Pioneer DEH-P7000UB Service Manual page 18

1
- FM/AM Tuner Unit
A
AM ANT
FMRF
1
ATT
FM ANT
B
3
ATT
FMRF
RF adj
ANT adj
C
No. Symbol I/O Explain
1 AMANT I
2 RFGND
3 FMANT I
4 VCC
5 SL O signal level
6 CE2 I
7 NC
8 CE1 I
D
9 CK I
10 DI I
11 LDET O lock detector
12 OSCGND
13 ROM_VDD
14 DO O data out
15 DGND
16 NC
17 VDD_3.3
18 RDS_CK O RDS clock
E
19 RDS_DATA O RDS data
20 RDS_LOCK O RDS lock
21 RDS_HSLK O RDS high speed
22 AUDIOGND
23 L ch O L channel output
24 R ch O R channel output
F
16
1
2
7 6 13
IC 3 EEPROM
5.0V
OSC LPF
IC 1
3.3V
MIXER, IF AM P
T51
CF52
2 12 15 22 16 4
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.
RF ground Ground of antenna block
FM antenna input Input of FM antenna 75
power supply The power supply for analog block. D.C 8.4 V ± 0.3 V
Output of FM/AM signals level
chip enable-2 Chip enable for EEPROM "Low" active input
non connection Not used
chip enable-1 Chip enable for AF•RF "High" activev input
clock Clock input
data in Data input
"Low" active output
osc ground Ground of oscillator block
power supply Power supply for EEPROM pin 13 is connected with a power supply of
micro computer.
Data output
digital ground Ground of digital block
non connection Not used
power supply The power supply for digital block. 3.3 V ± 0.2 V
Output of RDS clock(2.5 V)
Output of RDS data(2.5 V)
Output unit "High" active(2.5 V) (RDS_LOCK turns over by the
external transistor . "Low" active)
Output unit "High" active(2.5 V)(RDS_HSLK turns over by the
lock external transistor. "Low" active)
audio ground Ground of audio block
FM stereo "L-ch" signal output or AM audio output
FM stereo "R-ch" signal output or AM audio output
DEH-P7000UB/XN/EW5
2
3
5 10 9 8 11 14 18 19 20 21
IC 5
5V t 3.3V
IC 4
t
3.3V 2.5V
3.3V 2.5V
17
Surge absorber
3
4
Rch
24
IC 2
2.5V
Lch
23
DET, FM MPX,
RDS DECODER
is necessary.
(DSP-201M-S00B)
4