Core Configuration
Operating Mode Register (OMR)
MOTOROLA
DSP56367
6-3
6.2.3
ADDRESS TRACING ENABLE (ATE) - BIT 15
The Address Tracing Enable (ATE) bit is used to turn on Address Tracing (AT) Mode. When
the AT Mode is enabled, the DSP56300 Core reflects the addresses of internal fetches and
program space moves (MOVEM) to the Address Bus (A0-A17), if the Address Bus is not
needed by the DSP56300 Core for external accesses. The ATE bit is cleared on hardware
reset.
6.2.4
PATCH ENABLE (PEN) - BIT 23
The Patch Enable function is used for patching Program ROM locations. i.e. to replace during
program execution, the contents of the Program ROM. This is done by using the Instruction
Cache to supply the instruction word instead of the Program ROM.
The Patch Enable function is activated by setting bit 23 (PEN) in the OMR Register. The PEN
bit is cleared by hardware reset.
The Instruction Cache should be initialized with the new instructions according to the
following procedure:
These steps should be executed from external memory or by download via host interface:
1. Set Cache Enable = 1
2. Set Patch Enable = 1
3. initialize TAGs to different values by unlock eight different external sectors
4. lock the PATCH sector(s)
5. move new code to locked sector(s), to the addresses that should be replaced
6. start regular PROM program
;****************************************************************************
; PATCH initialization example
;****************************************************************************
page 132,55,0,0,0
nolist
INCLUDE "ioequ.asm"
INCLUDE "intequ.asm"
Summary of Contents for DSP56367
Page 16: ...xvi MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Page 22: ...xxii MOTOROLA List of Figures Figure Number Title Page Number ...
Page 26: ...xxvi MOTOROLA List of Tables Table Number Title Page Number ...
Page 148: ...4 6 DSP56367 MOTOROLA Design Considerations PLL Performance Issues ...
Page 248: ...9 30 DSP56367 MOTOROLA Serial Host Interface SHI Programming Considerations ...
Page 306: ...10 58 DSP56367 MOTOROLA Enhanced Serial Audio Interface ESAI ESAI Initialization Examples ...
Page 389: ...Bootstrap ROM Contents MOTOROLA DSP56367 A 15 end ...
Page 390: ...A 16 DSP56367 MOTOROLA Bootstrap ROM Contents ...
Page 432: ...C 8 DSP56367 MOTOROLA JTAG BSDL ...
Page 484: ...D 52 DSP56367 MOTOROLA Programmer s Reference ...
Page 490: ...E 6 DSP56367 MOTOROLA Power Consumption Benchmark ...
Page 516: ...F 26 DSP56367 MOTOROLA IBIS Model ...
Page 522: ...Index 6 MOTOROLA Index ...
Page 523: ......