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MZ-G750/R700
3636
6-3. BLOCK DIAGRAM — AUDIO SECTION —
9
1
3
2
1
14
3
12
71
AUDIO
I/F
CONTROLLER
AUDIO
I/F
CONTROLLER
CLOCK
DIVIDER
OPT CONTROL
SWITCH
Q302
A/D
CONVERTER
&
HPF
IP
GAIN
AMP
29 30 215 192 191 193 183 218 240
142
22
21
15
2
4
24
23
13
11
69
234 1
219 24 25
70
17 18
MUTING
BEEP
BIAS
STANDBY
REFERENCE
VOLTAGE
SWITCHING
Q301
10
179
180
181
9
SYSTEM
CONTROL
/POWER
SECTION
RMC KEY
6
SYSTEM
CONTROL
/POWER
SECTION
3
SYSTEM
CONTROL
/POWER
SECTION
X MIC DET
4
SYSTEM
CONTROL
/POWER
SECTION
VC B+
5
SERVO
SECTION
ADDT
DIN1
1
OPTICAL
RECEIVER
J301
LINE IN
(OPTICAL)
J303
MIC
(PLUG IN POWER)
(LINE IN JACK)
J302
F801
i
RVDD
DTCK
KEY-R
RGND
X801
45.1584MHz
SDI0
SDO0
SCK0
SDI0
SDO0
SCK0
SI0
XBCK
XCS NV
LRCK
XCS ADA
XPD ADA
OSCI
OSCO
FS256
AOUTL
AOUTR
XOPT CTL
OPT DET
XJAC DET
MUTE
XHP STBY
RMC DTCK
VREF IN
OUTB BEEP
OUT R
OUTA BEEP
OUTL
XMIC DET
BEEP
MUTE
STBY
BEEP
SO0
SCK0
SYSTEM CONTROLLER,
DIGITAL SIGNAL PROCESSOR
16M BIT D-RAM
IC801(2/3)
13
14
12
SDTO
BCLK
LRCK
15
CSN
16
PDN
CDTI
CCLK
SDO0
SCK0
SDO0
SCK0
MCLK
A/D CONVERTER
IC301
VIF B+
LIN2
LIN1
RIN2
RIN1
4
OUT1
OUT2
IN1
IN2
STBY
MIC AMP
IC303
INL
INR
HEADPHONE AMP
IC302
DO
DI
SK
XCS
EEPROM
IC804
MAIN BOARD (2/3)AUDIO SECTION
203 204
Signal path
: PLAYBACK
: REC(ANALOG IN)
: REC(DIGITAL IN)
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(Page 37)
(Page 37)
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