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MDX-CA680/CA680X
2525
12
9
5
DATADADT
VOUTL
VOUTR
DADT,
BCK,
LRCK,
FS256
6
BCKBCK
LRCK
R-CH
R-CH
1
XTI
15
17 16
RSTB
DM1
DM0
LRCK
FS256
DEEMP
AM
MPX
DATA, CLOCK
S-METER
30
29
1
11
20
3
SEL
FD1L+
AM
12
AMIF
13
MPX
DATA
CLOCK
R-CH
A
B
F
CLK
CONTROL
SOFT
MUTE
TONE
CONTROL
LOUDNESS/
VOLUME
INPUT SELECT,
ELECTRICAL VOLUME, FM MPX
IC401
PILOT
CANCELATION
DIGITAL
CONTROL
L.P.F.
PLL
BUS
AUDIO IN
PJ401 (1/2)
AUDIO OUT
FRONT
AUDIO OUT
REAR
PJ401 (2/2)
IIC BUS
SDA
SCL
SM
PILOT
DET
+STEREO ADJUST
+STEREO BLEND
L.P.F. S & H HIGH-CUT
D/A
CONVERTER
MUTING
Q461
E
MD-ATT
MODE
CONTROL
ROTARY
ENCODER
RE901
D665
J561
REMOTE IN
U-COM +5V
S701
(NOSE DETECT)
OSC
LCD DRIVER
IC900
LCD901
LIQUID CRYSTAL DISPLAY
LCD-DATA
LCD-CLK
LCD-CE
C953, R957
LSW901 – 911,
LSW914 – 919,
S902 – 907
DIGITAL FILTER,
D/A CONVERTER
IC101
INPUT
INTERFACE
DIGITAL
FILTER
NOISE
SHAPER
D/A
COMVERTER
4
DEMODULATOR
21
45 47
18
LEVEL
14
70
MUTING
Q451
MUTING
Q441
MUTING
Q431
7677
BATTERY OFF
MUTE DRIVER
Q479
BACK-UP B+
D479
D502
X501
18.432MHz
X502
32.768kHz
MD-RST
MD-RST,
DEEMP
I
H
INPUT
MULTIPLEXER
LOUDNESSMUTE
MONO
FADER
MIXER
OUTLF
OUTLR
R-CH
OUTPUT
SELECTOR
AM/FM
NOISE
BLANKER
R-CH
FL-IN
FL+
1
CN601 (1/2)
POWER AMP
IC611
FRONT L+
FR-IN
RL-IN
RR-IN
AUX IN
16
15
11
14
12
22
4
FL–
9
FRONT L–
FR+
4
FRONT R+
FR–
12
FRONT R–
RL+
2
REAR L+
RL–
10
REAR L–
RR+
3
REAR R+
RR–
11
15
13
REAR R–
MUTE
TEST
TEL-ATT
STNBY
BEEP
AMPATT
AMPON
5
3
21
9
7
17
19
23
RCIN1
KEYIN0
KEYIN1
IIC SIO
IIC CKO
RE IN0
RE IN1
KEYACK
LCDSO
LCDCKO
LCDCE
OSCOUT
OSCIN
XOUT
XIN
ATT
TELATT
RCIN0
35
66
67
6
5 4
97 96 26 3498 691516131219201891 40 37
XKEYON
NOSESW
TEST IN
VOLATT
(VOLUME CONTROL)
OSC
78
74
1
–
64
SEG03
–
SEG66 COM1
–
COM4
65
–
68
MUTING
CONTROL
Q478
LEVEL SHIFT
Q651
D
KEY ACTIVE
SWITCH
Q664
SYSTEM CONTROLLER
IC501 (2/3)
: MD PLAY
: FM
: MW/LW
: BUS AUDIO IN
• SIGNAL PATH
L
R
L
R
• R-ch is omitted due to same as L-ch.
CN701
MAIN UNIT SIDE
9
1
CN901
FRONT PANEL SIDE
94
DOORSW
MPIN
15
C
EJKT
AMBER
GREEN
80
79
MULTIPATH
DETECTOR
R
L
LED900 – 903, 905, 906,
LED909, 910, 913, 914,
LSW901 – 911, 914 – 919
COLOR
SELECT
Q901, 902
(MDX-CA680)
4-3. BLOCK DIAGRAM – MAIN Section –
(Page 23)
(Page 23)
(Page 24)
(Page 24)
(Page 24)
(Page 24)
(Page 23)
(Page 23)