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9.1. Main Block
IC601 : YESAM377
Pin
No.
Port
Description
I/O
(V)
FM AM TAPE CD
1 BATT DET
Battery voltage
detection
detection
I
2.1 2.1
2.1
2.1
2 (NC)
-
-
-
-
-
-
3 SCL
Audio control serial
clock
clock
O
4.8 4.8
4.8
4.8
4 SDA
Audio control data
O
4.8 4.8
4.8
4.8
5 DSP DATA
DSP control data
O
4.8 4.8
4.8
4.8
6 DSP CLK
DSP data clock
O
0
0
0
0
7 DSP LATCH DSP IC latch
O
0
0
0
0
8 (NC)
-
-
-
-
-
-
9 (NC)
-
-
-
-
-
-
10 RESET
Reset
I
4.8 4.8
4.8
4.8
11 XT2
Crystal oscillator
-
2.6 2.6
2.6
2.6
12 XT1
Crystal oscillator
-
2.1 2.1
2.1
2.1
13 FLMD0 (NC)
-
-
-
-
-
-
14 X2
Crystal oscillator
-
2.6 2.6
2.6
2.6
15 X1
Crystal oscillator
-
2.3 2.3
2.3
2.3
16 REGC
(Regulator capacitor)
-
2.5 2.5
2.5
2.5
17 VSS
Ground
-
0
0
0
0
18 EVSS
Ground
-
0
0
0
0
19 VDD
+5V power supply
-
4.8 4.8
4.8
4.8
20 EVDD
+5V power supply
-
4.8 4.8
4.8
4.8
21 (NC)
-
-
-
-
-
-
22 (NC)
-
-
-
-
-
-
23 (NC)
-
-
-
-
-
-
24 (NC)
-
-
-
-
-
-
25 AF MUTE
AF mute control
O
4.8 4.8
4.8
4.8
26 AMP CNT
Amp power control
O
4.8 4.8
4.8
4.8
27 ANT CNT
Antenna power
control
control
O
4.8 4.8
0
0
28 EXT.MUTE
External mute
O
4.8 4.8
4.8
4.8
29 STBY
Power IC stundby
control
control
O
4.8 4.8
4.8
4.8
30 AMP MUTE Amp mute control
O
4.8 4.8
4.8
4.8
31 MODE 3
Tape mode switch
signal 3
signal 3
I
4.8 4.8
4.8
4.8
32 MODE 1
Tape mode switch
signal 1
signal 1
I
4.8 4.8
0
4.8
33 MODE 2
Tape mode switch
signal 2
signal 2
I
0
0
4.8
0
34 SMT R
Tape sub motor (R)
signal
signal
O
4.8 4.8
4.8
4.8
35 F REEL
Tape reel pulse (F)
I
0
0
0
0
36 MMT F
Tape main motor (F)
signal
signal
O
0
0
4.6
0
37 R REEL
Tape reel pulse (R)
I
0
0
0
4.8
38 SMT F
Tape sub motor (F)
signal
signal
O
4.8 4.8
4.8
4.8
39 MS
Tape music sensor
signal
signal
I
4.8 4.8
4.8
4.8
40 MTL
Tape equalizer
control
control
O
0
0
0
0
41 DOLBY
Tape noise reduction
control
control
O
0
0
0
0
42 MS GAIN
Tape music sensor
level
level
I
0
0
4.8
0
43 T IN
Tape cassette IN
detect
detect
I
0
0
0
0
44 F/R
Tape head F/R select
O
0
0
4.8
0
45 A SW 1
Analog switch seslect
1
1
O
4.8 4.8
0
0
46 A SW 2
Analog switch seslect
2
2
O
4.8 4.8
0
0
Pin
No.
Port
Description
I/O
(V)
FM AM TAPE CD
47 CD MUTE
CD mute
I
0
0
0
4.8
48 CD SW2
CD mechanism SW2
I
4.8 4.8
4.8
4.8
49 CD SW1
CD mechanism SW1
I
4.8 4.8
4.8
4.8
50 CD RESET
CD reset
O
4.8 4.8
4.8
4.8
51 CD STB
CD strobe
I
4.8 4.8
4.8
3.6
52 CD SI
CD data input
O
0
0
0
0
53 CD SO
CD data output
I
0
0
0
1
54 CD SCK
CD clock
O
4.7 4.7
4.7
4.7
55 PLL DO
PLL data
I
4.8 4.8
4.8
4.8
56 PLL CLK
PLL data clock
O
4.8 4.8
4.8
4.8
57 PLL DI
PLL data
O
0
0
0
0
58 PLL CE
PLL chip select
O
0
0
0
0
59 AVREF
(Conecting to +5V)
-
4.8 4.8
4.8
4.8
60 AVSS
Ground
-
0
0
0
0
61 ACC
ACC detection
I
5
5
5
5
62 INI A
Initial setting
I
0
0
0
0
63 LEVEL
Audio level meter
signal
signal
I
0
0
0
0
64 VSM
Radio signal strength
I
0
0
0
0
65 (NC)
-
-
-
-
-
-
66 (NC)
-
-
-
-
-
-
67 (NC)
-
-
-
-
-
-
68 ST
Radio station detect
I
4.8 4.8
4.8
4.8
69 MAIN CNT
Main power control
O
4.8 4.8
4.8
4.8
70 LCD CLK
LCD data clock
O
4.7 4.7
4.7
4.7
71 LCD DO
LCD data
I
4.8 4.8
4.8
4.8
72 LCD DI
LCD data
O
4.7 4.7
4.7
4.7
73 LCD CE
LCD chip enable
O
0
0
0
0
74 (NC)
-
-
-
-
-
-
75 (NC)
-
-
-
-
-
-
76 (NC)
-
-
-
-
-
-
77 (NC)
-
-
-
-
-
-
78 (NC)
-
-
-
-
-
-
79 ROTARY 1
Rotary encoder input
1
1
I
4.7 4.7
4.7
4.7
80 ROTARY 2
Rotary encoder input
2
2
I
4.7 4.7
4.7
4.7
9.2. Display Block
IC901 : C0HBA0000195
Pin No.
Port
Description
I/O
(V)
1
LED
CHANGE
CHANGE
LED selection signal
O
0
2
LED ON/OFF LED ON/OFF signal
O
4.7
3
SOURCE
GREEN
GREEN
LED (Source Green) drive
O
4.7
4
SOURCE
AMBER
AMBER
LED (Source Amber) drive
O
0
5-39
SEG5-39
LCD segment data
O
2.4
40-43
COM1-4
LCD common
O
2.4
44,45
SEG40,41
LCD segment data
O
2.4
46-49
KS3-6
Key scan
O
4.7
50-54
Kl1-5
Key data
I
0
55
TEST
(Connecting to ground)
-
0
56
VDD
+5V power supply
-
4.7
57
VDD1
VDD1 filter terminal
-
3.1
58
VDD2
VDD2 filter terminal
-
1.6
59
VSS
Ground
-
0
60
OSC
Oscillator terminal
-
3.7
61
DO
Key data output
O
4.7
62
CE
LCD driver chip enable
I
0
63
CLK
LCD clock
I
4.7
64
DI
LCD data
I
4.7
9 TERMINALS DESCRIPTION
5
CQ-CK2303W
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