Stereo System User Manual

A-4 DSP56012 User’s Manual MOTOROLA
Bootstrap ROM Contents
A.3 BOOTSTRAP PROGRAM LISTING
; BOOTSTRAP CODE FOR DSP56012—(C) Copyright 1997 Motorola Inc.
; Revised August 28, 1997.
;
; bootstrap through HOST, SHI-SPI and SHI-I2C,according to op-modes MC:MB:MA.
comment !
_________
/ RESET \ Wake up on bootstrap mode
\_________/ with OnCE port enabled
|
/ \
/ \ 0
( MA? )--------------------------+
\ / |
\ / |
| 1 |
/ \ |
/ \ 0 |
( MC? )--------------+ |
\ / | |
\ / | |
| 1 | |
/ \ | |
0 / \ | |
+--------------( MB? ) | |
| \ / | |
| \ / 1 | |
______|______ ______|______ ______|______ |
| Download | | Download | | Download | |
| SHI/SPI | | SHI/I2C | | HOST | |
|___________| |___________| |___________| |
| | | |
+-----------------+-----------------+ |
_______|________ _______|________
| Switch to | | Switch to |
| Normal mode | | Normal mode, |
| & Goto P:$0 | | Goto P:$0A00 |
| _______| | _______|
|______/ |______/
!
Note: The internal Program ROM is factory-programmed. Refer to the DSP56012
Technical Data
sheet for available Program ROM packages.