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MZ-R37
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6-3. BLOCK DIAGRAM — AUDIO SECTION —
AUDIO
I/F
CONTROL
ADC
DAC
RCH
RCH
CDTI
CDTO
CCLK
KCS
PD
4
2
3
5
1
46
15 14 13 12 47
29
25
26
44
A/D, D/A
CONVERTER
IC301
41
7 5
8
MIC AMP
IC302
2
REG
IC304
17
16
21
23
LINE/HP AMP
IC303
9
4
6
3
5
MIC2.5V 2.8V
R-CH
R-CH
R-CH
MUTE VCOM
81
93
94
66
67
68
24
11
49
RVCC
(+2.8V)
SYSTEM
CONTROL
SECTION
B
KEYRMC
OPT CONT
AMUTE
BEEP
XJACK DET
OPT DET
XMIC DET
XLINE DET
XCSNV
SDO2
SDI2
SCK 2
XCS ADA
XPD ADA
DTCK
KEY RMC
90
89
7
5
6
96
SYSTEM CONTROL
IC801 (2/3)
1
3
4
2
CS
DO
DI
SCK
EEPROM
IC803
SDTO
DIN
LRCK
BCK
SDTI
MCLK
XRST
SERVO
SECTION
A
/REMOTE
J304
LINE OUT
J302
MIC
(PLUG IN POWER)
J303
LINE IN
(OPTICAL)
J301
OPT
CONTROL
Q302
2.8V
Signal path
: PLAY(DIGITAL)
: REC(DIGITAL)
: PLAY(ANALOG)
: REC(ANALOG)
04
R-ch : same as L-ch.
MIC 2.5V
XCE
INOUT
DTCK
KEY R
6-4. BLOCK DIAGRAM — SYSTEM CONTROL SECTION —
LCD
MODULE
WITH
SWITCH
UNIT
POWER
SWITCH
Q801(1/2)
VCC
(+2.8V)
WP
XTAL
SYNC REC
X801
12MHz
S804
SYNCHRO
REC
S805
Digital
MEGA BASS
OFF
ON
S803
T. MARK
S802
(OPEN 2)
S801
(OPEN 1)
65
45
44
43
42 91
57
56
21
36
LCD RESET
LCD SCK
LCD DATA
LCD XC D
LCD STB KEY ON
38
MRST
17
SLEEP
37
INMU0
16
NI MH CHG
95
FFCLR
13
WP
KEY 1
KEY 2
HOLD
XLCD
41
EXTAL
40
22
23
DBB
18
T.MARK
54
TEMP
SYSTEM CONTROL
IC801 (3/3)
KEYRMC
AUDIO
SECTION
B
24
6
25 67
68
KEY ON
XRST
72
SLEEP
23
INMU
10
CHG
70
FFCLR
69
WAKEO
71
WAKE
52
RS
51
CHG SW
REMKEY VC
14
VLG2
47
VLG20
48
VLG20
32
VB
33
VB
37
VL
38
VL1
39
VB
40
VB
49
L4
61
VDD
54
INM4
55
RF4
57
DC IN
FS4
POWER CONTROL
IC901
FS4
+2.8V
+2.8V
VDD
(+2.9V)
SERVO
SECTION
C
IC971
DC-DC CONVERTER
2 1
5
IC972
REG
1 3
D905
Q971
Q903
Q906
UNREG
RECHARGEABLE
BATTERY
(NC-AA)
700mAh 2.4V
Q851
46
CHG MNT
60
BAT VC
48
HIDC MNT
Q801
(2/2)
25
INMU1
Q901
Q902
4 1
IC951
D901
D902
D906
T901
J901
DC IN 4.5V
(CHASSIS)(CHASSIS)
TEMP
METER
IC802
14
OPEN
55
KEY3
41
VCC
(+2.8V)
VDD
(+2.9V)
S881
DISPLAY
S882
MODE
D801
WP
Q821
04
VOUT VIN
EXT
VCE VOUT
¥
(Page 26)
(Page 29)
(Page 27)
(Page 26)