PXD10RM Datasheet, PDF (62/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

• Read and write attributes for all masters
• Execute and supervisor/user mode attributes for processor masters
1.5.29 Boot Assist Module (BAM)
The BAM is a block of read-only memory that is programmed once by Freescale. The BAM program is
executed every time the MCU is powered-on or reset in normal mode. The BAM supports different modes
of booting. They are:
• Booting from internal flash memory
• Serial boot loading (A program is downloaded into RAM via CAN or UART and then executed)
• Booting from external memory
Additionally, the BAM:
• Enables and manages the transition of the MCU from reset to user code execution
• Configures device for serial bootload
• Enables multiple bootcode starting locations out of reset through implementation of search for
valid Reset Configuration Halfword
• Enables or disables software watchdog timer out of reset through BAM read of the Reset
Configuration Halfword option bit
1.5.30 IEEE 1149.1 JTAG Controller (JTAGC)
JTAGC features the following:
• Backward compatible to standard JTAG IEEE 1149.1-2001 test access port (TAP) interface
• Support for boundary scan testing
1.5.31 Nexus Development Interface (NDI)
Nexus features the following:
• Per IEEE-ISTO 5001-2003
• Nexus 2 Plus features supported
— Static debug
— Watchpoint messaging
— Ownership trace messaging
— Program trace messaging
— Real time read/write of any internally memory mapped resources through JTAG pins
— Overrun control, which selects whether to stall before Nexus overruns or keep executing and
allow overwrite of information
— Watchpoint triggering, watchpoint triggers program tracing
• Configured via the IEEE 1149.1 (JTAG) port
• Nexus Auxiliary port supported on the 176 LQFP package FOR DEVELOPMENT ONLY
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PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor