Analog Devices ADSP-21160 EZ-KIT Lite, Руководство пользователя

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LEDs and Push Buttons
2-10 ADSP-21160 EZ-KIT Lite Evaluation System Manual
Board Reset Push Button (SW2)
The
RESET
push button (
SW2
) resets all of the ICs on the board. The only
exception is the USB interface chips. These chips are not being reset when
the push button is pressed after the USB cable has been plugged in and
communication correctly initialized with the PC. After USB communica-
tion has been initialized, the only way to reset the USB is by powering
down the board.
Interrupt Push Buttons (SW3–5)
Three push buttons connect to the three processor
~IRQ
pins. The pins are
always input and, when asserted (
0
) and when interrupts are enabled, the
processor goes to the corresponding interrupt vector. Refer to “Interrupt
Pins” on page 1-9 for more information about the use of the IRQs when
programming the processor. The push button reference designators and
corresponding interrupt signals are summarized in
Table 2-5 .
Table 2-5. Interrupt Push Buttons
Interrupt Signal Push Button Reference Designator
IRQ0 SW3
IRQ1 SW4
IRQ2 SW5
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