AT32UC3A464 Atmel Corporation, AT32UC3A464 Datasheet - Page 137

• Manufacturer Part Number: AT32UC3A464
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A464

• Flash (kbytes): 64 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• Hardware Qtouch Acquisition: No
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 2
• Uart: 4
• Ssc: 1
• Sd / Emmc: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 128
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0 to 3.6
• Operating Voltage (vcc): 3.0 to 3.6
• Fpu: No
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

9.7.2
9.7.2.1
9.7.3
9.7.3.1
32002F–03/2010
Messages
Registers
Ownership Trace (OT)
Ownership Trace Process ID (PID)
offers development tools a mechanism to decipher which set of symbolics and sources are
associated for lower levels of visibility and debugging.
Ownership trace information is transmitted out the AUX using an Ownership Trace Message.
OTM facilitates ownership trace by providing visibility of which process ID or operating system
task is activated. An Ownership Trace Message is transmitted to indicate when a new pro-
cess/task is activated, allowing development tools to trace ownership flow. Additionally, an
Ownership Trace Message is also transmitted periodically during runtime at a minimum fre-
quency of every 256 Program Trace or Data Trace Messages.
In the AVR32, this feature is supported through an Ownership Trace Register, which automati-
cally produces an Ownership Trace Message when written to. The RTOS scheduler routine
writes the new process ID to this register during process switching using the mtdr instruction.
The TM[0] bit in the Development Control register must be set to enable ownership trace.
If there is no room in the Transmit Queue for the message, and the CPU is not halted to prevent
overruns, an error message is produced.
Table 9-52.
The CPU should write the current Process ID value to this register, whenever the RTOS per-
forms a process switch. This will automatically create an Ownership Trace Message to be
transmitted to the tool. This register can be written from any privileged CPU mode.
Ownership Trace Message
Packet
Size
32
6
• The ownership trace message is sent:
• When the Ownership Trace Process ID (PID) register is written.
• When program trace with sync message is generated due to overflow in the periodic
• When a data trace with sync message is generated due to overflow in the periodic message
• After a Transmit Queue overrun if the CPU has written to PID when the queue was full.
message counter.
counter.
Packet
Name
PROCESS
TCODE
Ownership Trace Message
Packet
Type
Fixed
Fixed
Direction: From target
Description
Task / process ID.
Value = 2
AVR32
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