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MAC7200 Datasheet(PDF) 202 Page - Freescale Semiconductor, Inc

Part # MAC7200
Description  MAC7200 Microcontroller Family Reference Manual
PDF  976 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MAC7200 Datasheet(HTML) 202 Page - Freescale Semiconductor, Inc

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System Boot Sequence
MAC7200 Microcontroller Family Reference Manual, Rev. 2
124
Freescale Semiconductor
Figure 9-4. Device Programming Sequence
9.18.2
“Normal” Boot with a Bootloader
Figure 9-5. Device “Normal” Boot Sequence
Reset/Power-On
•
Flash determines security state of the MAC72xx
•
Mode signals determine Chip Mode
Normal Expanded
•
Relocate Flash
•
Boot from
FlexBus
Secure Expanded
•
Disable Flash
•
Boot from
FlexBus
Normal Bootloader
•
Boot from
Shadow Block
Secure Bootloader
•
Disable EICE/
Nexus/JTAG
•
Boot from
Shadow Block
Application
•
Execute application code from
external memory/device
Primary Bootloader
•
Execute Primary Bootloader code from
Shadow Block at address $0000 0000
•
Primary Bootloader determines application
code (in Flash main array) is to be executed.
Core Reset
•
Instruction fetch from $0000 0000
Application
Execute application code at address $0000 0000
•
Relocate Flash main array to address $0000 0000 (So that
the exception table from the application code is used)
•
Jump to address $0000 0000
Core Reset
•
Instruction fetch from $0000 0000



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