51
5
6
7
8
F
E
D
C
B
A
5
6
7
8
DEH-1550/XU/ES
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
µ
H. (LAU type inductor) A series circuit
including an inductor and a resistor is connected with RF ground for
the countermeasure against the ham of power transmission line.
2 RFGND
RF ground
Ground of antenna block
3 FMANT
I
FM antenna input
Input of FM antenna 75
Ω
Surge absorber
(DSP-201M-S00B)
is necessary.
4 VCC
power supply
The power supply for analog block. D.C 8.4V
±
0.3V
5 SL
O
signal level
Output of FM/AM signals level
6 CE2
I
chip enable-2
Chip enable for EEPROM ”Low” active
7 WC
I
write control
You can write EEPROM, when EEPROM write control is “Low”.
Ordinary non connection
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
13 ROM_VDD
power supply
Power supply for EEPROM pin 13 is connected with a power supply of
micro computer.
14 DO
O
data out
Data output
15 DGND
digital ground
Ground of digital block
16 NC
non connection
Not used
17 VDD_3.3
power supply
The power supply for digital block. 3.3V
±
0.2V
18 NC
non connection
Not used
19 NC
non connection
Not used
20 NC
non connection
Not used
21 NC
non connection
Not used
22 AUDIOGND
audio ground
Ground of audio block
23 L ch
O
L channel output
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
CF51
RFGND
OSCGND
DGND
AUDIOGND
NC
VCC
VDD_3.3
3.3V
2.5V
IC 4
3.3V
2.5V
←
IC 2
2.5V
WC
CE2
ROM_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
3.3V
AM ANT
FMRF
ATT
LPF
OSC
IC 3 EEPROM
5.0V
IC 5
5V
3.3V
←
ATT
MIXER, IF AMP
DET, FM MPX
24
23
Rch
Lch
-
FM/AM Tuner Unit
Summary of Contents for DEH-1550 XU
Page 4: ...1 SPECIFICATIONS 4 1 2 3 4 1 2 3 4 F E D C B A DEH 1550 XU ES ...
Page 6: ...6 1 2 3 4 1 2 3 4 F E D C B A DEH 1550 XU ES 2 2 EXTERIOR ...
Page 8: ...8 1 2 3 4 1 2 3 4 F E D C B A DEH 1550 XU ES C 2 3 CD MECHANISM MODULE ...
Page 14: ...14 a C CN701 FM AM TUNER UNIT 1 2 3 4 1 2 3 4 F E D C B A DEH 1550 XU ES ...
Page 15: ...15 A a A b A a A a B CN1801 5 6 7 8 F E D C B A 5 6 7 8 DEH 1550 XU ES ...
Page 18: ...18 1 2 3 4 1 2 3 4 F E D C B A DEH 1550 XU ES 3 3 KEYBOARD UNIT B ...
Page 25: ...5 6 7 8 F E D C B A 5 6 7 8 DEH 1550 XU ES 25 A SIDE A FRONT ANTENNA FM AM TUNER UNIT ...
Page 26: ...26 A A TUNER AMP UNIT 1 2 3 4 1 2 3 4 F E D C B A DEH 1550 XU ES ...
Page 27: ...A SIDE B 5 6 7 8 F E D C B A 5 6 7 8 DEH 1550 XU ES 27 ...
Page 29: ...5 6 7 8 F E D C B A 5 6 7 8 DEH 1550 XU ES 29 ...
Page 55: ...55 5 6 7 8 F E D C B A 5 6 7 8 DEH 1550 XU ES 8 OPERATIONS ...
Page 56: ...56 1 2 3 4 1 2 3 4 F E D C B A DEH 1550 XU ES 56 ...
Page 57: ...57 5 6 7 8 F E D C B A 5 6 7 8 DEH 1550 XU ES ...
