Sony ICD-B5 Service Manual ▷ View online
6
ICD-B5
3-1. IC PIN DESCRIPTION
• IC703 µPD780308GC-A58-8EU (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1 to 3
KEY1 to 3
I
Key input
4
XHOLD
I
Hold switch input
5
AMPPOW
O
Power down control output for power amplifier IC (IC103).
6
AVREFON
O
A/D reference voltage input
7
XFMCE
O
Chip enable output for flash memory IC (IC701).
8
VDD0
—
Power supply pin
9
AVREF
—
A/D reference voltage
10
XFMWE
O
Write enable signal output for flash memory IC (IC701).
11
XFMALE
O
ALE signal output
12
VSS1
—
Ground
13
XFMR/B
I
Ready/Busy signal input from flash memory IC (IC701).
14
XFMCLE
O
CLE signal output for flash memory IC (IC701).
15, 16
NC
O
Not used. (Open)
17
XFMRE
O
Read enable signal output for flash memory IC (IC701).
18
XFMSE
O
SE signal output for flash memory IC (IC701).
19
XFMWP
O
WP signal output for flash memory IC (IC701).
20
CLKOUT
O
Not used. (Open)
21
BEEP
O
Beep signal output (2.4 kHz)
22
LIGHT
O
LCD back light control output
23 to 26
COM0 to 3
O
LCD common signal output
27
BIAS
O
Connect to VDD. (LCD bias)
28 to 30
VLC0 to 2
—
LCD drive power supply pin
31
VSS0
—
Ground
32 to 61
S0 to 29
O
LCD segment signal output
62
MGHIGH
I
Mic gain mode input (High: high mode)
63
MGTEST
O
Mic gain mode test output
64
XTEST
I
Test pin
65
DSPPOW
O
Digital signal processor registor control I/F enable signal output
66
LEDREC
O
OPR (REC) LED (D701: red) ON/OFF output
67
LEDPB
O
OPR (PLAY) LED (D701: green) ON/OFF output
68
RTCCE
O
Real time clock chip enable signal output
69
XDSPIFRQ
O
I/F request signal output for DSP IC (IC101).
70
DSPIFRW
O
I/F data read/write signal output for DSP IC (IC101).
71
XDSPRST
O
Reset signal output for A/D, D/A converter, DSP IC (IC101).
72
SI0
I
I/F data signal input for DSP IC (IC101).
73
SO0
O
I/F data signal output for DSP IC (IC101).
74
SCK0
O
I/F signal clock output for DSP IC (IC101).
75
RTCDI
I
Real time clock data input
76
RTCDO
O
Real time clock data and digital signal processor registor control data output
77
RTCCLK
O
Real time clock I/F data and digital signal processor registor control clock output
78
IC
—
Ground
79
X2
O
System clock output (5 MHz)
80
X1
—
System clock input (5 MHz)
81
VDD1
—
Power supply pin
82
XT1
—
Sub clock input (32.768 kHz)
83
XT2
—
Not used. (Open)
84
XRESET
I
Reset signal input
85
NC
—
Not used. (Open)
SECTION 3
DIAGRAMS
Ver 1.1
7
ICD-B5
Pin No.
Pin Name
I/O
Pin Description
86
WAKEUP
I
WAKE UP signal input
87
RTCINT
I
Real time clock (2 Hz) signal input
88
FLMPOW
O
Flash memory power ON/OFF output
89
DSPIFACK
I
I/F acknowledge signal input for DSP IC (IC101).
