Push Buttons (Sw8-11); Board Reset Push Button (Sw12) - Analog Devices Lite ADSP-21371 EZ-KIT System Manual

LEDs and Push Buttons
Push Buttons (SW8–11)

Board Reset Push Button (SW12)

2-16
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Four push buttons (
SW8—11
Two push buttons are connected to the
the other two are connected to the DAI of the processor. The push but-
tons are active high and, when pressed, send a high (
Refer to "LEDs and Push Buttons" on page 1-15
The push button enable switch (
buttons from corresponding processor pins. Refer to
Switch (SW7)" on page 2-12
The push buttons and corresponding processor signals are summarized in
Table 2-9.
Table 2-9. Push Button Connections
Push Button Label Push Button Reference Designator
PB1 SW8
PB2 SW11
PB3 SW10
PB4 SW9
The push button (
RESET
exception is the USB interface chip. The chip is not reset when the push
button is pressed after the USB cable has been plugged in and communi-
cation initialized correctly with the PC. After USB communication has
been initialized, the only way to reset the USB is by powering down the
board.
ADSP-21371 EZ-KIT Lite Evaluation System Manual
) are provided for general-purpose user input.
pins of the processor, while
FLAG
) is capable of disconnecting the push
SW7
for more information.
) resets all of the ICs on the board. The only
SW12
) to the processor.
1
for more information.
"Push Button Enable
Processor Pin
FLAG1/IRQ1
FLAG0/IRQ0
DAI19
DAI20