MPU_RBAR

Bit Field

Read/Write

Field Name

Description

31:5

RW

BASE

Base address

4:3

RW

SH

Shareability

2:1

RW

AP

Access permissions

0

RW

XN

Execute never

Bit Field

Field Name

Value Symbol

Value Description

Hex Value

4:3

SH

NON_SHAREABLE

Non-shareable

0x0*

OUTER_SHAREABLE

Outer shareable

0x2

INNER_SHAREABLE

Inner Shareable

0x3

2:1

AP

RW_PRIVILEGED_CODE_ONLY

Read/write by privileged code only

0x0*

RW_PRIVILEGED_LEVEL

Read/write by any privilege level

0x1

R_PRIVILEGED_CODE_ONLY

Read-only by privileged code only

0x2

R_PRIVILEGED_LEVEL

Read-only by any privilege level

0x3

0

XN

EXEC_PERMITED

Execution only permitted if read permitted

0x0*

EXEC_NOT_PERMITTED

Execution not permitted

0x1