MPC8544COMEDEV Freescale Semiconductor, MPC8544COMEDEV Datasheet - Page 1235

• Manufacturer Part Number: MPC8544COMEDEV
• Description: KIT DEV EXPRESS MPC8544COM
• Manufacturer: Freescale Semiconductor
• Type: MPUr

Specifications of MPC8544COMEDEV

• Contents: Board
• For Use With/related Products: MPC8544
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

21.2
This section provides information about all the external signals associated with the various MPC8544E
debug functions.
As shown in
configuration of the phase-locked loop clock mode and the ROM, flash, and dynamic memory. See
Chapter 4, “Reset, Clocking, and Initialization.”
To facilitate system testing, the MPC8544E provides a JTAG test access port (TAP) that complies with the
IEEE 1149.1 boundary-scan specification. This section also describes JTAG TAP signals.
21.2.1
All the signals associated with device debug features are summarized in
to the page number of the section with more information. The detailed descriptions are contained in
Table
described here also for completeness, with emphasis on their debugging utility.
Freescale Semiconductor
MSRCID[0:1]
MSRCID[2:4]
TRIG_OUT
MECC[0:7]
TRIG_IN
•
•
•
MDVAL
Name
TCK
21-2. Some signals (the MECC bus for example) are additionally described in other chapters, but are
Specific event selection—The trace buffer can be programmed to trace on the occurrence of one or
several concurrent events.
Specific trace selection—To facilitate trace data filtering, the trace buffer can be configured to
capture data under the following conditions:
— On every cycle in which a valid transaction is present on the selected interface
— Only when the programmed trace event is detected
Programmable trace stop—The trace buffer may be programmed to stop tracing when a
programmed stop-tracing event occurs or when the 256-entry buffer is full.
External Signal Description
Overview
Table
MPC8544E PowerQUICC III Integrated Host Processor Family Reference Manual, Rev. 1
Description
Trigger out
DDR error
correcting
data-valid
Test clock
source ID
Trigger in
Memory
Memory
code
21-1, the MPC8544E has several signals that are sampled during POR to determine the
Table 21-2. Debug, Watchpoint and Test Signal Summary
Functional
SDRAM
Debug
Debug
Debug
Debug
Debug
Block
DDR
Selectable data-valid signal from either DDR SDRAM
controller or LBC.
In debug mode, the high-order six bits carry debug
information (transaction source ID and data-valid
indication).
Selectable transaction source ID from either DDR SDRAM
controller or local bus controller.
Trigger for various function in the watchpoint monitor and
trace buffer.
Can be used externally for triggering a logic analyzer.
Additionally, it can be used for observing system ready
indication. Functions are multiplexed onto this signal
depending on TOSR[SEL] (see
Clock for JTAG testing. Internally pulled up.
Function
Table
21-25).
Table
Debug Features and Watchpoint Facility
21-2, listed with a reference
Reset_cfg O
Reset
Value
0x08
111
1
1
1
1
I/O Page #
O
O
O
O
I
I
1
21-7
21-7
21-7
21-7
21-8
21-8
21-8
21-5