19.1 IC305 (C1BB00000577) Karaoke Echo

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Pin No.
Mark
I/O
Function
1
 		GND
 		-
Ground
2
 		ECHO VR
 		I
 		Echo level DC control
3
 		BIAS
 		I
 		Analog DC bias
4
 		DAINT IN
 		I
 		DA integrator input
5
 		DAINT OUT
 		O
 		DA integrator output
6
 		DALPF IN
 		I
 		DA LPF input
7
 		DALPF OUT
 		O
 		DA LPF output
8
 		MIX OUT
 		O
 		Source sound and echo sound mixing output
9
 		MIX IN
 		I
 		Mixing amplifier source sound input
10
 		ADLPF IN
 		I
 		AD LPF input
11
 		ADLPF OUT
 		O
 		AD LPF output
12
 		ADINT OUT
 		O
 		AD integrator output
13
 		ADINT IN
 		I
 		AD integrator input
14
 		Vcc
 		-
Vcc
15
 		MUTE
 		O
 		Mute control
16
 		CR
 		O
 		Oscillator output


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