Outer; Inner - Realtek Ameba-D RTL872 D Series User Manual


Attributes: 8-bit payload.

3.3.1 Outer

When Outer == 0000:
Bit Name
7:4 Outer
3:2 Device
1:0 RSVD

3.3.2 Inner

When Outer != 0000:
Bit Name
7:4 Outer
3:0 Inner
User Manual
Access Description
R/W Outer attributes. Specifies the Outer memory attributes.
The possible values of this field are:

0000: Device memory.

00RW: Normal memory, Outer Write-Through transient (RW != 00).

0100: Normal memory, Outer Non-Cacheable.

01RW: Normal memory, Outer Write-Back Transient (RW != 00).

10RW: Normal memory, Outer Write-Through Non-transient.

11RW: Normal memory, Outer Write-Back Non-transient.
Note: R and W specify the outer read and write allocation policy.

0: Don't allocate

1: Allocate
R/W Device attributes. Specifies the memory attributes for device.

00: Device-nGnRnE

01: Device-nGnRE

10: Device-nGRE

11: Device-GRE
R/W Reserved
Access Description
R/W Outer attributes. Specifies the Outer memory attributes.
The possible values of this field are:

0000: Device memory.

00RW: Normal memory, Outer Write-Through transient (RW != 00).

0100: Normal memory, Outer Non-Cacheable.

01RW: Normal memory, Outer Write-Back Transient (RW != 00).

10RW: Normal memory, Outer Write-Through Non-transient.

11RW: Normal memory, Outer Write-Back Non-transient.
Note: R and W specify the outer read and write allocation policy.

0: Don't allocate

1: Allocate
R/W Inner attributes. Specifies the Inner memory attributes.

0000: Unpredictable.

00RW: Normal memory, Inner Write-Through Transient (RW != 00).

0100: Normal memory, Inner Non-Cacheable.

01RW: Normal memory, Inner Write-Back Transient (RW != 00).

10RW: Normal memory, Inner Write-Through Non-transient.

11RW: Normal memory, Inner Write-Back Non-transient.
Note: R and W specify the outer read and write allocation policy.

0: Don't allocate

1: Allocate
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35
Memory Protection Unit (MPU)
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