Reading from CP15 Register 2 returns the pointer to the currently active first-level translation table in bits [31:14] and an Unpredictable value in bits [13:0]. The CRm and opcode_2 fields Should Be Zero when reading CP15 Register 2.

Writing to CP15 Register 2 updates the pointer to the currently active first-level translation table from the value in bits [31:14] of the written value. Bits [13:0] Should Be Zero. The CRm and opcode_2 fields Should Be Zero when writing CP15 Register 2. Translation Table Base Register format is shown in Figure 3.6.