Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Data Sheet
Product codes
AT91SAM9G25-EK
51
SAM9G25 [DATASHEET]
11032C–ATARM–25-Jan-13
10.
Debug and Test
10.1
Description
The SAM9G25 features a number of complementary debug and test capabilities. A common JTAG/ICE (In-Circuit
Emulator) port is used for standard debugging functions, such as downloading code and single-stepping through
programs. The Debug Unit provides a two-pin UART that can be used to upload an application into internal SRAM. It
manages the interrupt handling of the internal COMMTX and COMMRX signals that trace the activity of the Debug
Communication Channel.
Emulator) port is used for standard debugging functions, such as downloading code and single-stepping through
programs. The Debug Unit provides a two-pin UART that can be used to upload an application into internal SRAM. It
manages the interrupt handling of the internal COMMTX and COMMRX signals that trace the activity of the Debug
Communication Channel.
A set of dedicated debug and test input/output pins gives direct access to these capabilities from a PC-based test
environment.
environment.
10.2
Embedded Characteristics
z
ARM926 Real-time In-circuit Emulator
z
Two real-time Watchpoint Units
z
Two Independent Registers: Debug Control Register and Debug Status Register
z
Test Access Port Accessible through JTAG Protocol
z
Debug Communications Channel
z
Debug Unit
z
Two-pin UART
z
Debug Communication Channel Interrupt Handling
z
Chip ID Register
z
IEEE1149.1 JTAG Boundary-scan on All Digital Pins.