Techniques for actively configuring programmable circuits...

Details Techniques for actively configuring programmable circuits... Techniques for actively configuring programmable circuits...

2006-05-09

2006-05-09

Butler, Dennis M. (Department: 2115)

Electrical computers and digital processing systems: support

Digital data processing system initialization or configuration

C713S100000

Reexamination Certificate

active

07043630

ABSTRACT:
Techniques for actively configuring a programmable circuit using configuration data stored in an external memory are provided. The programmable circuit attempts to read a device identification code from an external memory device using a read instruction. The programmable circuit then attempts to identify the external memory device by matching the identification code returned from the external memory with a code in a first predefined list. A match indicates that the programmable circuit has hardware that can generate instructions that the memory device can recognize. After the programmable circuit identifies the memory device, the programmable circuit sends instructions to the external memory device according to a predefined protocol understood by the memory device. The programmable circuit can also compare a device identification code for a particular memory device with a second list of identification codes to determine whether a user wants the programmable circuit to support that memory device.

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patent: 5748979 (1998-05-01), Trimberger
patent: 2002/0199110 (2002-12-01), Kean
patent: 2004/0128260 (2004-07-01), Amedure et al.

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