Datasheet

LEDs and Push Buttons

2-16 ADSP-21369 EZ-KIT Lite Evaluation System Manual

General Purpose LEDs (LED1–8)

There are eight general-purpose LEDs on the board. Five LEDs are con-

nected to the DPI interface, two LEDs are connected to the DAI interface,

and one LED is connected to FLAG3 of the processor. “LEDs and Push

Buttons” on page 1-12 summarizes the LED connections. To use an LED

connected to the DAI or DPI, program its respective register on the pro-

cessor. For more information on how to program the registers, refer to the

ADSP-21368 SHARC Processor Hardware Reference (includes

ADSP-21369).

Power LED (LED9)

When LED9 is lit (green), it indicates that power is being supplied to the

board properly.

Reset LEDs (LED10)

When LED10 is lit (red), a master reset of all the major ICs is active.

USB Monitor LED (ZLED3)

The USB monitor LED (ZLED3) indicates that USB communication has

been initialized successfully, and you can connect to the processor using a

VisualDSP++ EZ-KIT Lite session. Once the USB cable is plugged into

the board, it takes approximately 15 seconds for the USB monitor LED to

light. If the LED does not light, try cycling power on the board and/or

reinstalling the USB driver (see the VisualDSP++ Installation Quick Refer-

ence Card).

When VisualDSP++ is actively communicating with the EZ-KIT

Lite target board, the LED can flicker, indicating communications

handshake.