PXD20 datasheet(23/130 Pages) FREESCALE

23 / 130 page

Overview

PXD20 Microcontroller Data Sheet, Rev. 2

Preliminary—Subject to Change Without Notice

Freescale Semiconductor

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Data Trace via Data Write Messaging (DWM) and Data Read Messaging (DRM). This provides the capability for the

development tool to trace reads and/or writes to selected internal memory resources.

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Ownership Trace via Ownership Trace Messaging (OTM). OTM facilitates ownership trace by providing visibility of

which process ID or operating system task is activated. An Ownership Trace Message is transmitted when a new

process/task is activated, allowing the development tool to trace ownership flow.

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Run-time access to embedded processor memory map via the JTAG port. This allows for enhanced download/upload

capabilities.

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Watchpoint Messaging via the auxiliary pins

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Watchpoint Trigger enable of Program and/or Data Trace Messaging

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Data Acquisition Messaging (DQM) allows code to be instrumented to export customized information to the Nexus

Auxiliary Output Port.

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Address Translation Messaging via program correlation messages displays updates to the TLB for use by the debugger

in correlating virtual and physical address information

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Auxiliary interface for higher data input/output

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Registers for Program Trace, Data Trace, Ownership Trace and Watchpoint Trigger.

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All features controllable and configurable via the JTAG port

PXD20 데이터시트(PDF) 23 Page - Freescale Semiconductor, Inc