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Initializing-and-saving-peripheral-device-configuration-states-of-a-microcontroller-using-a-utility-program

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Initializing and saving peripheral device configuration states of a microcontroller using a utility program

Details

Inventors: Mergard, Jim;
Assignee: Advanced Micro Devices Inc. (Sunnyvale, CA)
Primary Examiner: Decady; Albert
Assistant Examiner: Lamarre; Guy
Attorney, Agent or Firm: Akin Gump Strauss Hauer & Feld LLP

A microcontroller has many internal peripheral devices. The peripheral devices have many registers that can be used to configure the peripheral devices for a particular application. The configuration registers are coupled to a scan path where configuration scan data can be inputted or outputted from an external memory. A utility program is used to precalculate and display appropriate configuration scan data. The utility program can also create an output. The output can be loaded into the external memory or can be a data file. Further, the utility program can extract configuration scan data from the external memory, for debug and test.

DETAILED DESCRIPTION According to the present invention, a utility program can configure a memory with configuration states of peripheral devices of a microcontroller.
The memory can be a programmable read only memory (PROM), such as a flash memory.
The utility program can create an output.
The output can be loaded into the memory or can be an output file.
The configuration states can be loaded with scan hardware into configuration registers of various embedded peripheral devices of the microcontroller.
Furthermore, according to the present invention, the utility program can be used to examine the contents of configuration registers of embedded peripheral devices of the microcontroller.
Configuration states are scanned out into the memory with scan hardware.
The utility program can display the contents of the configuration registers on a screen for test and debug.

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