LEDs and Push Buttons
3-14
ADSP-21262 EZ-KIT Lite Evaluation System Manual
Reset LEDs (LED9, LED12)
When
LED9
is lit (red), the master reset of all the major ICs is active.
When
LED12
is lit (red), the USB interface chip (
U34
) is being reset. The
USB chip is reset only on power-up, or if USB communication has not
been initialized.
Power LED (LED10)
When
LED10
is lit (green), it indicates that power is being properly sup-
plied to the board.
SPDIF GPO1 LED (LED11)
The SPDIF GPO1 LED (
LED11
) connects to
GPO1
of the CS8416. The
functionality of GPO1 is programmable via SPI.
USB Monitor LED (LED13)
The USB monitor LED (
LED13
) indicates that USB communication has
been initialized successfully and you may connect to the processor using a
Vi+ EZ-KIT Lite session. Once the USB cable is plugged into
the board, it takes approximately 15 seconds for the USM monitor LED
to light. If the LED does not light, try cycling power on the board and/or
reinstalling the USB driver (see
“Installing EZ-KIT Lite USB Driver” on
page 1-7
).
Push Buttons (SW4–1)
Four push buttons (
SW4–1
) are provided for general-purpose user input.
Two of the push buttons are connected to the DSP’s
FLAG
pins. The other
two are connected to the DSP’s DAI. The push buttons are active “
HIGH
”
and, when pressed, send a
High (1)
to the processor. Refer to
“Using
LEDs and Push Buttons” on page 2-6
for more information. The push
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