AT32UC3C2512C Automotive Atmel Corporation, AT32UC3C2512C Automotive Datasheet - Page 1200
AT32UC3C2512C Automotive
Manufacturer Part Number
AT32UC3C2512C Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
2.AT32UC3C0512C_AUTOMOTIVE.pdf
(1312 pages)
3.AT32UC3C0512C_AUTOMOTIVE.pdf
(107 pages)
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39.3.7.1
39.3.7.2
39.3.8
9166C–AVR-08/11
AUX-based Debug Features
Cyclic Redundancy Check (CRC)
NanoTrace
The MSU can be used to automatically calculate the CRC of a block of data in memory. The
MSU will then read out each word in the specified memory block and report the CRC32-value in
an MSU register.
The MSU additionally supports NanoTrace. This is a 32-bit AVR-specific feature, in which trace
data is output to memory instead of the AUX port. This allows the trace data to be extracted by
the debugger through the SAB, enabling trace features for aWire- or JTAG-based debuggers.
The user must write MSU registers to configure the address and size of the memory block to be
used for NanoTrace. The NanoTrace buffer can be anywhere in the physical address range,
including internal and external RAM, through an EBI, if present. This area may not be used by
the application running on the CPU.
Utilizing the Auxiliary (AUX) port gives access to a wide range of advanced debug features. Of
prime importance are the trace features, which allow an external debugger to receive continuous
information on the program execution in the CPU. Additionally, Event In and Event Out pins
allow external events to be correlated with the program flow.
Debug tools utilizing the AUX port should connect to the device through a Nexus-compliant Mic-
tor-38 connector, as described in the AVR32UC Technical Reference manual. This connector
includes the JTAG signals and the RESET_N pin, giving full access to the programming and
debug features in the device.
AT32UC3C
1200
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