Bu9253As (Ic901) : Lpf & Echo Mixer - JVC HX-Z1 Service Manual

5.17 BU9253AS (IC901) : LPF & Echo mixer
• Pin layout & Block diagram
• Pin function
Pin No. Symbol I/O
1 GND
2 ECHO VR
3
4 BIAS
5 DAINT IN
6 DAINT OUT O
7 DALPF IN
8 DALPF OUT O
9 MIX OUT O
10 MIX IN
11 ADLPF IN
12 ADLPF OUT O
13 ADINT OUT O
14 ADINT IN
15 VCC
16 NC2
17 MUTE
18 CR
Descriptions
- Connect GND
I Echo level control
- Non connect
- Analog part DC bias
I DA side integrator input
DA side integrator output
I DA side LPF input
DAside LPF output
Mix AMP output for original tone& echo tone
I Mix AMP input pin for original tone
I AD side LPF input
AD side LPF output
AD side integrator output
I AD side integrator input
- Power supply
- Non connect
I Mute control signal input
- CR pin for oscillator
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