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