Service manual

CD-DV999W/CD-DV777W
8 – 14
IC851 VHIAN80T53/-1: Multi Regulator (AN80T53)
ICK1 VHiM65856SP-1: Mic Amp. (M65856SP) (1/2)
Pin
No.
Terminal Name Function
1 REG4 Output 5.1 V power supply with a minimum peak out current of 1200 mA.
2 REG3 Output 13 V power supply with a minimum peak out current of 1350 mA.
3 VCC Connected to Power supplies.
4 GND Connected to the IC substrate.
5 MODE 1 REG1, REG2,REG3 and REG4 outputs are turned ON when this pin is 5 V.
6 REG2 Output 10 V power supply with a minimum peak out current of 800 mA.
7 REG1 Output 8.5 V power supply with a minimum peak out current of 700 mA.
5 2 3 4 1 7 6
Peak Current Protection,
Thermal Protection,
Load Short Protection.
Out puts
-
+
-
+
Prc
Drive
-
+
Prc
Drive
-
+
Prc
Drive
Prc
Drive
Reference
Voltage
MODE1 REG3
13V
REG4
5.1V
REG1
8.5V
REG2
10.0V
VCC GND
Figure 8-14 BLOCK DIAGRAM OF IC
Pin No. Port Name Input/Output Function
1 MIC SW Input Microphone SWL: MIC OFF, H: MIC ON.
2 MCLKC ONT — Clock Control. Controls built-in clock generation circuit with external R.
3 VALCL — ALC operating voltage setting terminal. To set ALC operating voltage according to applied voltage.
4 MIC1 IN Input Microphone 1 input. To connect MIC 1.
5 ALC1 — ALC1 control. To connect ALC1 attack/recovery time setting capacitor.
6 MIC1NF IN Input Microphone 1 negative feedback input. To connect low cut-off frequency of MIC 1 amplifier setting
capacitor.
7 MIC1 OUT Output Microphone 1 output.
8 MIC1 VOL IN Input Microphone 1 volume input. To connect capacitor to reduce noise generated at time of volume
change.
9 MIC2 IN Input Microphone 2 input. To connect MIC 2.
10 ALC2 — ALC2 control. To connect ALC 2 attack/recovery time setting capacitor.
11 MIC2 NF IN Input Microphone 2 negative feedback input. To connect low cut-off frequency of MIC 2 amplifier setting
capacitor.
12 MIC2 OUT Output Microphone 2 output.
13 MIC2 VOL IN Input Microphone 2 volume input. To connect capacitor to reduce noise generated at time of volume
change.
14 MICOUT Output Microphone output. Mixing output of MIC 1 and MIC 2.
15 LPF1 IN1 Input Low pass filter 1 input 1. Pre-filter before A/D converter for digital delay.
16 LPF1 IN2 Input Low pass filter 1 input 2. Pre-filter before A/D converter for digital delay.
17 LPF1 OUT Output Low pass filter 1 output. Pre-filter before A/D converter for digital delay.
18 AD INTOUT Output A/D integrator output. Composes D/A conversion integrator with external capacitor.
19 AD INTIN Input A/D integrator input. Composes D/A conversion integrator with external capacitor.
20 ADCONT — A/D control. To determine adaptive time constant of A/D converter with ADM system.
21 REF — Reference power output. To connect 1/2 Vcc output and filter capacitor.
22 GND — Ground.
23 VCC Input Power supply.
24 DACONT — D/A control. To determine adaptive time constant of D/A converter with ADM system.s
25 DAINTIN Input D/A Integrator input. Composes D/A conversion integrator with external capacitor.
26 DAINTOUT Output D/A Integrator output. Composes D/A conversion integrator with external capacitor.