at91sam9x25-cu ATMEL Corporation, at91sam9x25-cu Datasheet - Page 29

• Manufacturer Part Number: at91sam9x25-cu
• Description: At91sam Arm-based Embedded Mpu
• Manufacturer: ATMEL Corporation

8. System Controller
11054AS–ATARM–29-Jul-11
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.
The System Controller’s peripherals are all mapped within the highest 16 KBytes of address
space, between addresses 0xFFFF C000 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 have an indexing mode of ±4 KBytes.
Figure 8-1 on page 30
Figure 7-1 on page 26
peripherals.
shows the System Controller block diagram.
shows the mapping of the User Interface of the System Controller
SAM9X25
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