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Method for pin reconfiguration based on strapping or configurability

IP.com Disclosure Number: IPCOM000077227D
Publication Date: 2005-Feb-25
Document File: 3 page(s) / 43K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for pin reconfiguration based on strapping or configurability. Benefits include improved functionality, and improved performance.

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Method for pin reconfiguration based on strapping or configurability

Disclosed is a method for pin reconfiguration based on strapping or configurability. Benefits include improved functionality, and improved performance.

Background

              In memory technologies where components are on the top and bottom of the board in a mirrored fashion, routing signal groups, such as the command group, is difficult. For example, address bits cannot be swapped like data bits. Any one address bit is routed to the left on the top and to the right on the bottom (see Figure 1).

              When one solder ball shares multiple functions and only one of those functions can be implemented, signal strapping of signals is implemented.

Description

              The disclosed method is pin reconfiguration based on strapping or configurability. The method provides the capability to change the signal to have the same name and characteristics on the top and bottom by routing one signal to both pins. For example, the command signals cannot be re-numbered like the data signal group. The disclosed method enables the command signal to change a signal’s name (see Figure 2).

Advantages

              The disclosed method provides advantages, including:
•             Improved functionality due to providing pin reconfiguration in mirrored topologies
•             Improved performance due to improved signal integrity because the signal routes are equal in length

•             Improved performance due to improved signa...