DSP56857 datasheet(95/662 Pages) FREESCALE

95 / 662 page

Memory Maps

Overview, Rev. 4

Freescale Semiconductor

3-7

Figure 3-2. 56854 Memory Map

Figure 3-3. 56855 Memory Map

Program Space

$000000

Prog RAM1

$1FFFFF

Prog ROM

$1F0400

$1F0000

External

Memory2

Data Space

$000000

Data RAM1

$1FFC00

On-Chip

External

Memory3

$1FFFFF

Peripherals4

$FFFFFF

External

Memory

$FFFF00

EOnCE

$004000

1. Can be disabled resulting in this space being external memory.

2. In operating mode 2, chip select 0 is initially set to $040000 - $07FFFF.

3. In operating mode 0, chip select 0 is initially set to $040000 - $07FFFF.

4. The range of short I/O space is: $1FFFC0 - $1FFFFF.

Reserved

Program Space

$000000

Prog RAM1

1. Can be disabled, in which case this space is external memory.

$1FFFFF

Prog ROM

$1F0400

$1F0000

External

Memory2

2. In operating mode 2, chip select 0 is initially set to $040000 - $07FFFF.

Data Space

$000000

$006000

Data RAM1

$1FFC00

On-Chip

External

Memory3

3. In operating mode 0, chip select 0 is initially set to $040000 - $07FFFF.

$1FFFFF

Peripherals4

4. The range of short I/O space is: $1FFFC0 - $1FFFFF.

$FFFFFF

External

Memory

$FFFF00

EOnCE

$006000

Reserved

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