Pioneer MJ-HX3000 Manual de serviço - Página 30

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Pioneer MJ-HX3000 Manual de serviço
MJ-HX5000, MJ-HX3000, MJ-HX2000, MJ-HX700

7.2 PARTS

7.2.1 IC
7 52186 (AK4518-VF-E2) (AD/DA PCB ASSY : IC801)
7 AD/DA Converter IC
¶ Block Diagram
AINL
6
VCML
5
AINR
3
VCMR
4
VRAD
2
VRDA
1
VCOM
21
AOUTL
19
AOUTR
20
¶ Pin Arrangement
No.
Pin Name
I/O
1
VRDA
I
Reference voltage input for DAC and VA
2
VRAD
I
Reference voltage input for ADC and VA
3
AINR
I
R ch analog input
R ch common voltage output , 0.45
4
VCMR
O
Connect an electrolytic capacitor (about 4.7 F) and a ceramic capacitor (0.1 F) between this pin and AGND.
L ch common voltage output , 0.45
5
VCML
O
Connect an electrolytic capacitor (about 4.7 F) and a ceramic capacitor (0.1 F) between this pin and AGND.
6
AINL
I
L ch analog input
7
PWAD
I
ADC power down mode L: power down
8
PWDA
I
DAC power down mode L: power down
9
MCLK
I
Master clock input
10
LRCK
I
Input/output channel clock pin
11
SCLK
I
Audio serial data clock pin
12
SDTO
O
Audio serial data output
13
DGND
Digital ground
14
VD
Digital power supply
15
SDTI
I
Audio serial data input
16
CMODE
I
Master clock selection "H": 384fs or 512fs, "L": 256fs
17
DEM1
I
Deemphasis frequency selection
18
DEM0
19
AOUTL
O
L ch analog output
20
AOUTR
O
R ch analog output
Common voltage output , 0.45
21
VCOM
O
Connect an electrolytic capacitor (about 4.7 F) and a ceramic capacitor (0.1 F) between this pin and AGND.
22
AGND
Analog ground pin
23
VB
Substraight pin
24
VA
Analog power supply
30
¶ The information shown in the list is basic information and may not
VA
AGND
VB
VD
DGND
24
22
23
14
Decimation
Filter
Modulator
Decimation
Modulator
Filter
Common Voltage
LPF
Modulator
LPF
Modulator
7
8
PWAD
PWDA
VA
VA
VA
correspond exactly to that shown in the schematic diagrams.
13
Clock
Divider
Serial I/O
Interface
8
Interpolator
8
Interpolator
18
DEM0
DEM1
Function
9
MCLK
16
CMODE
10
LRCK
11
SCLK
12
SDTO
15
SDTI
17