MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 719

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC555CME

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC555
• Data Bus Width: 32 bit
• Interface Type: RS-232
• For Use With/related Products: MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

MPC555
USER’S MANUAL
DSCK
The development port provides a full duplex serial interface for communications be-
tween the internal development support logic of the CPU and an external development
tool. The development port can operate in two working modes: the trap enable mode
and the debug mode.
The trap enable mode is used in order to shift into the CPU internal development sup-
port logic the following control signals:
Figure 21-5 Functional Diagram of MPC555 / MPC556 Debug Mode Support
DSDI
1. Instruction trap enable bits, used for on the fly programming of the instruction
2. Load/store trap enable bits, used for on the fly programming of the load/store
3. Non-maskable breakpoint, used to assert the non-maskable external break-
4. Maskable breakpoint, used to assert the maskable external breakpoint
5. VSYNC, used to assert and negate VSYNC
/
MPC556
breakpoint
breakpoint
point
BKPT, TE,
VSYNC
CPU Core
ECR
DER
9
DEVELOPMENT SUPPORT
Rev. 15 October 2000
TECR
Development Port
Development Port
Control Logic
Shift Register
32
35
DPDR
DPIR
32
Internal
Bus
Development
Port
SIU/
EBI
Logic
Support
MOTOROLA
EXT
BUS
VFLS,
DSDO
FRZ
21-23