Pioneer AVIC-D3/XU/EW5, Service Manual

Page: 291 / 306

AVIC-D3/XU/UC
291
5 6 7 8
5 6
7
8
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
µ
H. (LAU type inductor)A series circuit
the countermeasure against the hum of power transmission line. g
2 RFGND RF ground g Ground of antenna block
MANT I FM antenna input Input of FM antenna 75
Ω
Surge absorber g is necessary.
4 power supply
±
0.3 V
5 SL O signal level g
6 CE2 I chip enable-2 Chip enable for EEPROM ”Low” active
7 non connection Not used
8 I chip enable-1 Chip enable for AF•RF ”High g ” active
clock Clock
10 DI I data in Data input
11 NC non connection Not used
osc ground g 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 g g Ground of digital block g
non connection Not used
power supply The power supply for digital block. 3.3 V g
±
0.2 V
18 NC non connection Not used
19 NC non connection Not used
20 non connection Not used
non connection Not used
audio ground g
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 g
FMRF
ANT adj
RF adj
FM ANT
T51
CF52
AU
DI
OG
N
D
NC VCC V
DD
_
3.
3
3.3 V
2.5 V
4
3.3 V 2.5 V
IC 2
2.5 V
NC
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 1 6 4 17
IC 1
3.3 V
AM ANT
FMRF
ATT
LPF
OSC
IC 3 EEPROM
5.0 V
IC 5
5 V 3.3 V
←
ATT
MIXER, IF AMP
DET, FM MPX
24
23
Rch
Lch
-
FM/AM Tuner Unit (UC)