Rainbow Electronics AT91CAP9S250A - Manual (Page 67)

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6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
13. Debug and Test
13.1 Description
The AT91CAP9 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 down-
loading 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 han-
dling 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.