DEH-4090MP/XN/ID
18
1
2
3
4
1
2
3
4
C
D
F
A
B
E
No. Symbol
I/O Explain
1 AMANT
I
AM antenna input
AM antenna input high impedance AMANT pin is connected with
an all antenna by way of 4.7 µH. (LAU type inductor)
A series circuit
including an inductor and a resistor is connected with RF ground for
the countermeasure against the hum of power transmission line.
2 RFGND
RF ground
Ground of antenna block
3 FMANT
I
FM antenna input
Input of FM antenna 75
Surge absorber
(DSP-201M-S00B)
is necessary.
4 VCC
power supply
The power supply for analog block. D.C 8.4 V ± 0.3 V
5 SL
O
signal level
Output of FM/AM signals level
6 CE2
I
chip enable-2
Chip enable for EEPROM ”Low” active
7 NC
non connection
Not used
8 CE1
I
chip enable-1
Chip enable for AF•RF ”High” active
9 CK
I
clock
Clock
10 DI
I
data in
Data input
11 NC
non connection
Not used
12 OSCGND
osc ground
Ground of oscillator block
Power supply for EEPROM pin 13 is connected with a power supply of
micro computer.
Data output
Ground of digital block
Not used
The power supply for digital block. 3.3 V ± 0.2 V
Not used
Not used
Not used
Not used
Ground of audio block
FM stereo “L-ch” signal output or AM audio output
24 R ch
O
R channel output
FM stereo “R-ch” signal output or AM audio output
FMRF
ANT adj
RF adj
FM ANT
T51
CF52
RFGND
OSCGND
DGND
A
U
DIOGND
NC
VCC
VDD_3.
3
3.3 V
2.5 V
IC 4
3.3 V
2.5 V
IC 2
2.5 V
NC
CE2
R
O
M_VDD
SL
DI
CK
CE1
NC
DO
NC
NC
NC
NC
7 6
13
5
10 9 8
11
14
18 19
20 21
1
3
2
12
15
22
16
4
17
IC 1
3.3 V
AM ANT
FMRF
AT T
LPF
OSC
IC 3 EEPROM
5.0 V
IC 5
5 V
3.3 V
AT T
MIXER, IF AM P
DET, FM MPX
24
23
Rch
Lch
-
FM/AM Tuner Unit
t
t
www. xiaoyu163. com
QQ 376315150
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TEL 13942296513
9
9
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
