11 reset controller status register (rcsr) – Intel PXA26X User Manual
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Intel® PXA26x Processor Family Developer’s Manual
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Clocks and Power Manager
3.5.11
Reset Controller Status Register (RCSR)
The CPU uses the RCSR, refer to
Table 3-19
, to determine what caused the last reset. The
processor can be reset in four ways:
•
GPIO reset
•
Sleep mode
•
Watchdog reset
•
Hardware reset
Refer to
Table 2-4, “Effect of Each Type of Reset on Internal Register State” on page 2-7
for details
of the behavior of different modules during each type of reset.
Each RCSR status bit is set by a different reset source and can be cleared by writing a 1 back to the
bit. The RCSR status bits for watchdog reset, sleep mode, and GPIO resets have a hardware reset
state of zero.
This is a read/write register. Ignore reads from reserved bits. Write zeros to reserved bits.