Schematic Diagram - Digital Audio Wave Form Section - Onkyo TX-SA605 Service Manual

A
SCHEMATIC DIAGRAM-13(SD-13)
DIGITAL AUDIO WAVE FORM SECTION
NOTE:
1. WF01 is short for WaveForm01 .
1
2. Refer to SD-5 & 6(SCHEMATIC DIAGRAM-5 & 6)
for details.
74HCU04F
Q131
COAX1
1 4
R336
COAX2
13 10
R337
IN
R141
OPT1
VCC
WF01
2
GND
IN
R142
OPT2
VCC
GND
OPT1
WF01
3
Duty varies according to audio data
WF04
SAI_LRCK
20.8us
4
WF07
CX_LRCK
20.8us
WF10 AUDIO_FL
5
Analog audio wave form with aliasing noise
B
TO NADG-9189 (SD-5)
P801A
WF02
WF03
COAX1 43
DIR
14
COAX2 42
54 DIR_SDOUT
13
R312 11
61 DIR_BCK
10
R316 5
60 DIR_LRCK
6
R315
OPT1 46 Q181
WF04 WF05
TC74VHC157FT
OPT2
47
Q301 CS42518-CQ
LR CLOCK (SAI_LRCK, CX_LRCK)
Fs=48kHz : DVD, Clock width=20.8us
Fs=44.1kHz : CD, Clock width=22.7us
WF02
4.0V
Duty always varies according to audio data
WF05
3.3V
WF08
CX_SCLK
3.3V
WF10 AUDIO_FL
2.8V
0V
Aliasing noise in no audio data
TMS320D708
WF06
Q201
DSP
CX_SDIN1
113
138
R254
CX_SDIN2
137
115
R255
135
CX_SDIN3
116
R256
CX_SDIN4
SAI_SDOUT 117
12
120
R257
SAI_SCLK CX_SCLK
9
139 142
R267
SAI_LRCK
CX_LRCK
7
141
144
R269
WF07
WF08
MASTER CLOCK=128Fs or 256Fs
BIT CLOCK (SAI_SLCK, CX_SLCK)
64Fs=3072kHz : DVD, Clock width=325ns
64Fs=2822.4kHz : CD, Clock width=354ns
COAX1
5.0V
SAI_SLCK
3.3V
325 ns
3.3V
325 ns
220mVp-p
TX-SR605/SA605/SA8560
C
WF09
FL- R411
FL+
R401
R412
FR-
1 FR+
DAC 33
32 R402
64
30
R413
63 C-
31
37
62
R403
C+
36
29
28
2
R415
SL-
26
27
R405
SL+
3
23
22
20
SR-
R416
21
34
SR+ R406
35
SBL- R417
R407
SBL+
SBR- R418
R408
SBR+
R414
SW-
SW+ R404
WF03 SAI_SDOUT
3.3V
Duty varies according to audio data
WF06
CX_SDIN1
3.3V
20.8us
WF09
DAC_OUT-
2.8V
0V
Analog audio wave form with aliasing noise
D
FL
WF10
Q401
AUDIO_FL
FR
Q401
C
Q402
SL
Q403
SR
Q403
SBL
Q404
SBR
Q404
SW
Q402