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AT91SAM9260 Datasheet(PDF) 21 Page - ATMEL Corporation |
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AT91SAM9260 Datasheet(HTML) 21 Page - ATMEL Corporation |
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21 / 798 page  21 6221I–ATARM–17-Jul-09 AT91SAM9260 8. System Controller The System Controller is a set of peripherals that allows handling of key elements of the system, such as power, resets, clocks, time, interrupts, watchdog, etc. The System Controller User Interface also embeds the registers that configure the Matrix and a set of registers for the chip configuration. The chip configuration registers configure EBI chip select assignment and voltage range for external memories The System Controller’s peripherals are all mapped within the highest 16 Kbytes of address space, between addresses 0xFFFF E800 and 0xFFFF FFFF. However, all the registers of System Controller are mapped on the top of the address space. All the registers of the System Controller can be addressed from a single pointer by using the stan- dard ARM instruction set, as the Load/Store instruction has an indexing mode of ±4 Kbytes. Figure 8-1 on page 22 shows the System Controller block diagram. Figure 7-1 on page 16 shows the mapping of the User Interfaces of the System Controller peripherals. |
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