4.3 System Control Coprocessor
Some configuration options, as defined by Config bits 31:6, are set by the hardware during reset and are included in the Config register as read-only status bits for the software to access. Other configuration options are read/write (as indicated by Config register bits 5:0) and controlled by software; on reset these fields are undefined.
Certain configurations have restrictions. The Config register should be initialized by software before caches are used. Caches should be written back to memory before line sizes are changed, and caches should be reinitialized after any change is made.
Figure 4-16 shows the format of the Config register; Table 4-12 describes the Config register fields.
Figure 4-16 Config Register Format
Table 4-12 Config Register Fields 
Table 4-12 (cont.) Config Register Fields 
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