Mode 0: Expanded Mode - Motorola DSP56305 User Manual

Core Configuration
Bootstrap Program
In the proper bootstrap modes, the bootstrap program expects the following data
sequence when downloading the user program through an external port:
1. Three bytes defining the number of (24-bit) program words to be loaded
2. Three bytes defining the (24-bit) start address to which the user program loads in
the DSP56305 program memory
3. The user program (three bytes for each 24-bit program word)
The three bytes for each data sequence must be loaded with the least significant byte
first.
Once the bootstrap program completes loading the specified number of words, it jumps
to the specified starting address and executes the loaded program.
4.3.1

Mode 0: Expanded Mode

Mode MODD
0 0
The bootstrap ROM is bypassed and the DSP56305 starts fetching instructions beginning
at address $C00000. Memory accesses are performed using SRAM memory access type
with 31 wait states and no address attributes selected.
4-6
MODC MODB MODA
0 0
DSP56305 User's Manual
Reset
Vector
0 $C00000 Expanded mode
Description
MOTOROLA