Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD 데이터 시트

32072H–AVR32–10/2012

The following device specific registers can be selected as JTAG scan chain depending on the
instruction loaded in the JTAG Instruction Register. Additional registers exist, but are implicitly
described in the functional description of the relevant instructions.

The Device Identification Register contains a unique identifier for each product. The register is
selected by the IDCODE instruction, which is the default instruction after a JTAG reset.

The different device configurations have different JTAG ID codes, as shown in 

.

Note that if the flash controller is statically reset, the ID code will be undefined

.

MSB

LSB

Bit

31

28

27

12

11

1

0

Device ID

4 bits

16 bits

11 bits

1 bit

Table 35-27. Device and JTAG ID