Atmel Evaluation Kit AT91SAM9X25-EK AT91SAM9X25-EK Data Sheet
Product codes
AT91SAM9X25-EK
22
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
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.
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.
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.
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 standard ARM instruction set, as the Load/Store
instruction have an indexing mode of ±4 Kbytes.
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 Kbytes.
shows the System Controller block diagram.
shows the mapping of the User Interface of the System Controller peripherals.