Analog Devices ADSP-21364 Benutzerhandbuch

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ADSP-21364 EZ-KIT Lite Evaluation System Manual

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 

FLAG

 pins of 

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 can disconnect processor pins attached to the push buttons. See 

how to disable the push buttons from driving the corresponding processor 
pins.

The value of the push buttons connected to the 

FLAG

 pins can be deter-

mined by reading the 

FLAG

 register. The push buttons connected to the 

DAI pins must be configured as interrupts. It is necessary to set up an 
interrupt routine to determine each pin’s state. 

 shows how each push button connects to the processor. Refer to 

the related example program shipped with the EZ-KIT Lite for more 
information.

Table 1-2. Push Button Connections

SW1

FLAG1

SW2

FLAG2

SW3

DAI_P19

SW4

DAI_P20