Atmel AT91SAM9RL-EK, Руководство пользователя

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Board Description
AT91SAM9RL-EK Evaluation Board User Guide 3-5
6325A–ATARM–08-Jan-08
„ Software selectable, 32768Hz Low-power external standard crystal Oscillator or Internal Low Power
RC Oscillator
3.6 Reset Circuitry
„ Internal reset controller with bi-directional reset pin
„ External reset pushbutton
3.7 Shutdown Controller
„ Programmable shutdown and Wake-Up
„ Wake-up push button
3.8 Power Supply Circuitry
„ On-board 1.2V High Efficiency step-down charge pump regulator with shutdown control
„ On-board 3.3V linear regulator with shutdown control
3.9 Remote Communication
„ One serial interface (DBGU COM Port) via RS-232 DB9 male socket
„ One additional serial interface (COM Port 1) with RTS/CTS handshake control via RS-232 DB9 male
socket
„ One High Speed USB 2.0 port 480 Mbits per second (UDP)
3.10 Audio Stereo Interface
„ One AC97 audio CODEC with:
„ One 32 Ohm Stereo Headset output (J16) with master volume and mute controls
„ One line-in
„ One Mono/Stereo Microphone input.
3.11 User Interface
„ Two user input pushbuttons
„ Two user green LED
„ One yellow power LED (can be also software controlled)
3.12 Debug Interface
„ 20-pin JTAG/ICE interface connector
„ DBGU COM port