AT32UC3A464 Atmel Corporation, AT32UC3A464 Datasheet - Page 125

• 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

9.4.6.6
9.5
9.5.1
9.5.1.1
32002F–03/2010
Program trace
Program trace overview
Watchpoint Trigger
Branch message summary
Table 9-30.
The AVR32 OCD system provides program trace support via the debug port. The program trace
feature implements a Program Flow Change Model in which the program trace is synchronized
at each program flow discontinuity. This occurs at taken indirect branches and exceptions. A
record of taken / not taken direct branches is included so that the complete program flow can be
decoded.
The development tool can then interpolate what transpires between each program trace mes-
sage by correlating information from branch target messaging and static source or object code
files. Self-modifying code cannot be traced with the Program Flow Change Model because the
source code is not static.
The TM[2] bit in the Development Control register must be set to enable program trace.
Five types of branch messages can be generated:
R/W
R/W
R/W
R/W
R/W
R
1. Program Trace, Indirect Branch is transmitted on most subroutine calls, returns, inter-
2. Program Trace Synchronization is transmitted to indicate the current PC after starting
rupts, exceptions, and any situation where the target address of a branch cannot be
determined from the source code. This message contains the instruction count to iden-
tify the branch and the target PC to identify the branch target.
trace or after trace synchronization is lost.
Bit Number
31:29
28:26
25:23
22:20
19:0
WT, Watchpoint Trigger Register
Field Name
PTS
PTE
DTS
DTE
Reserved
Init. Val.
000
000
000
000
-
Description
PTS - Program Trace Start
000 = Trigger disabled
001 = Program watchpoint 0b
010 = Program watchpoint 1a
011 = Program watchpoint 1b
100 = Program watchpoint 2a
101 = Program watchpoint 2b
110 = Data watchpoint 3a
111 = Data watchpoint 3b
PTE - Program Trace End
000 = Trigger disabled
001 <-> 111 Watchpoint selected as for PTS
DTS - Data Trace Start
000 = Trigger disabled
001 <-> 111 Watchpoint selected as for PTS
DTE - Data Trace End
000 = Trigger disabled
001 <-> 111 Watchpoint selected as for PTS
Reserved
AVR32
125