Audio Stereo Interface; User Interface; Debug Interface; Expansion Slot - Atmel AT91SAM9G20-EK User Manual

Board Description
One Ethernet 100-base TX with three status LEDs
3.10

Audio Stereo Interface

Stereo Audio Codec with Integrated Headphone Driver (50 mW on 16W @ 3.3V)
One Headset output (J4) with master volume and mute controls
3.11

User Interface

Two user input push buttons
One user green LED
One yellow power LED (can be also software controlled)

Debug Interface

All I/Os of the AT91SAM9G20 are routed to peripheral extension connectors
All I/Os of the AT91SAM9G20 Image Sensor Interface are routed to peripheral extension connectors
All EBI Signals of the AT91SAM9G20 are routed to extension footprint connectors (J25)
3.12 Debug Interface
20-pin JTAG/ICE interface connector
DBGU COM port
3.13

Expansion Slot

One on-board DataFlash device
Two SD/MMC card slots, the system can boot from slot J35
All I/Os of the AT91SAM9G20 are routed to peripheral extension connectors
All I/Os of the AT91SAM9G20 Image Sensor Interface are routed to peripheral extension connectors
All EBI Signals of the AT91SAM9G20 are routed to extension footprint connectors (J25)
This allows the developer to check the integrity of the components and to extend the features of the
board by adding external hardware components or boards.
3-6
6413C–ATARM–18-Feb-09
AT91SAM9G20-EK Evaluation Board User Guide