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AT91SAM9260 bảng dữ liệu(PDF) 49 Page - ATMEL Corporation

tên linh kiện AT91SAM9260
Giải thích chi tiết về linh kiện  AT91 ARM Thumb Microcontrollers
PDF  798 Pages
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nhà sản xuất  ATMEL [ATMEL Corporation]
Trang chủ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT91SAM9260 bảng dữ liệu(HTML) 49 Page - ATMEL Corporation

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49
6221I–ATARM–17-Jul-09
AT91SAM9260
11. AT91SAM9260 Debug and Test
11.1
Description
The AT91SAM9260 features a number of complementary debug and test capabilities. A com-
mon 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.
A set of dedicated debug and test input/output pins gives direct access to these capabilities from
a PC-based test environment.
11.2
Embedded Characteristics
• ARM926 Real-time In-circuit Emulator
– Two real-time Watchpoint Units
– Two Independent Registers: Debug Control Register and Debug Status Register
– Test Access Port Accessible through JTAG Protocol
– Debug Communications Channel
• Debug Unit
–Two-pin UART
– Debug Communication Channel Interrupt Handling
– Chip ID Register
• IEEE1149.1 JTAG Boundary-scan on All Digital Pins



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