1.3.4. CT-R4F configuration

The CT-R4F receives configuration signals from the 4-wire serial link controlled by the baseboard.

The CT-R4F configuration signals control:

ARM Cortex-R4F and test chip configuration signals

The ARM Cortex-R4F and test chip configuration signals are either controlled by the baseboard, or permanently set HIGH or LOW by links on the CT-R4F. In a production ASIC, all these configuration signals are permanently tied HIGH or LOW. However, to experiment with different configurations, you can change certain CT-R4F configuration register values via a 4-wire serial link. See Overview of Core Tile configuration for details.

Note

User control of the signals present in the serial interface is supported through the system control registers on the EB. In a custom baseboard design, provision must also be made to control these configuration signals. See Overview of Core Tile configuration for details of the control requirements.

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