Motorola DSP96002 - Manual (Page 186)

10 - 20 DSP96002 USER’S MANUAL MOTOROLA
4. ACK
5. Send command READ GDB REGISTER
(ODEC selects GDB as source for serial data and an acknowledge is issued to the command
controller.
6. ACK
7. CLK
(The command controller generates 32 clocks that shift out the contents of the GDB register.
The value of R0 is thus saved and will be restored before exiting the Debug Mode.)
8. Send command WRITE PDB REGISTER (no GO, no EX).
(ODEC selects PDB as destination for serial data.)
9. ACK
10. Send the 32-bit opcode: "MOVE #$xxxx,R0"
(After 32 bits have been received, the PDB register drives the PDB. ODEC causes the core to
load the opcode. An acknowledge is issued to the command controller.)
11. ACK
12. Send command WRITE PDB REGISTER and GO (no EX).
(ODEC selects PDB as destination for serial data.)
13. ACK
14. Send the 32-bit 2nd word of: "MOVE #$xxxx,R0" (the xxxx field).
(After 32 bits have been received, the PDB register drives the PDB. ODEC releases the chip
from the "halt" state and the instruction starts execution. The signal that marks the end of the
instruction returns the chip to the "halt" state and an acknowledge is issued to the command
controller.)
15. ACK
16. Send command WRITE PDB REGISTER and GO (no EX).
(ODEC selects PDB as destination for serial data.)
17. ACK
18. Send the 32-bit opcode: "MOVE X:(R0)+,x:OGDB"
(After 32 bits have been received, the PDB register drives the PDB. ODEC releases the chip
from the "halt" state and the contents of X:(R0) are loaded in the GDB REGISTER. The signal
that marks the end of the instruction returns the chip to the "halt" state and an acknowledge
is issued to the command controller.)
19. ACK
20. Send command READ GDB REGISTER
(ODEC selects GDB as source for serial data and an acknowledge is issued to the command
controller.)
21. ACK
22. CLK
23. Send command NO SELECTION and GO (no EX).