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ICF-M410L
4-4. IC PIN FUNCTION DESCRIPTION
• IC101 uPD17072GB-565-1A7(DIGITAL TUNING SYSTEM CONTROL)
Pin No.
Pin Name
I/O
1
VOUT
O
For pull-up of INITIAL, L:CE = at L
2
POWER
O
Radio power control signal output.
3
MUTING
O
Muting signal output.
4
BAND(MW/SW)
O
"Band select signal output. L:MW, H:LW/SW"
5
BAND(FM/AM)
O
"Band select signal output. L:FM/TV, H:AM"
6
KEY SCAN0
O
Key source signal output.
7
KEY SCAN1
O
Key source signal output.
8
KEY SCAN2
O
Key source signal output.
9
KEY SCAN3
O
Key source signal output.
10
KEY RET0
I
Key return signal input.
11
KEY RET1
I
Key return signal input.
12
KEY RET2
I
Key return signal input.
13
KEY RET3
I
Key return signal input.
14
NC
—
Not used.
15
NC
—
Not used.
16
NC
—
Not used.
17
NC
—
Not used.
18
GND
—
Ground.
19
EO
O
Error signal output.
20
VCOL
I
AM VCO (local oscillation) frequency input.
21
VCOH
I
FM VCO (local oscillation) frequency input.
22
REG 0
O
Regulater for PLL output.
23
VDD
—
Power supply (+3V).
24
X OUT
O
Pin for connecting crystal resonator for system clock.
25
X IN
I
Pin for connecting crystal resonator for system clock.
26
REG 1
O
Regulater for PLL output.
27
REG LCD0
O
LCD drive voltage output.
28
CAP LCD0
—
Pin for capacitor connection for LCD drive voltage.
29
CAP LCD1
—
Pin for capacitor connection for LCD drive voltage.
30
REG LCD1
O
LCD drive voltage output.
31
COM 0
O
LCD common signal output.
32
COM 1
O
LCD common signal output.
33
COM 2
O
LCD common signal output.
34
COM 3
O
LCD common signal output.
35-49
LCD 0 - 14
O
LCD segment signal output.
50
CE
I
Chip select emable input.
51
INT
I
Hold input. L:ON
52
BEEP
O
BEEP signal output.
53
BAT LOW
I
Low voltage detect signal input.
54
NC
—
Not used.
55
INITIAL
I
Connected to L.
56
NC
—
Not used.
Description
10
4-5. IC BLOCK DIAGRAM
IC1 CXA1019S
30
29 28 27 26
AF POWER AMP
1
2
3
4
5
10
25
24
23
22
21
20
19
18 17 16
AM IF DET AGC
TUNING
METER
AM FE
FM IF
FM
DISCRIMINATOR
FM FE
6
7
8
9
10
11
12
13
14
15
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