Sharp CD-BK260V Service Manual page 58

CD-BK260V/CD-BK2700V/CD-BK280V
ICK1 VHiM65856SP-1: Mic Amp. (M65856SP) (1/2)
Pin No. Port Name
1 MIC SW
2 MCLKCONT
3 VALC
4 MIC1 IN
5* ALC1
6* MIC1NFIN
7* MIC1 OUT
8 MIC1 VOLIN
9 MIC2 IN
10 ALC2
11 MIC2 NFIN
12 MIC2 OUT
13 MIC2 VOLIN
14 MICOUT
15 LPF1IN1
16 LPF1 IN2
17 LPF1 OUT
18 AD INTOUT
19 AD INTIN
20 ADCONT
21 REF
22 GND
23 VCC
24 DACONT
25 DAINTIN
26 DAINTOUT
27 LPF2IN1
28 LPF2IN2
29 LPF2OUT
30 VOLIN
31 L IN
32 R IN
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Input/Output
Input Microphone SW L: MIC OFF, H: MIC ON
— Clock Control.
Controls built-in clock generation circuit with external R.
— ALC operating voltage setting terminal.
To set ALC operating voltage according to applied voltage.
Input Microphone 1 input.
To connect MIC 1.
— ALC1 control.
To connect ALC1 attack/recovery time setting capacitor.
Input Microphone 1 negative feedback input.
To connect low cut-off frequency of MIC 1 amplifier setting capacitor.
Output Microphone 1 output.
Input Microphone 1 volume input.
To connect capacitor to reduce noise generated at time of volume change.
Input Microphone 2 input.
To connect MIC 2.
— ALC2 control.
To connect ALC2 attack/recovery time setting capacitor.
Input Microphone 2 negative feedback input.
To connect low cut-off frequency of MIC 2 amplifier setting capacitor.
Output Microphone 2 output.
Input Microphone 2 volume input.
To connect capacitor to reduce noise generated at time of volume change.
Output Microphone output.
Mixing output of MIC 1 and MIC 2.
Input Low pass filter 1 input 1.
Pre-filter before A/D convertor for digital delay.
Input Low pass filter 1 input 2.
Pre-filter before A/D convertor for digital delay.
Output Low pass filter 1 output.
Pre-filter before A/D convertor for digital delay.
Output A/D integrator output.
Composes D/A conversion integrator with external capacitor.
Input A/D integrator input.
Composes D/A conversion integrator with external capacitor.
— A/D control.
To determine adaptive time constant of A/D convertor with ADM system.
— Reference power output.
To connect 1/2 Vcc output and filter capacitor.
— Ground.
Input Power supply.
— D/A control.
To determine adaptive time constant of D/A convertor with ADM system .
Input D/A Integrator input.
Composes D/A conversion integrator with external capacitor.
Output D/A Integrator output.
Composes D/A conversion integrator with external capacitor.
Input Low pass filter 2 input 1.
Post-filter after D/A convertor for digital delay.
Input Low pass filter 2 input 2.
Post-filter after D/A convertor for digital delay.
Output Low pass filter 2 output.
Post-filter after D/A convertor for digital delay.
Input Echo effect/Echo feed back volume input.
To connect capacitor to reduce noise generated at time of volume change.
Input Lch line input.
Input Rch line input.
Function
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