MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 587

• Manufacturer Part Number: MMC2114
• Description: M CORE Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

22.14.3.5 CPU Address, Attributes (ADDR, ATTR)
22.14.3.6 CPU Status (PSTAT)
22.14.3.7 OnCE Debug Output (DEBUG)
22.14.4 OnCE Controller Registers
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
MOTOROLA
The CPU address and attribute information may be used in the memory
breakpoint logic to qualify memory breakpoints with access address and
cycle type information.
The trace logic uses the PSTAT signals to qualify trace count
decrements with specific CPU activity.
The DEBUG signal is used to indicate to on-chip resources that a debug
session is in progress. Peripherals and other units may use this signal to
modify normal operation for the duration of a debug session. This may
involve the CPU executing a sequence of instructions solely for the
purpose of visibility/system control. These instructions are not part of the
normal instruction stream that the CPU would have executed had it not
been placed in debug mode.
This signal is asserted the first time the CPU enters the debug state and
remains asserted until the CPU is released by a write to the OnCE
Command Register with the GO and EX bits set, and a register specified
as either no register selected or the CPUSCR. This signal remains
asserted even though the CPU may enter and exit the debug state for
each instruction executed under control of the OnCE controller.
This section describes the OnCE controller registers:
All OnCE registers are addressed by means of the RS field in the OCMR,
as shown in
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Freescale Semiconductor, Inc.
For More Information On This Product,
OnCE Command Register (OCMR)
OnCE Control Register (OCR)
OnCE Status Register (OSR)
JTAG Test Access Port and OnCE
Go to: www.freescale.com
Table
22-4.
JTAG Test Access Port and OnCE
Functional Description
Advance Information
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