Denon AVR-550SD, Service Manual

Page: 10 / 71

10
AVR-550SD
AK4588 (MAIN: IC219)
Pin assignments
Block Diagram
(Top View)
C
C
L
K/SC
L
C
D
T
I/SD
A
CS
N
DA
UX
1
SD
T
I4
SD
T
I3
SD
T
I2
SD
T
I1
XT
L1
XT
L0
PD
N
MA
S
T
E
R
DZ
F2
DZ
F1
LO
U
T
4
NC
RO
UT4
NC
LO
U
T
3
NC
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
80 79
78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
INT1
BOUT
TVDD
DVDD
DVSS
XTO
XTI
TEST3
MCKO2
MCKO1
COUT
UOUT
VOUT
SDTO2
BICK2
LRCK2
SDTO1
BICK1
LRCK1
CDTO
TEST1
RX1
NC
RX0
AVSS
AVDD
VREFH
VCOM
RIN
LIN
NC
ROUT1
NC
LOUT1
NC
ROUT2
NC
LOUT2
NC
ROUT3
IN
T
0
TX
1
TX
0
MC
LK
VIN DA
U
X
2
I2C RX
7
CA
D
1
RX
6
CA
D
0
RX
5
T
EST
2
RX
4
P
V
DD
R PVSS RX
3
NC RX
2
Input
Selector
Clock
Recovery Clock
Generator
DAIF
Decoder
AC-3/MPEG
Detect
DEM
P P I/F
Audio
I/F
X'tal
Oscillator
PDN
INT0
LRCK2
BICK2
SDTO2
DAUX2
MCKO2
XTO XTI
R PVDD PVSS
CDTI
CDTO
CCLK
CSN
DVDD
DVSS
TVDD
MCKO1
I2C
RX0
RX1
RX2
RX3
RX4
RX5
RX6
RX7
DIT
TX0
Error &
Detect
STATUS
INT1
Q-subcode
buffer
TX1
B,C,U,
VOUT
8 to 3
VIN
Audio
I/F
LPF
LPF
LPF
LPF
LPF
LPF
LOUT1
ROUT1
LOUT2
ROUT2
LOUT3
ROUT3
DAC
DATT
DEM
ADC HPF
ADC
HPF
RIN
LIN
LRCK1
BICK1
SDTI1
SDTI2
SDTI3
DAUX1
MCLK
LRCK
BICK
SDOUT
SDIN1
SDIN2
SDIN3
MCLK
SDTO1
Format
Converter
SDTI4
SDIN4
LPF
LPF
LOUT4
ROUT4
DAC
DATT
DEM
DAC
DATT
DEM
DAC DATT
DEM
DAC
DATT
DEM
DAC
DATT
DEM
DAC
DATT
DEM
DAC
DATT
DEM
AVDD
AVSS