90
LMUTE
O
Line mute ON/OFF signal output
91 to 98
FM_100 to 107
I/O
Data bus signal input/output
99
AVSS
—
Ground
100
BATT
I
Power supply voltage detection input
ICD-B5
9
9
3-2. BLOCK DIAGRAM
47 MIP
46 MIN
LOUT0
23
EGPI011
EGPI014
EGPI013
EGPI015
BGPI02
EGPI014
RSTN
26
51
XOUT
52
34
XIN
25 27 58 24 54
72
SI0
90
21
5
76
75
77
77
68
87
82
9
8
65
88
84
80
1
67
66
79
LCD701
LIQUID
CRYSTAL
DISPLAY
PANEL
LED
DRIVER
Q701
18
17
7
14
11
10
19
64
86
1
2
3
4
41
42
43
2
3
4
5
91
I
98
73
SD0
74
SCK0
89
DSPIFACK
69
XDSPIFRQ
70
DSPIFRW
71
XDSPRST
18
I
21
•
24
I
27
23
I
26
32
I
61
RESET
IC702
MIC101
MIC
J101
MIC
J102
EAR
IC701
FLASH MEMORY
I/O0
I
I/O7
R/B
RE
CE
CLE
ALE
WE
WP
SL701
(TEST)
Q702
VDD
FMI00
I
FMI07
XFMSE
XFMRE
XFMCE
XFMCLE
XFMCLE
XFMALE
XFMWE
XFMWP
XFMWP
XTEST
WAKEUP
62 MGTEST
63 MGHIGH
KEY0
KEY1
KEY2
XHOLD
S703
HOLD
OFF ON
I/O
TIMER
COUNTER
CONTROL
CONTROL
OSC
INTERRUPT
CONTROL
RTCCE
RTCINT
RTCDI
RTCCLK
RTCDO
AMPPOW
BEEP
LMUTE
XT1
DSPPOW
FLMPOW
XRESET
X1
X2
LEDPB
LEDREC
COM0
I
COM3
S0
I
S29
SI
SO
SO
SCLK
CE
INTB
32KOUT
4
3
2
2
7
6
1
+3.3V
(VCC C)
D701
OPR
(GRN)(PLAY)
(RED)(REC)
A/D,D/A CONVERTER
DSP IC101
(PLUG IN POWER)
X101
4.02MHz
X701
5MHz
MEMORY
CONTROL,
SYSTEM
CONTROL
IC703
S706-708,713
S710-712,714
S704,705,709,715
KEY-IN
DETECT
Q703-705
VCC
+3.3V
(VCCB)
VCC
VCCA
+3.3V
(VCC A)
+3.3V
(VCC B)
RV101
VOL
4
8
5
1
3
2
-IN
+IN
BYPASS
VDD
VO1
VO2
SP101
SPEAKER
IC103
POWER AMP
X702
32.768kHz
REAL TIME CLOCK
IC704
VDD
+3.3V
(VCC C)
(VCC C)
+3.3V
(VCC A)
5
2
3
IC502
+3.3V REG
VOUT
VIN
OSCIN
OSCOUT
SHUTDOWN
DC-DC
CONVERTER
(3.7V)
+3.3V
(VCC B)
5
2
3
IC503
+3.3V REG
VOUT
VIN
CE
+3.3V
(VCC C)
5
2
3
IC504
+3.3V REG
VOUT
VIN
CE
IC505,Q501
VOLTAGE
DETECTOR
Q502
BUFFER
IC506
Q101
MUTE
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION LR03)
2PCS,3V
KEY MATRIX
Signal path
: PB
: REC
ICD-B5
10
10
3-3. SCHEMATIC DIAGRAM — MAIN SECTION — • Refer to page 14 for Common Note on Schematic Diagrams, Waveforms and IC Block Diagrams.
IC B/D
IC B/D
C116
R115
R114
R113
3LNOIS-TL
R111
C115
R110
R112
R741
SL701
TP745
R761
TP705
R704
R705
C701
C702
IC702
D701
R727
R726
R715
R719
R714
R755
R723
R724
C706
C705
C708
C707
D702
X702
TP706
TP703
TP704
TP707
R706
R707
R757
R729
R730
R731
R732
R733
R756
R760
C728
C712
C711
R758
R736
R734
R710
R702
TP101
TP110
R101
R102
C101
R103
R104
C103
C104
C105
C106
R105 C109
C110
R136
C114
MIC101
J101
TP108
TP102
IC506
C509
C508
R505
R504
R502
R503
C507
R501
IC505
D501
IC504
IC503
IC502
C127
R130
R131
R132
R133
R134
R129
R128
R127
R126
R125
AGP100
R124
R123
R121
R122
C126
C107
R116
C128
R135
C129
C131
C119 C120
FB102
FB101
R117
C121
R119
R120
C123
IC103
J102
FB103
TP106
FB104
TP105
TP104
C730
TP502
TP107
TP501
TP503
TP504
L501
TP506
TP505
TP507
C505
10V
TP508
C504
C510
C502
CN701
CN501
R746
R747
R743
R753
R744
R745
R742
S705
S704
S715
S709
S708
S707
S706
W704
W701
W702
W703
W706
S711
S712
S714
S710
S713
S703
R750
R749
R748
R752
R751
W711
W716
W712
W713
W714
TP747
TP744
TP749
TP748
TP741
TP743
TP742
TP751
TP752
TP754
TP753
TP746
RV101
IC101
C125
C132
100p
100p
SP101
R709
R725
R708
IC704
X101
X701
TP702
TP701
MGTEST
MGHIGH
IC703
A58-8EU
MEMORY CONTROL,SYSTEM CONTROL
C703
C704
TP708
R701
R703
IC701
C715
R713
R712
Q701
TP755
R508
R506
R507
Q703
Q704
Q705
Q702
R711
Q501
Q502
Q101
C714
LCD701
0
C124
Ver 1.1
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