4.2.2. Region size

The region size is specified as a five-bit value, encoding a range of values from 4KB to 4GB. The encoding is shown in Table 4.2.

Table 4.2. Region size encoding  

Bit encoding

Area size

00000 to 01010

Reserved

01011

4KB

01100

8KB

01101

16KB

01110

32KB

01111

64KB

10000

128KB

10001

256KB

10010

512KB

10011

1MB

10100

2MB

10101

4MB

10110

8MB

10111

16MB

11000

32MB

11001

64MB

11010

128MB

11011

256MB

11100

512MB

11101

1GB

11110

2GB

11111

4GB

Note

Any value less than b01011 programmed in CP15 register 6 bits[5:1] results in unpredictable behavior.

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