pluggable component, a "serial read" circuit for storing and retrieving vital product data associated with the pluggable component, and means for interconnecting the parallel and serial read circuits. The parallel read circuit preferably comprises a parallel array of transistors surface-mounted on the substrate, and the serial read circuit preferably comprises a serial EEPROM having a clock input, a set of address inputs, and a bidirectional data pin. A VPD detection mechanism may disable the parallel VPD circuitry in favor of the serial VPD detection circuitry, or vice versa, or these circuits may be enabled but activated in a mutually exclusive manner.
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Coteus Paul William
Kellogg Mark William
Mirabella Robert Dominick
Tuten Wally
Emile Volel
International Business Machines - Corporation
Judson David H.
Mohamed Ayni
Teska Kevin J.
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