Leds And Push Buttons - Analog Devices ADSP-21375 Manual

The RCA connector (
electret microphone on this connector, configure the
to the instructions in
page 2-12. The four output channels connect to the RCA connector
Channel 4 of the codec connects to the headphone jack
information about the connectors see
Example programs are included in the EZ-KIT Lite installation directory
to demonstrate how to configure and use the board's analog audio
interface.

LEDs and Push Buttons

The EZ-KIT Lite has eight general-purpose user LEDs and four gen-
eral-purpose push buttons.
Two of the general-purpose push buttons are attached to the
the processor, while the other two are attached to the DAI pins. All of the
push buttons connect to the processor through a DIP switch. The DIP
switch allows processor pins, which connect to the push buttons, to be dis-
connected. See
instructions on how to disable a push button from driving its correspond-
ing processor pin.
The state of the push buttons, connected to the
mined by reading the
DAI pins must be configured as interrupts. It is necessary to set up an
interrupt routine to determine each pin's state.
button and processor connections. Refer to the related example program
shipped with the EZ-KIT Lite for more information.
ADSP-21375 EZ-KIT Lite Evaluation System Manual
) is used to input analog audio. When using an
J10
"Electret Microphone Select Switch (SW4)" on
"Push Button Enable Switch (SW7)" on page 2-13
register. The push buttons connected to the
FLAG
Using ADSP-21375 EZ-KIT Lite
SW4
"Connectors" on page
pins, can be deter-
FLAG
Table 1-2
switch according
.
J5
. For more
J9
2-21.
pins of
FLAG
for
shows the push
1-11