I/O I I � I I � O O O O I I System reset input.
Description
RES HCTR VDD FMIN AMIN VSS E0 AIN AOUT AGND TEST1 XIN
Universal counter dedicated input port. Power supply pin. FM VCO (local oscillator) input. AM VCO (local oscillator) input. Ground pin. The main charge pump output.
Transistor used for the low-pass filter amplifier. Connect AGND to ground.
IC test pins. These pins must be tied to ground. Connections for a 75kHz crystal oscillator element.