20.2.1 ETAP Address (ETAP_ADDRESS) Command

ETAP_ADDRESS selects the Address register. The read-only Address register provides the address for a processor access. The value read in the register is valid if a processor access is pending, otherwise the value is undefined.

The two or three LSBs of the register are used with the Psz field from the EJTAG Control register to indicate the size and data position of the pending processor access transfer. These bits are not taken directly from the address referenced by the load/store.