Flag Leds (Led2, Led3, Led4); Usb Monitor Led (Led5); Power Led (Led6); Irq Push Buttons (Sw3, Sw4, Sw5) - Analog Devices ADSP-21160 EZ-KIT LITE Manual

4.4.2 Flag LEDs (LED2, LED3, LED4)

LEDs are connected to three of the DSP's flag pins, FLAG0-2. These LEDs are
active HIGH and are lit by an output of "1" from the DSP. Refer to section
for more information about using of the flags when programming the DSP.

Table 4-3: Programmable Flag LEDs

LED Reference
Designator
LED2
LED3
LED4

4.4.3 USB Monitor LED (LED5)

The USB Monitor LED (LED5) indicates that USB communication has been
initialized successfully and you may connect to the DSP using a VisualDSP++
EZ-KIT Lite session. This should take approximately 15 seconds after the USB
cable has been connected. If the LED does not light, cycle power on the board
and/or reinstall the USB driver (see section 2.4.5).

4.4.4 Power LED (LED6)

LED6 is a green LED that indicates when power is being properly supplied to the
board.

4.4.5 IRQ Push Buttons (SW3, SW4, SW5)

Push buttons are connected to the three DSP ~IRQ pins. These pins are always
input and when asserted (0) and when interrupts are enabled, the DSP goes to the
corresponding interrupt vector. Refer to section
the use of the IRQs when programming the DSP.
and the switch to which it is connected.

Table 4-4: Programmable Flag Switches

Push Button
Reference Designator
SW3
SW4
SW5
ADSP-21160 EZ-KIT Lite Evaluation System Manual
DSP Programmable
Flag Pin
FLAG0
FLAG1
FLAG2
DSP Programmable
Flag Pin
~IRQ0
~IRQ1
~IRQ2
3.4 for more information about
Table 4-4 shows the IRQ signal
3.4
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