Seven-function wireless remote control receiving circuit diagram

The picture shows the seven-function toy car dedicated radio remote control receiving circuit KA2309. The functions of each pin are as follows. Pin 1: regulator output (2.5V); Pin 2: buffer output; Pin 3: Miller integrator input; Pin 4: Miller integrator output; Pin 5: pre-drive output; Pin 6: acceleration output; Pin 7: Drive output; Pin 8: Left-turn output; Pin 9: Right-turn output; Pin 10: Positive power supply 3~18V; Pin 11: Integrator output; Pin 12: Amplifier output; Pin 13: Amplifier 2 bypass ; Pin 14: ground; Pin 15: Amplifier 1 bypass; Pin 16: Super regenerative detection signal input. KA2309 should be used in conjunction with KA2310.