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MAC7200 データシート(PDF) 97 Page - Freescale Semiconductor, Inc |
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MAC7200 データシート(HTML) 97 Page - Freescale Semiconductor, Inc |
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97 / 976 page  MCU Mode Selection MAC7200 Microcontroller Family Reference Manual, Rev. 2 Freescale Semiconductor 19 • No FlexBus • Boot from Flash main array at $0000 0000 — Shadow Block available at $00f0 0000 • JTAG Lockout Recovery is available 2.4.3 Normal Primary Bootloader Mode In Normal PBL Mode, the memory map of the system is modified to move the location of the Shadow Block from its default Reset location to starting at location $0000 0000. This remapping enables the device to boot from the Shadow Block. • Same as Single Chip mode, except boot from the Shadow Block • EICE/Nexus/JTAG active — Enable TCK, TDI, TDO and DBGEN • No FlexBus • Relocate Shadow Block to $0000 0000 • Relocate Flash main array to $2000 0000 — Shadow Block available at $20f0 0000 • JTAG Lockout Recovery is available 2.4.4 Secured Primary Bootloader Mode In Secured PBL Mode, the memory map of the system is modified to move the location of the Shadow Block from its default Reset location to starting at location $0000 0000. This remapping enables the device to boot from the Shadow Block. • Same as Single Chip mode, except boot from the Shadow Block • No EICE/Nexus/JTAG — Disable DBGEN and Nexus clock(s) • No FlexBus • Relocate Shadow Block to $0000 0000 • Relocate Flash main array to $2000 0000 — Shadow Block available at $20f0 0000 • JTAG Lockout Recovery is available 2.4.5 Normal Expanded Mode In Normal Expanded Mode, the MCU boots from an external source by accessing external memory and hardware across the external Address and Data bus. In this mode the Flash main array and Shadow Block are accessable. • EICE/Nexus/JTAG active — Enable TCK, TDI, TDO and DBGEN |
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