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 215192 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
SDI0SDO0SCK0
SI0
XBCKXCS NVLRCKXCS ADAXPD ADAOSCIOSCOFS256AOUTLAOUTRXOPT CTLOPT DETXJAC DETMUTEXHP STBY
RMC DTCK
VREF IN
OUTB BEEP
OUT R
OUTA BEEP
OUTL
XMIC DETBEEPMUTESTBYBEEP
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
DODISKXCS
EEPROM
IC804
MAIN BOARD (2/3)AUDIO SECTION
203 204
Signal path
: PLAYBACK
: REC(ANALOG IN)
: REC(DIGITAL IN)
(Page 35)
(Page 37)
(Page 37)
(Page 37)
(Page 37)