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EVANET User's Manual Generating Chip Select signals for the push buttons and LEDs Signal CETAST# active CELED# active A11 1 0 A12 1 1 CS3# 0 0 OE# 0 X With the jumper J18 either the output signal of the pulse generator U3 or the interrupt request signal of the CompactFlash card can be connected to the interrupt input port PORTC3 of the NET+ARM. If both signals are needed, one of them can be connected to a free port at the header X16 (CD) with a cable. With the potentiometer P1, the frequency of the square wave output signal of the pulse generator output can be varied between 1300Hz and 14kHz. Configuration Jumper J18 Connected Pins Function 1-2 Interrupt Request from CompactFlash 2-3 Output signal of pulse generator 23
