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Of special note is the connection between the EMIF and the external device's address bus. The EMIF address pins EM_A[20:0] always provide the least significant bits of a double-word (32-bit) address. The EM_BA[1:0] pins provide word (16-bit) and byte selection functionality according to the data bus width configured in the Asynchronous CSn Configuration Register 1 (ACSnCR1).
