Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet

32072H–AVR32–10/2012

The reset register is selected by the AVR_RESET instruction and contains one bit for each reset
domain in the device. Setting each bit to one will keep that domain reset until the bit is cleared.

Note: This register is primarily intended for compatibility with other 32-bit AVR devices. Certain
operations may not function correctly when parts of the system are reset. It is generally recom-
mended to only write 0x11111 or 0x00000 to these bits to ensure no unintended side effects
occur.

The Boundary-Scan Chain has the capability of driving and observing the logic levels on the dig-
ital I/O pins, as well as driving and observing the logic levels between the digital I/O pins and the
internal logic. Typically, output value, output enable, and input data are all available in the
boundary scan chain.

The boundary scan chain is described in the BDSL (Boundary Scan Description Language) file
available at the Atmel web site.

LSB

Bit

4

3

2

1

0

Device ID