READI Module
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
24-81
24.14.2.4 RCPU Development Access Flow Diagram
has flow diagram describing how the RCPU development access can be achieved via READI
signals.
Figure 24-83. RCPU Development Access Flow Diagram
Tool sends Download Request Message and configures
READI module (assign DPA, DME & DOR, etc.)
DSDI=1 (sync. self-clk mode)
Tool sends DSDI Message
Device sends DSDO Message
No
No
Yes
Yes (Debug out-of-reset)
(No Debug out-of-reset) No
Device sends Debug Mode Status
“BDM entry” (status bit = 1)
BD
M
C
O
N
F
IG
U
R
A
T
IO
N
O
U
T
-O
F
-R
ESET
G
EN
ER
IC
R
C
PU
D
EVEL
O
PMEN
T
PR
O
T
O
C
O
L
Tool Asserts
HRESET
Tools Negates
HRESET
16 clocks after receiving Device Ready
negation to enter debug mode
negation to NOT enter debug mode
DOR=1
?
Yes
Yes (Debug Mode enabled)
(Debug Mode not enabled) No
DME=1
?
(DPA, DME, DOR, etc. bits locked)
BDM
Entry?
Tool sends DSDI Message
Device sends DSDO Message
BDM
Exit?
DEBUG MODE NOT ENALBED
DEBUG MODE ENABLED
(DME=0)
(DME=1)
Tool Asserts and Negates
RSTI
Device sends DID message
(@ subsequent READI reset)
(@ subsequent RCPU reset)
*A*
*B*
*(exit loop via READI reset (*A*)
or system reset (*B*))
Device sends Debug Mode
“BDM exit” (status bit = 0)
*(exit loop via
READI reset
(*A*) or via
system reset
(*B*))
DSDI=1
(synch.self-clk mode)
DSDI=1 (sync. self-clk mode)
DSCK=1 until 16 clocks after
SRESET
DSCK=0 within 8 clocks of
SRESET
Message
Status Message
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...