Motorola MPC533 Reference Manual page 1019

(@ subsequent READI reset)
*A*
(@ subsequent RCPU reset)
*B*
DSDI=1
(synch.self-clk mode)
Tool sends DSDI Message
Device sends DSDO Message
*(exit loop via READI reset (*A*)
or system reset (*B*))
DEBUG MODE NOT ENALBED
(DME=0)
Figure 22-82. RCPU Development Access Flow Diagram
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Tool Asserts and Negates RSTI
Device sends DID message
Tool sends Download Request Message and configures
READI module (assign DPA, DME & DOR, etc.)
Tools Negates HRESET 16 clocks after receiving Device Ready
(DPA, DME, DOR, etc. bits locked)
(Debug Mode not enabled) No
(No Debug out-of-reset) No
DSDI=1 (sync. self-clk mode)
DSCK=0 within 8 clocks of SRESET
negation to NOT enter debug mode
*(exit loop via
READI reset
(*A*) or via
system reset
(*B*))
DEBUG MODE ENABLED
Chapter 22. READI Module
RCPU Development Access
Tool Asserts HRESET
DME=1
?
Yes (Debug Mode enabled)
Yes (Debug out-of-reset)
DOR=1
?
DSDI=1 (sync. self-clk mode)
DSCK=1 until 16 clocks after SRESET
negation to enter debug mode
Yes
BDM
Entry?
No
Device sends Debug Mode Status
Message
"BDM entry" (status bit = 1)
Tool sends DSDI Message
Device sends DSDO Message
Yes
BDM
Exit?
No
Device sends Debug Mode
Status Message
"BDM exit" (status bit = 0)
(DME=1)
22-87