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4.4.6 Programmable Flag Push Buttons (SW4, SW5, SW6, SW7)
Four push buttons are provided for general-purpose user input. SW4-7 connect to
the DSP’s Programmable Flag (PF) pins, PF4-7. The push buttons are active high
and when pressed send a high (1) to the DSP. Refer to section 3.6 for more
information about the use of the PFs when programming the DSP. Table 4-5
shows the PF signal and the switch it is connected to.
Table 4-5: Programmable Flag Switches
Push Button
Reference Designator
DSP Programmable
Flag Pin
SW4 PF4
SW5 PF5
SW6 PF6
SW7 PF7
4.4.7 Reset Push Button (SW8)
The RESET push button resets all of the ICs on the board. This reset does not
affect the USB interface chip (U11) unless communication has not been
initialized with a PC. After USB communication has been initialized, the only
way to reset the USB is by powering down the board.
ADSP-21535 EZ-KIT Lite Evaluation System Manual
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