36
36
AVR-3805 / AVC-3890
PCM1804 (AD: IC519)
2
1
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
V
REF
L
AGNDL
V
COM
L
V
IN
L+
V
IN
L
−
FMT0
FMT1
S/M
OSR0
OSR1
OSR2
BYPAS
DGND
V
DD
V
REF
R
AGNDR
V
COM
R
V
IN
R+
V
IN
R
−
AGND
V
CC
OVFL
OVFR
RST
SCKI
LRCK/DSDBCK
BCK/DSDL
DATA/DSDR
TOP VIEW
SCKI
V
IN
L+
V
COM
L
AGNDL
V
REF
L
V
REF
R
AGNDR
V
COM
R
V
IN
R+
V
IN
R
−
OSR0
OSR1
OSR2
S/M
FMT0
FMT1
LRCK/
DSDBCK
BCK/DSDL
DATA /DSDR
OVFL
OVFR
BYPAS
RST
CLK Control
V
IN
L
−
DGND V
DD
AGND
V
CC
Delta-sigma
Modulator (L)
V
REF
L
V
REF
R
Delta-sigma
Modulator (R)
Power Supply
Decimation
Filter (L)
Decimation
Filter (R)
HPF
HPF
Serial
Output
Interface
2
3
4
5
6
7
8
1
IN
ABLC
C1
C2 GND fo N.C.
OUT Vcc
Detector &
Comparator
Integrator
CXA1511M (CO: IC501)
Except Japan model
Head
Amp
Limiter
Amp
BPF
BEF
Hysteresis
Comparator
NJM2229S (CV: IC452)
6
7
9
10
13
14
15
16
8
11
12
4
3
2
1
5
1
16
Sync Sepa
Sync Det
Phase
Det
Vsync Sepa
32fH
VCO
1/32
FRONT VIEW
Pin Name
Function
PCM1804 Terminal Function
Pin
No.
1
V
REF
L
L-channel voltage reference output, requires capacitors for decoupling to AGND.
2
AGNDL
Analog ground for V
REF
L.
3
V
COM
L
L-channel analog common mode output.
4
V
IN
L+
I
L-channel analog input, positive pin.
5
V
IN
L
−
I
L-channel analog input, negative pin.
6
FMT0
I
Audio data format 0. See TABLE V. *
7
FMT1
I
Audio data format 1. See TABLE V. *
8
S/M
I
Master/slave mode selection. See TABLE IV. *
9
OSR0
I
Oversampling ratio 0. See TABLE I. TABLE II. *
10
OSR1
I
Oversampling ratio 1. See TABLE I. TABLE II. *
11
OSR2
I
Oversampling ratio 2. See TABLE I. TABLE II. *
12
BYPAS
I
HPF bypass control. HIGH: HPF disable, LOW: HPF enable. ***
13
DGND
Digital ground.
14
V
DD
Digital power supply.
15
DATA/DSDR
O
L-channel and R-channel audio data output in PCM mode. R-channel Audio data output in DSD mode.(DSD output, when DSD mode)
16
BCK/DSDL
I/O
Bit clock input/output in PCM mode. L-channel audio data output in DSD mode. ***
17
LRCK/DSDBCK
I/O
Sampling clock input/output in PCM and DSD mode. ***
18
SCKI
I
System clock input; 128fs, 256fs, 384fs, 512fs or 768fs. **
19
RST
I
Reset, power down input, active LOW. *
20
OVFR
O
Overflow signal of R-channel in PCM mode. This is available in PCM mode only.
21
OVFL
O
Overflow signal of L-channel in PCM mode. This is available in PCM mode only.
22
V
CC
Analog power supply.
23
AGND
Analog ground.
24
V
IN
R
−
I
R-channel analog input, negative pin.
25
V
IN
R+
I
R-channel analog input, positive pin.
26
V
COM
R
R-channel analog common mode output.
27
AGNDR
Analog ground for V
REF
R.
28
V
REF
R
R-channel voltage reference output, requires capacitors for decoupling to AGND.
I/O
* Schmitt trigger input with internal pull-down (51kohm typically), 5V tolerant.
** Schmitt trigger input, 5V tolerant.
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