Pioneer DEH-P660 Service Manual page 63

5
QQ
- FM/AM Tuner Unit
3 7 63 1515 0
AM ANT
1
ATT
FM ANT
3
ATT
No. Symbol
1 AMANT
TE
L 13942296513
2 RFGND
3 FMANT
4 VCC
5 SL
6 CE2
7 WC
8 CE1
9 CK
10 DI
11 NC
12 OSCGND
13 ROM_VDD
14 DO
15 DGND
16 NC
17 VDD_3.3
18 NC
19 NC
20 NC
21 NC
22 AUDIOGND
23 L ch
24 R ch
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IC 3 EEPROM
FMRF
FMRF
RF adj
ANT adj
2 12 15 22
I/O Explain
I AM antenna input
RF ground
I FM antenna input
power supply
O signal level
I chip enable-2
I write control
I chip enable-1
I clock
I data in
non connection
osc ground
power supply
O data out
digital ground
non connection
power supply
non connection
non connection
non connection
non connection
audio ground
O L channel output
O R channel output
x ao
y
i
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8
13 5 10 9 8 11
IC 5
5V 3.3V
5.0V
OSC LPF
IC 1
3.3V
MIXER, IF AMP
T51
CF52
CF51
IC 4
3.3V 2.5V
3.3V 2.5V
16 4 17
AM antenna input high impedance AMANT pin is connected with
an all antenna by way of 4.7µH. (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.
Q Q
3 6 7 1 3
Ground of antenna block
Input of FM antenna 75Ω Surge absorber
The power supply for analog block. D.C 8.4V ± 0.3V
Output of FM/AM signals level
Chip enable for EEPROM "Low" active
You can write EEPROM, when EEPROM write control is "Low".
Ordinary non connection
Chip enable for AF•RF "High" active
Clock
Data input
Not used
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. 3.3V ± 0.2V
Not used
Not used
Not used
Not used
Ground of audio block
FM stereo "L-ch" signal output or AM audio output
FM stereo "R-ch" signal output or AM audio output
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DEH-P660/XN/UC
6
7
2 9 9 4 2 8
14 18 19 20 21
IC 2
2.5V
DET, FM MPX
1 5 0 5 8 2 9 9 4
(DSP-201M-S00B)
m
co
7
8
9 9
A
Rch
24
Lch
23 B
C
2 8 9 9
is necessary.
D
E
F
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