Datasheet

958
32072H–AVR32–10/2012
AT32UC3A3
35.5.4 JTAG Data Registers
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.
35.5.4.1 Device Identification Register
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.
•Device specific ID codes
The different device configurations have different JTAG ID codes, as shown in Table 35-27.
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
Revision Part Number Manufacturer ID 1
4 bits 16 bits 11 bits 1 bit
Revision
This is a 4 bit number identifying the revision of the component.
Rev A = 0x0, B = 0x1, etc.
Part Number
The part number is a 16 bit code identifying the component.
Manufacturer ID
The Manufacturer ID is a 11 bit code identifying the manufacturer.
The JTAG manufacturer ID for ATMEL is 0x01F.
Table 35-27. Device and JTAG ID
Device name JTAG ID code (r is the revision number)
AT32UC3A3256S 0xr202003F
AT32UC3A3128S 0xr202103F
AT32UC3A364S 0xr202203F
AT32UC3A3256 0xr202603F
AT32UC3A3128 0xr202703F
AT32UC3A364 0xr202803F
AT32UC3A4256S 0xr202903F
AT32UC3A4128S 0xr202a03F
AT32UC3A464S 0xr202b03F
AT32UC3A4256 0xr202c03F
AT32UC3A128 0xr202d03F
AT32UC3A64 0xr202e03F