Grundig GDV 130, Руководство по обслуживанию

Страница: 19 / 36

GRUNDIG Service 2 - 2
GDV 130… Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
Serial
Input
I/F
Mode
Control
I/F
8X Oversampling
Digital Filter with
Function
Controller
Crystal/OSC
XTI
SCK
XTO CLKO V
CC1
AGND1 V
DD
DGND
Enhanced
Multi-level
Delta-Sigma
Modulator
V
OUT
L
V
CC2
L
V
CC2
R
A
GND2L
A
GND2L
EXTL
Open Drain
DAC
Low-pass
Filter
Low-pass
Filter
BPZ-Cont.
V
OUT
R
EXTR
ZERO
DAC
MC/DM1
ML/IIS
LRCIN
DIN
BCKIN
CS/IWO
MD/DM0
MODE
MUTE
RST
Power Supply
LRCIN
DIN
BCKIN
CLKO
XTI
XTO
DGND
V
DD
V
CC
2R
AGND2R
EXTR
NC
V
OUT
R
AGND1
ML/IIS
MC/DM1
MD/DM0
MUTE
MODE
CS/IWO
RST
ZERO
V
CC
2L
AGND2L
EXTL
NC
V
OUT
L
V
CC
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
PCM1716E
IC-Blockdiagramme / IC Block Diagrams
IC U301 (PCM1716E)
PIN NAME I/O DESCRIPTION
1
2
LRCIN
DIN
IN
IN
Left and Right Clock Input. This clock is equal to
the sampling rate - f S . (1)
Serial Audio Data Input (1)
3
4
5
6
BCKIN
CLKO IN
OUT
XTI
XTO IN
OUT
Bit Clock Input for Serial Audio Data. (1)
Buffered Output of Oscillator. Equivalent to System Clock.
Oscillator Input (External Clock Input)
Oscillator Output
7
8
9
10
DGND
V DD Ñ
Ñ
V
CC
2R
AGND2R
Ñ
Ñ
11
12
13
14
EXTR
NC
OUT
Ñ
V outR
AGND1
OUT
Ñ
Digital Ground
Digital Power +5V
Analog Power +5V
Analog Ground
Rch, Common Pin of Analog Output Amp
No Connection
Rch, Analog Voltage Output of Audio Signal
Analog Ground
15
16
17
18
V
CC
1
V
OUT
L
Ñ
OUT
NC
EXTL
Ñ
OUT
19
20
21
22
AGND2L
V cc2L
Ñ
Ñ
ZERO
RST OUT
IN
Analog Power +5V
Lch, Analog Voltage Output of Audio Signal
No Connection
Lch, Common Pin of Analog Output Amp
Analog Ground
Analog Power +5V
Zero Data Flag
Reset. When this pin is low, the DF and modulators are
held in reset. (2)
23
24
25
26
CS/IWO
MODE
IN
IN
MUTE
MD/DM0 IN
IN
27
28
NOTES: (1) Pins 1, 2, 3; Schmitt Trigger input. (2) Pins 22, 24, 25, 26, 27,
28; Schmitt Trigger input with pull-up resister. (3) Pin 23; Schmitt Trigger
input with pull-down resister.
MC/DM1
ML/IIS IN
IN
Chip Select/Input Format Selection. When this pin is low,
the Mode Control is effective. (3)
Mode Control Select. (H: Software, L: Hardware) (2)
Mute Control
Mode Control, DATA/De-emphasis Selection 1 (2)
Mode Control, BCK/De-emphasis Selection 2 (2)
Mode Control, WDCK/Input Format Selection (2)