AT91SAM9G45-CU 데이터 시트보기 (PDF) - Atmel Corporation

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AT91SAM9G45-CU

AT91SAM ARM-based Embedded MPU

Atmel Corporation 

7. 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 the EBI chip select assignment and voltage range

for external memories.

7.1 System Controller Mapping

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 the 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 standard ARM instruction set, as the

Load/Store instruction have an indexing mode of ±4 Kbyte.

Figure 7-1 on page 21 shows the System Controller block diagram.

Figure 6-1 on page 15 shows the mapping of the User Interfaces of the System Controller peripherals.

SAM9G45 [DATASHEET] 20

6438K–ATARM–12-Feb-13

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