DSP56302 and DSP56309 Functional Differences

5

6

Operating Modes

The operating modes of the DSP56302 are documented in the DSP56302 User’s Manual. Table 3.

documents the operating modes of the DSP56309. Modes that differ from those of the DSP56302 are

highlighted in the table.

Table 3. DSP56309 Operating Modes

Mode

MODD

MODC

MODB

MODA

Reset Vector

Description

0

0

0

0

0

$C00000

Expanded mode

1

0

0

0

1

$FF0000

Reserved

2

0

0

1

0

$FF0000

Reserved

3

0

0

1

1

$FF0000

Reserved

4

0

1

0

0

$FF0000

Reserved

5

0

1

0

1

$FF0000

Reserved

6

0

1

1

0

$FF0000

Reserved

7

0

1

1

1

$FF0000

Reserved

8

1

0

0

0

$008000

Expanded mode

9

1

0

0

1

$FF0000

Boot from byte-wide memory

A

1

0

1

0

$FF0000

Boot from SCI

B

1

0

1

1

$FF0000

Reserved

C

1

1

0

0

$FF0000

HI08 bootstrap in ISA mode

D

1

1

0

1

$FF0000

HI08 bootstrap in HC11

non-multiplexed mode

E

1

1

1

0

$FF0000

HI08 bootstrap in 8051 multiplexed

bus mode

F

1

1

1

1

$FF0000

HI08 bootstrap in MC68302 mode

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