Atmel Evaluation Kit AT91SAM9M10-G45-EK AT91SAM9M10-G45-EK Data Sheet

Product codes

AT91SAM9M10-G45-EK

SAM9M10 [DATASHEET]

6355F–ATARM–12-Mar-13

The Debug Unit also manages the interrupt handling of the COMMTX and COMMRX signals that come from the
ICE and that trace the activity of the Debug Communication Channel.The Debug Unit allows blockage of access to
the system through the ICE interface.

A specific register, the Debug Unit Chip ID Register, gives information about the product version and its internal
configuration.

The SAM9M10 Debug Unit Chip ID value is 0x819B 05A2

and the extended ID is 0x00000002 on 32-bit width.

For further details on the Debug Unit, see the Debug Unit section.

10.6.5

IEEE 1149.1 JTAG Boundary Scan

IEEE 1149.1 JTAG Boundary Scan allows pin-level access independent of the device packaging technology.

IEEE 1149.1 JTAG Boundary Scan is enabled when JTAGSEL is high. The SAMPLE, EXTEST and BYPASS func-
tions are implemented. In ICE debug mode, the ARM processor responds with a non-JTAG chip ID that identifies
the processor to the ICE system. This is not IEEE 1149.1 JTAG-compliant.

It is not possible to switch directly between JTAG and ICE operations. A chip reset must be performed after JTAG-
SEL is changed.

A Boundary-scan Descriptor Language (BSDL) file is provided to set up test.

10.6.6

JID Code Register

Access: Read-only

• VERSION[31:28]: Product Version Number

Set to 0x0.

• PART NUMBER[27:12]: Product Part Number

Product part Number is 5B27

• MANUFACTURER IDENTITY[11:1]

Set to 0x01F.

Bit[0] required by IEEE Std. 1149.1.

Set to 0x1.

JTAG ID Code value is 05B2_703F.

VERSION

PART NUMBER

MANUFACTURER IDENTITY