ADSP-BF561 EZ-KIT Lite Evaluation System Manual
2-15
EZ-KIT Lite Hardware Reference
Programmable Flag Push Buttons (SW9–6)
Four push buttons,
SW9–6
, are provided for general-purpose user input.
The buttons connect to the processor’s programmable flag pins
PF8–5
.
The push buttons are active “
HIGH
” and, when pressed, send a
High
(
1
) to
the processor. Refer to
“LEDs and Push Buttons” on page 1-9
information on how to use the PFs when programming the processor. The
push button enable switch (
SW4
) is capable of disconnecting the push but-
tons from the PF (refer to
“Push Button Enable Switch (SW4)” on
). The programmable flag signals and their corresponding
switches are shown in
Power LED (J7)
When
J7
is lit (green), it indicates that power is being properly supplied to
the board.
Reset LEDs (LED2 and LED3)
When
LED2
is lit, it indicates that the master reset of all the major ICs is
active. When
LED3
is lit, the USB interface chip (
U34
) is being reset. The
USB chips only reset on power-up, or if USB communication has not
been initialized.
Table 2-9. Programmable Flag Switches
Processor Programmable Flag Pin
Push Button Reference Designator
PF5
SW6
PF6
SW7
PF7
SW8
PF8
SW9
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