7 memory maps, Memory maps -7, Default settings (0, 0, 0) -7 – Motorola DSP56301 User Manual
Page 67: Section 3.7, Default
Memory Maps
Memory Configuration
3
-7
3.7
Memory Maps
The figures in this section show the memory space and RAM configurations defined by the
settings of the SR[CE], SR[SC], and OMR[MS] bits. The figures show the configuration, and
the accompanying tables describe the bit settings, memory sizes, and memory locations. Note
that when the Sixteen-Bit Compatibility mode bit SR[SC] is set, the DSP56301 memory map
is changed to enable 16-bit wide address access to the memory mapped X-I/O.
Figure 3-1. Default Settings (0, 0, 0)
Program
$FFFFFF
$000000
Internal
External
X Data
$FFFFFF
$000000
$000800
External
Internal X Data
RAM (2K)
Internal I/O
Y Data
$FF0000
$001000
$FFFF80
Bootstrap ROM
1
Internal—
Reserved
$FF00C0
External
Internal—
Reserved
$FFF000
$FF0000
$FFFFFF
$000000
External
Internal Y Data
RAM (2K)
External I/O
$FFFF80
External
Internal—
Reserved
$FFF000
$FF0000
(128 words)
(128 words)
Default
Bit Settings
Memory Configuration
CE
MS
SC
Program
RAM
X Data RAM
Y Data RAM
Cache
Addressable
Memory Size
0
0
0
4K
$000–$FFF
2K
$000–$7FF
2K
$000–$7FF
None
16 M
Note:
1.
Address range is for 3 K bootstrap space.
Program RAM
(4K)
$000800