VSX-LX50
48
1
2
3
4
1
2
3
4
C
D
F
A
B
E
ADC
IC481
AK5358AET
8ch DAC
IC401
AK4359VF
2nd DSP
IC201
DSPC56371AF180
1st DSP
IC101
ADSP-21366
KBCZ-1AA
DIR
IC301
AK4114VQ
Analog IN (L/R)
SPDIF out (1+1stby)
COAX IN (2)
SPDIF in (5)
SPDIF
in
(1stby)
XM Block
X501
45.1584MHz
: I2S MCLK
: Control, memory bus line, etc
: Analog audio signal *Alphabets before
pin numbers mean the channel names.
: SPDIF, Operation Clock, etc
: I2S DATA (2ch) *F, S, C and B before pin
numbers mean FL/FRch, SL/SRch, C/SWch
and SBL/SBRch, respectively.
: I2S DATA (Compressed (includes dts HD
High Resolution Audio, dts HD LBR, and
Dolby Digital Plus), (48K for HDMI)
: I2S LRCK, MBCK
CN401
CN301
JA351
3
1
10
CN901
CN501
(KU model only)
XM
IN
19
17
CN301
CN302
1
7
5
2
4
CN801
HDMI IN
CN901,
CN951
CN953
9
F(FL) 17
B(SR) 14
S(SW) 15
C(C) 16
(SL 9)
21
(FR) 18,19
13
4,5
11
L
R
: I2S or DSD DATA (Signal from HDMI. When
it is “dts HD Master Audio”, “Dolby True HD”,
“SACD”, “LPCM Multi” or “PCM or LPCM at
or above 88.2kHz”)
DSP Block Diagram
• Signal Block
Analog 8ch OUT
Control in
Control out
CN401
5
7
FR
FL
9
SR
11
SL
13
SW
15
C
C
17
SBR
19
SBL
FR
FL
SR
SL
SW
SBR
SBL
9
11
28
24
3 9 10 11
7 6 5 4
25
21
22
19
20
17
18
1
25
30
46
73
69
45
22
2
11
2
11
4
9
22
15
3
10
3
10
37
28
26
43
42,44
6,13
6,13
39,41
18,19
7,12
60,62,
76,78
H14,J14
B4
4
P14
F14
9
7,12
5,14
H13,G14
5,14
3
1
2,4
10,12
24,26
77,79
2,4
24,26
1,3,5,
7,48
SW
IC601
74VHC157
XMDT
IC501
F2621E-01
DAC
IC451
AK4387ET
SW
IC651
74VHC157
FLASH ROM
IC106
AYW7167
SRAM
IC107
4Mbit
(8bit
×
512kW)
SRAM
IC110
4Mbit
(8bit
×
512kW)
(stby)
X551
24.576MHz
IC551
IC551
IC552
F S C B
1 80 58 59
P10 P11 P12 P13
F S C B
L14 M13 M14
B(SR)
F(FR)
F(FL)
S(SW)
C(C)
K14
(SL)
F S C B
F S C B
IC751
Lip sync
ML87V5002
29 28 27 26
2
5 8 12 15
F S C B
F S C B
DSP ASSY
G
• : For AWX8813 only
(for North American specifications)
• : Standy-by parts, stand-by path
• : Channel allocation for SACD
1
2
R
L
( )
(Supplement) Differences in channel allocation for SACD signal and other signals
CN801
Pin No.
SACD signal
Other signals
Pin No.
SACD signal
Other signals
9
Data(SL)
-
14
15
16
17
18
Data(SR)
Data(SW)
Data(C)
Data(FL)
Data(FR)
Data(SBL,SBR)
Data(SL,SR)
Data(C,SW)
Data(FL,FR)
LR clock
IC101
H13
K14
L14
M13
M14
P14
Data(FR)
Data(SL)
Data(SR)
Data(SW)
Data(C)
Data(FL)
LR clock
-
Data(SBL,SBR)
Data(SL,SR)
Data(C,SW)
Data(FL,FR)
XM Analog
2ch OUT
CN401
(stby)
22
21
L
R
11
10
L
R
SERIAL
ROM
IC261
(stby)
30,31
3,4
IC701
Lip sync
ML87V5002
29 28 27 26
2
5 8 12 15
F S C B
F S C B
30,31
3,4