Flexible pin configuration for use in a data processing system d

Details Flexible pin configuration for use in a data processing system d Flexible pin configuration for use in a data processing system d

1995-06-26

1997-07-29

Harvey, Jack B.

395828, 395830, 395834, G06F 1300

Patent

active

056528442

ABSTRACT:
When a data processing system (10) is reset, a configuration value is determined by either an external configuration value provided to a plurality of external integrated circuit pins or an internal value stored in an internal memory of the system (30, 60). If an external configuration value is not provided and if an internal value is not stored in the internal memory, the data processing system provides a default configuration value. The default configuration value is stored in a memory in a system integration unit (20). Configuration data may also be retrieved from the external integrated circuit pins in octal packets. A last bit of each octal packet determines whether a next eight bits of the configuration data is to be retrieved via the plurality of integrated circuit pins or to be retrieved from the default configuration value stored in the system integration unit of the data processing system.

REFERENCES:
patent: 5428748 (1995-06-01), Davidson et al.
patent: 5450353 (1995-09-01), Koike
patent: 5495196 (1996-02-01), Rothman
patent: 5511182 (1996-04-01), Le et al.
patent: 5544342 (1996-08-01), Dean

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