PBKEY

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Interpret as PBKEY

KEY=LOCKED

Global Port Key

KEY

Port Bank Key.

0 (LOCKED): Port Bank registers are locked and no valid values have been written to PBKEY.

1 (INTERMEDIATE): Port Bank registers are locked and the first valid value (0xA5) has been written to PBKEY.

2 (UNLOCKED): Port Bank registers are unlocked. Any subsequent writes to the Port Bank registers or PBKEY will lock the interface.

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